JP2002112015A - Image reader, image reading method, and medium providing processing program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image reader which has a function to read both sides of a double-sided original with a color image information on one side, is compact in size and can process reading in high speed, and can provide a read image that is easy-to-handle on a software because the resolution of a sheet material double-side images in the main scanning direction is equal to that thereof in the sub scanning direction. SOLUTION: This image reader is provided with a first reading means on the order of line to successively read a color image information on one side of a sheet material, a second reading means to read a monochrome image information on the other side thereof, an image coupling means to couple the image information of the first reading means with the image information of the second reading means, and an image thinning means to thin out the image information of the second reading means among the image information of the image coupled data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reading apparatus for reading both sides of a document image.

[0002]

2. Description of the Related Art In recent years, manuscripts used in offices and the like are:
The number of color printing is increasing, and the number of originals is also double-sided due to energy saving. Also,
At present, many documents, such as bills, checks, and delivery slips, are printed on one side in color and the other side in black and white.

Conventionally, a color image reading apparatus (first type) in which these sheet-shaped print originals are continuously conveyed and both sides of the originals are read as a color image by a pair of image reading sensors provided oppositely on the conveyance path. Is known.

However, when reading an original on which only one side is color-printed, the first conventional reading apparatus described above employs:
It is necessary to read both sides as a color image and perform image processing, and the image information on the back side, which originally has only black-and-white image information, is processed as color image information.

In order to avoid this drawback, it is conceivable to independently perform image processing on one side as color image information and on the other side as black and white image information. Image processing circuit is required,
The scale of the image processing circuit increases, which causes a cost increase.

Therefore, in order to solve these problems,
An image reading apparatus (second conventional reading apparatus) capable of processing image information on both sides of a document image as one-line image information at a high speed using a simple image processing circuit,
Proposed.

In this image reading apparatus, for example, when reading an original having color image information on the front side and black and white image information on the back side, the color image information on the front side is converted into R (red), G (green), and B (blue). Line-sequential reading for each color component,
This is connected to the black-and-white image information on the back side to make new one-line image information (see FIG. 3). Since the image processing circuit processes the front and back images as one line, the image processing circuit can have a compact circuit configuration.

[0008]

However, the second conventional reading apparatus has the following problems when processing the front and back sides of a document in which only one side has color image information.

(1) The color image information on the surface is R, G,
Since the image is output line-sequentially for each color component of B, three lines of image information are required to return to the original image. In other words, the resolution of the back monochrome image in the document transport direction (sub-scan) is three times the resolution of the front color image. In order to process both sides of the document as one line, it is preferable that the resolutions in the sensor directions (main scanning) on the front and back sides are the same, but the resolutions in the sub-scanning direction of the front and back images are different as described above. In this case, at least one of the front and back image information becomes image data having different resolutions in the main scanning direction and the sub-scanning direction.

(2) In general, it is preferable that color image information is processed so that color change is smooth, and black and white image information is processed so that characters and the like can be clearly read. Optimal image processing cannot be performed for each characteristic of information.

In view of the above-mentioned conventional problems, the present invention has a function of reading the front and back of a double-sided document having color image information on one side, is compact and capable of high-speed reading processing, and is capable of main scanning of a sheet material double-sided image. It is an object of the present invention to provide an image reading apparatus or the like capable of obtaining a read image having the same resolution in the scanning direction and the sub-scanning direction and easy to handle on software or the like.

Further, an image reading apparatus and the like which can perform image processing suitable for image information on both sides of a sheet material by enabling image processing of front image information and back image information independently of each other is provided. The purpose is to:

[0013]

In order to achieve the above object, an image reading apparatus according to the first aspect of the present invention comprises a first reading means for reading color image information on one side of a sheet material in a line-sequential manner; A second reading unit that reads black and white image information on the other side of the sheet material, an image connection unit that connects image information from the first reading unit and image information from the second reading unit, And an image thinning unit for thinning out the image information from the second reading unit out of the image information from the image connecting unit.

According to a second aspect of the present invention, in the image reading apparatus according to the first aspect, the image connecting means includes a one-line image information from the first reading means and the second line. A new line of image information is generated by connecting one line of image information from the reading unit.

According to a third aspect of the present invention, in the image reading apparatus according to the first or second aspect,
The image thinning means thins out image information from the second reading means line by line.

According to a fourth aspect of the present invention, there is provided an image reading apparatus comprising: a first reading means for reading color image information on one side of a sheet material in a line-sequential manner; and a first reading means for reading monochrome image information on the other side of the sheet material. A second reading unit, an image connecting unit for connecting the image information from the first reading unit and the image information from the second reading unit, and the image information from the image connecting unit. First image processing means for performing image processing of image information from the reading means, and second image processing for performing image processing of image information from the second reading means among image information from the image connection means Means.

According to a fifth aspect of the present invention, in the image reading apparatus of the fourth aspect, the first image processing means and the second image processing means each include the first reading means and the first image processing means. It has a function of converting at least the resolution of the image information from the second reading means, and the resolutions set in the first image processing means and the second image processing means can be independently set. It is characterized by having done.

According to a sixth aspect of the present invention, there is provided the image reading apparatus according to the fourth or fifth aspect, further comprising an image thinning section for thinning image information from the second image processing section. Features.

According to a seventh aspect of the present invention, in the image reading apparatus according to any one of the fourth to sixth aspects, the image connecting means is provided with a signal from the first reading means.
The image information of a line and the image information of one line from the second reading unit are connected to generate new one-line image information.

In the image reading apparatus according to the present invention, in the image reading apparatus according to the sixth or seventh aspect,
The image thinning means thins out image information from the second reading means line by line.

According to a ninth aspect of the present invention, in the image reading method, a first reading step of reading color image information of one side of the sheet material in a line-sequential manner, and a first reading step of reading monochrome image information of the other side of the sheet material. 2, an image connection process for connecting the image information from the first reading process and the image information from the second reading process, and the image information from the image connection process. And performing an image thinning process of thinning image information from the reading process.

According to a tenth aspect of the present invention, in the image reading method according to the ninth aspect, the image connecting step includes the step of connecting one line of image information from the first reading step to the second line. A new line of image information is generated by connecting one line of image information from the reading process.

According to an eleventh aspect of the present invention, in the image reading method of the ninth or tenth aspect, the image thinning-out step thins out image information from the second reading step in line units. It is characterized by the following.

According to a twelfth aspect of the present invention, in the image reading method, a first reading step of reading color image information of one side of the sheet material in a line-sequential manner and a black and white image information of reading the other one side of the sheet material are performed. 2, the image information from the first reading process and the image information from the second reading process, and the image information from the image connecting process. A first image processing step of performing image processing of image information from the reading step, and a second image processing of performing image processing of image information from the second reading step among image information from the image connection step And performing the steps.

According to a thirteenth aspect of the present invention, in the image reading method of the twelfth aspect, the first image processing step and the second image processing step each include the first reading step. And the image information obtained in the second reading step, at least the resolution can be converted, and the resolutions set in the first image processing step and the second image processing step can be set independently. It is characterized by having done.

According to a fourteenth aspect of the present invention, there is provided the image reading method according to the twelfth or thirteenth aspect, further comprising an image thinning step for thinning image information from the second image processing step. Features.

According to a fifteenth aspect of the present invention, in the image reading method of the twelfth to fourteenth aspects, the image connecting step includes the step of connecting one line of image information from the first reading step with the image information of one line. A new line of image information is generated by connecting one line of image information from the second reading process.

In the image reading method according to a sixteenth aspect of the present invention, in the image reading method according to the fourteenth or fifteenth aspect, the image thinning step thins out image information from the second reading step in line units. It is characterized by the following.

According to a seventeenth aspect of the present invention, there is provided a medium for providing a processing program, wherein first reading means for reading color image information on one side of a sheet material in a line-sequential manner, and monochrome image information on the other side of the sheet material. The second reading unit for reading the image data, the one line image information from the first reading unit and the one line image information from the second reading unit are connected, and the new one line image information is connected. A medium for providing a processing program for realizing a processing method of an image reading apparatus having an image connection unit for generating, wherein the processing program is configured to output the second one of image information from the image connection unit. An image thinning step of thinning image information from the reading means is provided.

[0030] In the medium for providing a processing program according to the invention of claim 18, in the medium for providing a processing program according to claim 17, the image thinning step includes the step of converting the image information from the second reading unit into lines. It is characterized in that it is thinned out.

According to a nineteenth aspect of the present invention, there is provided a medium for providing a processing program, wherein first reading means for reading color image information on one side of a sheet material in a line-sequential manner, and monochrome image information on the other side of the sheet material. The second reading unit for reading the image data, the one line image information from the first reading unit and the one line image information from the second reading unit are connected, and the new one line image information is connected. A medium for providing a processing program for realizing a processing method of an image reading apparatus having an image connection unit for generating, wherein the processing program includes, among image information from the image connection unit, the first A first image processing step of performing image processing of image information from a reading unit, and a second image performing image processing of image information from the second reading unit among image information from the image connection unit. Characterized by comprising a management step.

In the medium for providing a processing program according to the present invention, the first image processing step and the second image processing step may each include: It has a function of converting at least the resolution of the image information from the first reading unit and the second reading unit, and sets the resolution to be set in the first image processing step and the second image processing step. , Each of which can be set independently.

According to a twenty-first aspect of the present invention, there is provided a medium for providing a processing program according to the nineteenth or twentieth aspect. An image thinning step for thinning image information is provided.

In the medium for providing a processing program according to the present invention, in the medium for providing a processing program according to the twenty-first aspect, the image thinning step may include a step of converting image information from the second reading means into a line. It is characterized by thinning out in units.

[0035]

Embodiments of the present invention will be described below with reference to the drawings.

[First Embodiment] FIG. 1 is a block diagram showing a schematic configuration of an image reading apparatus according to a first embodiment of the present invention.

In the present embodiment, the front side of the document is described as color image information, and the back side is described as black and white image information.
The same applies to the third and third embodiments.)

Reference numerals 11a and 11b in FIG. 1 denote light sources for irradiating the original. The light source 11a has R, G, and B light sources for reading image information on the front side of the document as color image information, and switches a light source color to be turned on every time the reading sensor 12a reads one line of image information. Is available. Reading sensors 12a, 12b
Are line sensors for reading image information on the front and back surfaces of the document, respectively.

Reference numeral 13 denotes a synthesizing circuit which connects the image information on both sides to generate new one-line image information. Reference numeral 14 denotes an image processing circuit that processes image information on a line-by-line basis.
Edge enhancement or the like is performed. Reference numeral 15 denotes a back image thinning means, which has a function of thinning only the back image information out of one line of image information.

The original includes a light source 11a and a reading sensor 1.
2a, the light source 11b and the reading sensor 12b are continuously conveyed, and are read by the reading sensors 12a and 12b in line units. As shown in FIG. 2, the image information from the synthesizing circuit 13 is a new
Image processing is performed by the image processing circuit 14 as a scanning line.

As described above, the image processing circuit 14 has a compact circuit configuration for processing both front and back images as one line.

The image information processed by the image processing circuit 14 in FIG. 1 is continuous image information as shown in FIG. 3, and the image information on the original surface is line-sequential color image information. Image information becomes image information of three lines of R, G, and B.

Here, in order to obtain an image of 100 dpi in both the main scanning and the sub-scanning of the front color image, three times 300 d is required.
The document is conveyed at a speed of pi. However, since the image data of the back image which is reading the image at the same time is 300 dpi according to the conveyance speed, the reproduced image information of both sides of the document is only in the sub-scanning direction of the back image as shown in FIG. Becomes image information of 300 dpi.

In general, in software that handles image information, the main scanning resolution and the sub-scanning resolution need to be equal. From this point, in this embodiment, only the back image information after image processing by the image processing circuit 14 is used as the back image. The thinning-out means 15 is used to thin out. The thinning function of the back image thinning means 15 in the present embodiment is, for example, deleting image information of two lines out of three lines into one-third image information. With this thinning-out function, it is possible to obtain image information as shown in FIG. 5, and as shown in FIG. Obtainable.

Although the thinning function of the present embodiment deletes the image information of two lines out of three lines, the image information is reduced to one third. The average value of the pixels is used (for example, each pixel 3
A method of calculating the average value of the lines, or changing the line used for each pixel (for example, when R (red) of the front image, pixel information of the first, fourth, seventh,...
When the front image is G (green), the back image is 2, 5, 8, ...
(Use the image information of the pixel, use the image information of the 3, 6, 9, ... pixel of the back image when B (blue) of the front image)
The method is also effective.

[Second Embodiment] FIG. 6 is a block diagram showing a schematic configuration of an image reading apparatus according to a second embodiment of the present invention. Elements common to FIG. 1 are denoted by the same reference numerals. I have.

The structure of this image reading apparatus is different from that of the first embodiment in that the front image processing means 21 is provided on the output side of the image processing circuit 14 instead of the back image thinning means 15.
And a back image processing means 22.

The front image processing means 21 has a function of performing image processing of only front image information in one line of image information.
Similarly, the back image processing unit 22 has a function of performing image processing of only the back image information among the image information of one line. Further, the front image processing means 21 and the back image processing means 22 have a function of converting the resolution, and the value of each resolution can be set independently.

As described in the first embodiment, the sub-scanning resolution of the front color image information is 1/3 of the back image information. Assuming that the reading sensors 12a and 12b are 3
Use a 00 dpi line sensor and set the document transport speed to 3
When the resolution is set to 00 dpi, the image information output from the image processing circuit 14 is 100 dpi image information only in the sub-scanning resolution of the front color image as shown in FIG.

As described above, it is preferable that the resolution of the main scanning and the sub-scanning of the image information is equal. In order to realize this, in the present embodiment, the image information from the image processing circuit 14 is processed by the front image processing. The resolution of the main scanning is converted to 100 dpi using the means 21. As a result, image information as shown in FIG. 8 is obtained. As shown in FIG. 7B, the resolutions of the main scanning and the sub-scanning are both equal, and the front color image is 100 dpi and the back image is 300 dpi. Can be obtained.

In this embodiment, the front image processing means 2
Since the front image and the back image can be independently processed by the first and back image processing means 22, image processing suitable for the image information on both the front and back surfaces can be performed.

[Third Embodiment] In the third embodiment,
The configuration is such that the first and second embodiments are performed simultaneously.

FIG. 9 is a block diagram showing a schematic configuration of an image reading apparatus according to a third embodiment of the present invention. Elements common to those in FIGS. 1 and 6 are denoted by the same reference numerals.

The configuration of the image reading apparatus is the same as that of the second embodiment except that the back image thinning means 15 used in the first embodiment is connected to the output side of the back image processing means 22.

In this embodiment, the reading sensor 12a,
A case will be described in which a line sensor having a resolution of 300 dpi is used as 12b to obtain read image information OUT of 200 dpi on both front and back images.

Since the sub-scanning resolution of the front color image is determined by the conveying speed of the original, the original is conveyed at a speed of 600 dpi of 200 dpi × 3 in this case.
Since the resolution of the main scanning on both sides is determined by the line sensor, the resolution of both the front and back images output from the image processing circuit 14 is 300 dpi for the main scanning (FIG. 10).
(A)). Therefore, the main scanning resolution is converted to 200 dpi using the front image processing unit 21 and the back image processing unit 22.

Further, the sub-scanning resolution of the back image is 60
Since it is 0 dpi (see FIG. 10B), the image information for one-third line is converted to 200 dpi using the back image thinning means 15.

As a result, as shown in FIG. 10C, the image information on both the front and back sides becomes read image information OUT of 200 dpi equally in both the main scanning and the sub-scanning.

The present invention is not limited to the apparatus of the above-described embodiment, but may be applied to a system including a plurality of devices or an apparatus including one device.
A storage medium storing program codes of software for realizing the functions of the above-described embodiments is supplied to a system or an apparatus, and a computer (or CPU or MPU) of the system or apparatus reads out and executes the program code stored in the storage medium. It goes without saying that it will be completed by doing so.

In this case, the program code itself read from the storage medium implements the functions of the above-described embodiment, and the storage medium storing the program code constitutes the present invention. As a storage medium for supplying the program code, for example, a floppy (registered trademark) disk, a hard disk, an optical disk,
A magneto-optical disk, a CD-ROM, a CD-R, a magnetic tape, a nonvolatile memory card, and a ROM can be used. When the computer executes the readout program code, not only the functions of the above-described embodiments are realized, but also the OS or the like running on the computer performs the actual processing based on the instruction of the program code. It goes without saying that a case where some or all of the operations are performed and the functions of the above-described embodiments are realized by the processing is also included.

Further, after the program code read from the storage medium is written into a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, the program code is read based on the next program code. Needless to say, the extended function may be performed by a CPU or the like provided in an expansion board or an expansion unit to perform a part or all of the actual processing, and the processing may realize the functions of the above-described embodiments. No.

[0062]

As described above in detail, in the image reading apparatus according to the first aspect of the present invention, the first reading means for reading the color image information on one side of the sheet material line-sequentially, and the other of the sheet material. Second reading means for reading one-sided black and white image information, image connecting means for connecting image information from the first reading means and image information from the second reading means, and image information from the image connecting means. And the image reading means for thinning out the image information from the second reading means, so that the resolution in the sub-scanning direction of the sheet material double-sided image is made the same by thinning out the black and white image information from the second reading means. be able to. As a result, it is possible to obtain a read image in which the resolution of the sheet material double-sided image in the main scanning direction and the resolution in the sub-scanning direction are equal and easy to handle on software or the like.

In the image reading apparatus according to the second aspect of the present invention, the image connecting means connects one line of image information from the first reading means to one line of image information from the second reading means. Therefore, since a new line of image information is generated, it is possible to realize a compact image reading apparatus capable of high-speed reading processing.

In the image reading apparatus according to the third aspect of the present invention, the image thinning means thins out the image information from the second reading means line by line, so that it is simple and accurate as in the first aspect of the present invention. It works.

In the image reading apparatus according to the present invention, the first reading means for reading the color image information on one side of the sheet material in a line-sequential manner, and the second reading means for reading the monochrome image information on the other side of the sheet material. Reading means, image connecting means for connecting image information from the first reading means and image information from the second reading means, and image information from the image connecting means.
First image processing means for performing image processing of image information from the first reading means, and image information from the image connection means,
A second image processing means for performing image processing of the image information from the second reading means, so that the image information from the first and second reading means can be independently image-processed; It is possible to perform image processing suitable for this image information.

In the image reading apparatus according to the fifth aspect of the present invention, the first image processing means and the second image processing means are adapted to process image information from the first reading means and the second reading means, respectively. Has at least the function of converting the resolution, and the resolutions set in the first image processing means and the second image processing means can be independently set, so that the resolutions from the first and second reading means can be set. Since the main scanning resolution of the image information can be set independently, it is possible to obtain a read image having the same resolution in the main scanning direction and the sub-scanning direction in each image information on both sides of the sheet material.

The image reading apparatus according to the sixth aspect of the present invention has an image thinning means for thinning out image information from the second image processing means. The same effect as that of the fifth aspect is obtained.

In the image reading apparatus according to the present invention, the image connecting means connects one line of image information from the first reading means to one line of image information from the second reading means. Thus, since new one-line image information is generated, the same effect as that of the second aspect of the invention can be obtained.

In the image reading apparatus according to the eighth aspect of the present invention, the image thinning means thins out the image information from the second reading means line by line. It works.

In the image reading method according to the ninth aspect of the present invention, the first reading step for reading the color image information on one side of the sheet material in a line-sequential manner, and the second reading process for reading the monochrome image information on the other side of the sheet material. Among the reading process, the image connecting process for connecting the image information from the first reading process and the image information from the second reading process, and the image information from the image connecting process.
Since the image thinning step of thinning out the image information from the second reading step is executed, the same effect as the first aspect of the present invention can be obtained.

In the image reading method according to the present invention, the image connecting step connects one line of image information from the first reading step and one line of image information from the second reading step. Thus, since new one-line image information is generated, the same effect as that of the second aspect of the invention can be obtained.

In the image reading method according to the eleventh aspect, in the image thinning-out step, the image information from the second reading step is thinned out in units of lines, so that the same effect as that of the third aspect is obtained.

In the image reading method according to the twelfth aspect of the present invention, the first reading step for reading the color image information on one side of the sheet material in a line-sequential manner and the second reading process for reading the monochrome image information on the other side of the sheet material. , An image connecting step for connecting the image information from the first reading step and the image information from the second reading step, and an image from the first reading step among the image information from the image connecting step. Since a first image processing step of performing image processing of information and a second image processing step of performing image processing of image information from a second reading step among image information from the image connection step are performed, The same effect as the fourth aspect of the invention can be obtained.

In the image reading method according to the thirteenth aspect, the first image processing step and the second image processing step include:
At least the resolution of the image information obtained in the first reading process and the image information obtained in the second reading process can be converted, and the resolution set in the first image processing process and the resolution set in the second image processing process, respectively. Since the setting can be made independently, an effect similar to that of the fifth aspect of the invention can be obtained.

The image reading method according to the fourteenth aspect of the present invention has the same effect as that of the sixth aspect of the present invention because it has an image thinning-out step of thinning out image information from the second image processing step.

In the image reading method according to the present invention, the image connecting step connects one line of image information from the first reading step and one line of image information from the second reading step. Thus, since new one-line image information is generated, the same effect as that of the seventh aspect of the invention can be obtained.

In the image reading method according to the sixteenth aspect of the present invention, in the image thinning-out step, the image information from the second reading step is thinned out in units of lines, so that the same effect as that of the eighth aspect is obtained.

According to a seventeenth aspect of the present invention, in a medium for providing a processing program, the processing program includes an image thinning step of thinning out image information from the second reading means among image information from the image connecting means. Therefore, the same effect as the first aspect of the invention can be obtained.

In the medium for providing a processing program according to the present invention, the image thinning step thins out the image information from the second reading means in units of lines. To play.

In the medium for providing a processing program according to the present invention, the processing program executes the first image processing of the image information from the first reading means out of the image information from the image connecting means. The image processing apparatus further includes an image processing step and a second image processing step of performing image processing of image information from the second reading unit out of the image information from the image connection unit. It works.

In a medium for providing a processing program according to the present invention, the first image processing step and the second image processing step each include an image information from the first reading unit and the second reading unit. 6. The image processing apparatus according to claim 5, further comprising a function of converting at least the resolution, and independently setting the resolutions to be set in the first image processing step and the second image processing step.
The same effect as that of the invention is achieved.

In the medium for providing a processing program according to the present invention, the processing program has an image thinning step for thinning image information from the second image processing step. Has the effect of

In the medium for providing a processing program according to the present invention, the image thinning step thins out the image information from the second reading means in units of lines. To play.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a schematic configuration of an image reading apparatus according to a first embodiment of the present invention.

FIG. 2 is a diagram illustrating image information output from a synthesis circuit.

FIG. 3 is a diagram illustrating output image information of the image processing circuit according to the first embodiment.

FIG. 4 is a diagram illustrating output image information of an image processing circuit and a back image thinning unit according to the first embodiment.

FIG. 5 is a diagram showing image information obtained by a thinning function.

FIG. 6 is a block diagram illustrating a schematic configuration of an image reading apparatus according to a second embodiment of the present invention.

FIG. 7 is a diagram illustrating each output image information of an image processing circuit and a back image processing unit according to a second embodiment.

FIG. 8 is a diagram showing output image information of a front image processing unit according to a second embodiment.

FIG. 9 is a block diagram illustrating a schematic configuration of an image reading apparatus according to a third embodiment of the present invention.

FIG. 10 is a diagram illustrating output image information of an image processing circuit, a back image processing unit, and a back image thinning unit according to a third embodiment.

[Explanation of symbols]

 11a, 11b Light source 12a, 12b Reading sensor 13 Synthesis circuit 14 Image processing circuit 15 Back image thinning means 21 Front image processing means 22 Back image processing means

Claims (22)

[Claims] A first reading unit that reads color image information on one side of a sheet material in a line-sequential manner; a second reading unit that reads black and white image information on the other side of the sheet material; Image connection means for connecting image information from the means and image information from the second reading means, and image thinning means for thinning out image information from the second reading means among image information from the image connection means. An image reading apparatus comprising: 2. The image connection unit connects one line of image information from the first reading unit and one line of image information from the second reading unit to form a new one-line image. The image reading device according to claim 1, wherein the information is generated. 3. An image reading apparatus according to claim 1, wherein said image thinning means thins image information from said second reading means in line units. 4. A first reading means for reading color image information on one side of a sheet material in a line-sequential manner; a second reading means for reading black and white image information on the other side of the sheet material; Image connecting means for connecting the image information from the means and the image information from the second reading means; and performing image processing of the image information from the first reading means among the image information from the image connecting means. An image comprising: a first image processing unit; and a second image processing unit that performs image processing of image information from the second reading unit out of image information from the image connection unit. Reader. 5. A function of the first image processing means and the second image processing means for converting at least resolution of image information from the first reading means and the second reading means, respectively. 5. The image reading apparatus according to claim 4, wherein the resolution set for the first image processing unit and the resolution set for the second image processing unit can be set independently. 6. The image reading apparatus according to claim 4, further comprising image thinning means for thinning image information from said second image processing means. 7. The image connecting means connects one line of image information from the first reading means and one line of image information from the second reading means to form a new one line image. The image reading apparatus according to claim 4, wherein information is generated. 8. The image reading apparatus according to claim 6, wherein said image thinning means thins image information from said second reading means in line units. 9. A first reading step for reading color image information on one side of a sheet material in a line-sequential manner, a second reading step for reading monochrome image information on the other side of the sheet material, and the first reading. An image connecting step of connecting image information from the second reading step and image information from the second reading step; and an image thinning step of thinning out image information from the second reading step among image information from the image connecting step. And an image reading method. 10. The image connection step connects one line of image information from the first reading step and one line of image information from the second reading step to form a new one line image. The image reading method according to claim 9, wherein information is generated. 11. The image reading method according to claim 9, wherein in the image thinning step, the image information from the second reading step is thinned for each line. 12. A first reading step for reading color image information on one side of a sheet material in a line-sequential manner, a second reading step for reading black and white image information on the other side of the sheet material, and the first reading. An image connection process for connecting the image information from the second reading process and the image information from the second reading process; and performing image processing of the image information from the first reading process out of the image information from the image connecting process. An image, comprising: executing a first image processing step; and a second image processing step of performing image processing of image information from the second reading step among image information from the image connection step. Reading method. 13. The first image processing step and the second image processing step.
The image processing step is performed on the image information obtained in the first reading step and the image information obtained in the second reading step, respectively.
13. The image reading method according to claim 12, wherein at least the resolution can be converted, and the resolutions set in the first image processing step and the second image processing step can be set independently. 14. The image reading method according to claim 12, further comprising an image thinning step for thinning out image information from the second image processing step. 15. The image connecting step connects one line of image information from the first reading step and one line of image information from the second reading step to form a new one line image. 15. The image reading method according to claim 12, wherein information is generated. 16. The image reading method according to claim 14, wherein in the image thinning step, the image information from the second reading step is thinned in line units. 17. A first reading means for reading color image information on one side of a sheet material in a line-sequential manner, a second reading means for reading monochrome image information on the other side of the sheet material, and the first reading. One line of image information from the means and the second
Providing a processing program for realizing a processing method of an image reading apparatus having an image connecting means for connecting one line of image information from one of the reading means and generating new one line of image information A medium for providing a processing program, comprising: an image thinning step of thinning out image information from the second reading unit out of image information from the image connecting unit. 18. The image thinning step according to claim 18, wherein
18. A medium for providing a processing program according to claim 17, wherein image information from said reading means is thinned out in line units. 19. A first reading means for reading color image information on one side of a sheet material line-sequentially, a second reading means for reading monochrome image information on the other side of the sheet material, and the first reading means One line of image information from the means and the second
Providing a processing program for realizing a processing method of an image reading apparatus having an image connecting means for connecting one line of image information from one of the reading means and generating new one line of image information Wherein the processing program comprises: a first image processing step of performing image processing of image information from the first reading unit, among image information from the image connecting unit; and an image from the image connecting unit. A second image processing step of performing image processing of image information from the second reading unit out of the information. 20. The first image processing step and the second image processing step each include a function of converting at least resolution of image information from the first reading unit and the second reading unit. 20. The medium for providing a processing program according to claim 19, wherein the resolution set in the first image processing step and the second image processing step can be independently set. 21. A medium for providing a processing program according to claim 19, wherein said processing program has an image thinning step of thinning image information from said second image processing step. 22. The image thinning-out step, wherein:
22. A medium for providing a processing program according to claim 21, wherein image information from said reading means is thinned out in line units.