JP5419783B2 - Image reproducing apparatus and method for controlling image reproducing apparatus - Google Patents

Description

  The present invention relates to a resizing process of an image playback device incorporated in a mobile phone, a digital camera, or the like.

  2. Description of the Related Art Conventionally, there are devices that reproduce still images such as digital still cameras, digital video cameras, mobile phones, personal computers, and the like. Some of these devices not only display the entire still image on a display device such as a liquid crystal panel or a monitor, but also have a function of displaying a part of the enlarged image. In recent years, with the increase in the number of pixels of image sensors mounted on digital still cameras, digital video cameras, and mobile phones, the number of pixels of still images to be stored is also increasing. Although the image quality is improved by increasing the number of pixels, it takes time to decode the compressed data due to the increased amount of data and to perform the resizing process from the number of pixels of the still image to the resolution of the display device. It takes. While the image quality has improved, the responsiveness to operations has been impaired.

  For such a problem, when decoding compressed image data, the first resolution image data depending on the resolution of the display device and the second resolution image data higher than the first resolution. There is an approach that uses image data of the second resolution when image data of two types of resolution is developed in a memory and a part of the image is enlarged and displayed (for example, Patent Document 1).

JP 2005-223765 A

  However, in the method of Patent Document 1, image data with two types of resolution is only selectively used by a user operation (frame advance, frame return, enlargement / reduction, scroll, rotation). When the user performs an enlargement / reduction operation, the image data is extracted from the second resolution image data having a high resolution and resized to the resolution of the display device. However, the process takes time due to the recent increase in the number of pixels of the still image. End up. In particular, when a continuous resize request (for example, a continuous zoom operation) occurs, it becomes prominent, and when viewed on the screen of the display device, the operation does not catch up with the operation, and the image reproduction is not performed smoothly. .

  In view of such a problem, the present invention provides an image reproducing apparatus and an image that can maintain responsiveness to an operation even when a user performs a zoom operation, particularly when a continuous zoom operation is performed and resize requests are continuously generated. A method for controlling a playback apparatus is provided.

  In order to solve the above-described problems, an image reproducing apparatus provided by the present invention includes a reading unit that reads an image, a resizing unit that resizes an image read by the reading unit, and an image resized by the resizing unit. Display control means for displaying on the display unit, and when the processing time required for the resizing means to resize the image to the size of the display unit is longer than a predetermined time, the processing time is reduced to a size that is shorter than the predetermined time. A generating unit configured to generate an image resized from the image; and a storing unit configured to store the image generated by the generating unit, wherein the display control unit is stored in the storing unit and the display unit includes the display unit. The resized image is displayed on the display unit.

  The image reproduction apparatus provided by the present invention includes a reading unit that reads an image, a resizing unit that resizes the image read by the reading unit, and a display control that displays the image resized by the resizing unit on a display unit. Means for determining whether the processing time required for the resizing means to resize the image to the size of the display unit is longer than a predetermined time, and the processing time is longer than the predetermined time by the determining means And generating means for generating an image obtained by resizing the image so that the processing time is shorter than the predetermined time.

  The image reproduction apparatus provided by the present invention includes a reading unit that reads an image, a resizing unit that resizes the image read by the reading unit, and a display control that displays the image resized by the resizing unit on a display unit. Means for determining whether or not the size of the image read by the reading means is larger than a predetermined size, and when the determination means determines that the image size is larger than the predetermined size, And generating means for generating an image obtained by resizing the image to a small size.

  According to the present invention, when a user performs a zoom operation, responsiveness to the operation can be maintained even when a continuous zoom operation is performed and resize requests are continuously generated.

FIG. 2 is a hardware configuration diagram of an image reproduction device according to the present invention. It is a figure when displaying a still picture on the display concerning the present invention. It is a block diagram of the system control part which the image reproduction apparatus in Embodiment 1 of this invention has. 1 is a configuration diagram of a memory included in an image reproduction device according to the present invention. FIG. It is a flowchart showing the flow of the whole process which concerns on this invention. 4 is a flowchart showing image reading processing according to the first embodiment of the present invention. 5 is a flowchart of processing for resizing an image by a user operation in Embodiment 1 of the present invention. It is a block diagram of the system control part which the image reproduction apparatus in Embodiment 2 of this invention has. It is a flowchart showing the reading process of the image in Embodiment 2 of this invention. It is a block diagram of the system control part which the image reproduction apparatus in Embodiment 3 of this invention has. 10 is a flowchart of processing for resizing an image by a user operation in Embodiment 3 of the present invention.

(Embodiment 1)
FIG. 1 shows an example of a hardware configuration of an image playback apparatus 100 to which each embodiment of the present invention can be applied.

  In FIG. 1, a system control unit 101, a hard disk (HD) 102, a memory 103, a display control unit 104, an input unit 105, a drive device 106, a communication I / F 107, a resize processing unit 109, and an image decoding unit are connected to the internal bus 111. 112 is connected. Each unit connected to the internal bus 111 can exchange data with each other via the internal bus 111.

  The hard disk 102 stores image data, other data, various programs for operating the system control unit 101, and the like. This program is a program for causing a computer to execute processing of each flowchart described later. The memory 103 is composed of a RAM, for example. The system control unit 101 controls each unit of the image reproduction apparatus 100 using the memory 103 as a work memory, for example, according to a program stored in the hard disk 102. In this embodiment, the computer is caused to function as each processing unit in FIG. 3 to be described later by executing a program. However, a part or all of each processing unit in FIG. You may comprise. The program for operating the system control unit 101 is not limited to being stored in the hard disk 102, and may be stored in advance in a ROM (not shown), for example.

  The input unit 105 receives a user operation, generates a control signal corresponding to the operation, and supplies the control signal to the system control unit 101. For example, the input unit 105 includes character information input devices such as a keyboard and pointing devices such as a mouse and a touch panel as input devices that accept user operations. The touch panel is an input device that outputs coordinate information according to a position touched with respect to, for example, a planar input unit. The system control unit 101 controls each unit of the image reproduction apparatus 100 according to a program based on a control signal generated and supplied by the input unit 105 in response to a user operation performed on the input device. Thereby, it is possible to cause the image reproduction apparatus 100 to perform an operation according to the user operation.

  The display control unit 104 outputs a display signal for displaying an image on the display 110. For example, the image data generated by the system control unit 101 in accordance with the program is stored in the memory 103 for the display control unit 104. The display control unit 104 generates a display signal based on the image data stored in the memory 103 and outputs the display signal to the display 110. In FIG. 1, the display 110 exists inside the image reproduction apparatus 100, but the present invention can be implemented even if the display 110 exists outside.

  When a touch panel is used as the input unit 105, the input unit 105 and the display 110 can be integrally configured. For example, the touch panel is configured such that the light transmittance does not hinder the display of the display 110 and is attached to the upper layer of the display surface of the display 110. Then, the input coordinates on the touch panel are associated with the display coordinates on the display 110. The system control unit 101 can monitor input coordinates on the touch panel at predetermined time intervals and acquire information (speed, acceleration, etc.) according to the input coordinates and the amount of change in the input coordinates. Thereby, it is possible to configure a user interface as if the user can directly operate the screen displayed on the display 110.

  The drive device 106 can be loaded with an external storage medium 108 such as a CD or a DVD. Under the control of the system control unit 101, the drive device 106 reads data from the loaded external storage medium 108 and reads data from the external storage medium 108. Write. The external storage medium 108 to which the drive device 106 can be attached is not limited to a disk recording medium such as a CD or a DVD, and a non-volatile semiconductor memory such as a memory card may be attached to the drive device 106, for example. A communication interface (I / F) 107 performs communication with the network 120 such as a LAN or the Internet by the system control unit 101.

  The resizing processing unit 109 reads image data stored in a recording unit such as the HD 102, the memory 103, the external storage medium 108, converts the resolution of the read image, and writes the converted image in any recording unit. Can do. An input image to the resize processing unit 109 can specify an arbitrary area of the read image. The resolution of the input image and the output image is controlled by the system control unit 101. Although dedicated hardware is assumed here, the system control unit 101 may perform resizing in software. For resizing performed by the resizing processing unit 109, a known technique, for example, a Bi-Cubic method is used.

  The image decoding unit 112 decodes an image file encoded and stored in a predetermined format in the HD 102, the memory 103, the external storage medium 108, and the like. The decoded image data is converted into a format that can be handled by the resizing processing unit 109 and the display control unit 104, for example, YCC (4: 2: 2) image data, and written into the memory 103.

  Next, a description will be given of still image reproduction in the present embodiment with reference to FIG. In FIG. 2, 201 indicates decoded image data stored in the memory 103 or the like, and 202 indicates an area to which the resizing processing unit 109 refers. The system control unit 101 acquires an entry of a file stored in the HD 102, the external recording medium 108, or the like. The system control unit 101 causes the display 110 to display a list of file names in which images are stored among the acquired file entries. Here, instead of displaying the list of file names, the reduced images of each image file may be displayed as a list and selected by the user. The file selected by the user is input to the system control unit 101 by the input unit 105. Based on the input contents, the system control unit 101 stores the files in the HD 102, the external recording medium 108, and the like in the memory 103. The data stored in the memory 103 is decoded by the image decoding unit 112 and stored in the memory 103. The decoded image data 201 is resized to a predetermined size by the resize processing unit 109 and displayed on the display 110 by the system control unit 101. At this time, if there is no zooming operation by the user, the resizing processing unit 109 performs resizing to the resolution of the display 110 so that the entire area of the decoded image data can be confirmed (see FIG. 2A).

  Note that the size of the decoded image data 201 may be larger or smaller than the resolution of the display 110. When it is larger than the resolution of the display 110, it is resized (reduced) so as to have the same resolution as that of the display 110. When it is smaller than the resolution of the display 110, it is resized (enlarged) so that it becomes the same resolution as that of the display 110. Is done. In each process described later, resizing is possible regardless of the size of the decoded image data 201.

  In addition, various displays such as a digital video camera, a TV, and a PC display are assumed as the display 110. The display control unit 104 determines the resolution of the display 110 included in or connected to the image playback apparatus 100. It may be acquired in advance and stored in the memory 103 or the like.

  Next, an operation when a zoom operation is performed on an image displayed on the display 110 by the user will be described. When the user performs a zoom operation on the image displayed on the input unit 105, the system control unit 101 issues a cutout instruction and a resize instruction to the resize processing unit 109. When the user performs a zoom operation from the input unit 105, the system control unit 101 designates the zoom magnification to the resize processing unit 109 according to the operation. At this time, the zoom magnification is determined based on the entire region of the decoded image data and a partial region 202 of the image data 201 displayed on the display 110 by the zoom operation. The resize processing unit 109 cuts out the area 202, resizes the image data of the cut out area 202 to the resolution of the display 110, and outputs the resized image to the display control unit 104 (see FIG. 2B). If the coordinates of the area to be referred to are not specified, they are automatically calculated inside the resize processing unit 109 so that the center area of the image data 701 is displayed, and the calculated coordinates become the coordinates of the area. Note that the larger the zoom magnification, the smaller the size of the region 202 and the number of pixels referred to the image data 201 decreases. Therefore, the processing for resizing the region 202 to the same resolution as the resolution of the display 110 is performed at higher speed. Yes.

  Further, the user can change the reference position of the region 202 to an arbitrary place by performing a scroll operation using the input unit 105 (see FIG. 2C). When there is a request for changing the position to be referenced from the input unit, the system control unit 105 issues a cutout instruction and a resize instruction to the resize processing unit 109. The resizing processing unit 109 reads the area 202 from the coordinates designated by the user and cuts out the area 202. Then, the clipped area 202 is resized to the resolution of the display 110 and displayed on the display 110.

  Next, the configuration of the system control unit 101 in FIG. 1 in the present embodiment is shown in FIG. The system control unit 101 includes an image size acquisition unit 301, a resize time calculation unit 302, a processing time determination unit 303, and a time measurement unit 304. The image size acquisition unit 301 acquires the size (number of pixels in the vertical and horizontal directions) of the image data decoded by the image decoding unit 112. The resizing time calculation unit 302 calculates the time required for resizing from the size of the input image and output image to be resized, the number of gradations, the data format, and the like. The processing time determination unit 303 determines whether the time required for resizing calculated by the resizing time calculation unit 302 is longer than a predetermined time. The predetermined time is determined by the update cycle of the display unit such as the display 110 or the update cycle of input from the input device such as the input unit 105. The time measuring unit 304 can acquire the time from the start of the image playback device at a predetermined timing. It is possible to obtain a time difference between two timings by measuring the time at two timings and taking the difference. The time measurement unit 304 also determines whether the acquired time difference is longer than a predetermined time.

  Next, FIG. 4 shows the configuration of the memory 103 in FIG. 1 in the present embodiment. The memory is divided into a plurality of areas, and includes an image file storage area 401, a decoded image storage area 402, a resized image storage area 403, and a display image storage area 404. The image file storage area 401 is an area for storing an encoded file. The decoded image storage area 402 and the resized image storage area 403 are areas in which image data is stored in a format that can be handled by the resize processing unit 109. The display image storage area 404 is an area in which image data is stored in a format that can be handled by the resizing processing unit 109 and the display control unit 104. The stored data is displayed on the display 110 by the display control unit 104 at a predetermined timing. In addition, there are areas (not shown) for storing programs executed by the system control unit 101 and areas (not shown) for storing data other than image data.

  Next, an image reproduction method in this embodiment is shown in FIG. The image reproduction method in this embodiment is roughly divided into two steps. As shown in FIG. 5, the process includes a step of writing the read image into the memory 103 (step S501) and a step of resizing the image by a user operation (step S502).

  First, the step of writing the read image into the memory (S501) will be described with reference to the flowchart of FIG.

  First, in step S <b> 601, the system control unit 101 copies an image file in the HD 102 to the image file storage area 401 of the memory 103 in accordance with an instruction from the user to the input unit 105. Here, the HD 102 is taken as an example, but the user can also specify an image file in the external recording medium 108 or a file on the NET 120 through the communication I / F 107. Further, the image file may be automatically copied to the image file storage area 401 of the memory 103 even if there is no instruction from the user to the input unit 105.

  In step S602, the image file copied to the image file storage area 401 is decrypted. The system control unit 101 decodes the image file copied to the image file storage area 401 by the image decoding unit 112 and stores the decoded image file in the decoded image storage area 402 in the memory 103.

  When the image file is decoded in step S602, it is determined whether the processing time required to resize the image stored in the decoded image storage area 402 in step S603 to the same size as the resolution of the display 110 is longer than a predetermined time. To do. First, the image size acquisition unit 301 of the system control unit 101 acquires the size (horizontal and vertical resolution) of the image stored in the decoded image storage area 402. Next, the processing time required to resize the image stored in the decoded image storage area 402 to the resolution of the display 110, the size of the image acquired by the image size acquisition unit 301, the resolution of the display 110, the number of gradations, The resizing time calculation unit 302 calculates the data format. Then, the processing time determination unit 303 determines whether the processing time calculated by the resizing time calculation unit 302 is longer than a predetermined time.

  Note that the predetermined time is an update cycle of the display unit such as the display 110 (for example, the update time of the screen is 1/60 seconds in the case of an NTSC TV display device), or an update cycle of input from the input device such as the input unit 105 Depending on the time is considered. Information regarding these times may be received in advance by the display control unit 104 or the input unit 105 and stored in the memory 103 or the like. When the term “predetermined time” is used in the processing described later, it is synonymous with these terms.

  Subsequently, a process when it is determined in step S603 that the processing time is longer than the predetermined time will be described.

  In step S604, the resize processing unit 109 first resizes the image stored in the decoded image storage area 402 to a size that can be resized to the resolution of the display 110 within a predetermined time. Since the size of an image that can be resized within a predetermined time is determined by the processing capability of the resize processing unit 109, it may be calculated in advance by the system control unit 101 and stored in the memory 103 or the like. Then, the system control unit 101 stores the resized image in the resized image storage area 403.

  If it is determined in step S603 that the processing time is shorter than the predetermined time or the processing time is equal to the predetermined time, the processing in step S501 ends.

  Next, the step of resizing the image by the user's operation (step S502) will be described using the flowchart of FIG.

  First, in step S701, it is determined whether there is an image reproduction end request by a user operation. When there is an image reproduction end request from the input unit 105 to the system control 105 by the user's operation, step S502 is ended and the image reproduction is ended.

  If there is no image end request in step S701, the system control unit 101 determines in step S702 whether the user has performed an image zoom operation or scroll operation from the input unit 105.

  If it is determined in step S702 that the user has performed an image zoom operation or scroll operation from the input unit 105, a process for displaying an area corresponding to the user operation in step S703 as illustrated in FIG. Is done. Based on the information from the input unit 105, the resize processing unit 109 cuts out an area corresponding to the user's operation, that is, the area 202 from the image stored in the resized image storage area 403, and resizes it to the same resolution as that of the display 110. I do. Then, the system control unit 101 stores the resized image in the display image storage area 404 referred to by the display control unit 104.

  At this time, since the image stored in the resized image storage area 403 is an image that can be resized within a predetermined time, when a continuous resize request is generated by the user, that is, when a continuous zoom operation or scroll operation is performed. However, it is possible to maintain responsiveness to operations.

  Next, a process when it is not determined in step S702 that the user has performed an image zoom operation or scroll operation from the input unit 105 will be described.

  First, in step S704, it is determined whether a predetermined time has elapsed since the previous user operation. Here, it is assumed that the fixed time is an arbitrary time that can be determined that there is no user operation, such as 1 second, and is stored in the memory 103 or the like. First, the time measuring unit 304 acquires the elapsed time from the timing when the previous user operation is performed and the timing at which step S702 is processed. Then, the processing time determination unit 303 determines whether or not the elapsed time acquired by the time measurement unit 304 is longer than a predetermined time.

  If it is determined in step S704 that a predetermined time has elapsed since the previous user operation, the previous resize in step S705 is performed based on the image stored in either the decoded image area 402 or the resized image storage area 403. Confirmed that it was done. It is stored in the memory 103 as to whether the resize performed last time was performed from the image stored in the decoded image area 402 or the resized image storage area 403, and the system control unit 101 makes a determination by referring to it. Do. If it is determined that the previous resizing is performed from the image stored in the resized image storage area 403, the process proceeds to step S706.

  In step S706, the area 202 is cut out from the image stored in the decoded image area 402 and resized to the resolution of the display 110. Then, the system control unit 101 stores the resized image in the display image storage area 404 referred to by the display control unit 104.

  By performing the series of processing from step S704 to step S706, when there is no operation from the user, the image stored in the resized image storage area 403 having high responsiveness to the operation is changed to the decoded image storage area 402 giving priority to image quality. It is possible to automatically switch the image to be resized to the stored image.

  As described above, according to the present embodiment, an image (resized image) having a size that can be processed within a predetermined time is generated, and an image is displayed using the resized image when the user performs an operation on the image. As a result, even when the user performs a zoom operation, particularly when a continuous zoom operation is performed and a resize request is generated continuously, high-definition is maintained while maintaining the responsiveness of the display on the display 110 to the operation. Can display a simple image.

(Embodiment 2)
In the first embodiment, as shown in the flowchart of FIG. 6, the processing time required to resize the image stored in the decoded image storage area 402 to the same resolution as the display 110 is calculated, and the processing time is predetermined. A determination was made as to whether it was longer than the time. However, it is also possible to determine based on the image size of the decoded image storage area 402 without calculating the processing time. This will be described with reference to FIGS.

  FIG. 8 shows the configuration of the system control unit 101 in FIG. 1 in this embodiment. The image size determination unit 801 determines whether the size of the image data acquired by the image size acquisition unit 301 is larger than a predetermined size. The predetermined size is a size that can be resized to the resolution of the display 110 within the predetermined time described above, and the system control unit 101 in advance based on the resolution of the display 110, the number of gradations of the image to be handled, the data format, and the like. And may be stored in the memory 103 or the like.

  Next, the step of writing the read image in the memory 103 (step S501) in this embodiment will be described with reference to the flowchart of FIG. In the flowchart of FIG. 9, steps S601 and S602 are the same as those in the flowchart of FIG.

  In step S901, the image size acquisition unit 301 acquires the size of the image stored in the decoded image storage area 402, and the image size determination unit 801 determines whether it is larger than a predetermined size.

  If it is determined in step S901 that the size of the image stored in the decoded image storage area 402 is larger than the predetermined size, the image stored in the decoded image storage area 402 becomes smaller than the predetermined size in step S902. Are resized and stored in the resized image storage area 403. Here, it is preferable to resize the image stored in the resized image storage area 403 to a predetermined size which is the maximum size. However, since the memory capacity is compressed, the size ends in a predetermined time, that is, a size smaller than the predetermined size. Any size is acceptable.

  If it is determined in step S901 that the size of the image stored in the decoded image storage area 402 is smaller than or equal to the predetermined size, the processing in step S501 ends.

  As described above, according to the present embodiment, the resized image is generated when it is determined that the size of the image stored in the decoded image storage area 402 is larger than the predetermined size. As a result, the time for calculating the processing time required to resize the image stored in the decoded image storage area 402 is not required, and the processing can be performed at higher speed.

(Embodiment 3)
In the first embodiment, when a user operation is performed, display is performed using an image stored in the resized image storage area 403. However, when the zoom magnification is increased by the user's zoom operation, the area corresponding to the user's operation, that is, the area 202 is reduced, and the number of pixels to be referenced is reduced. Therefore, even if the image in the decoded image storage area 402 is used, the image is quickly resized. It becomes possible to do. Therefore, in this embodiment, when the zoom magnification is smaller than the predetermined magnification, the image stored in the resized image storage area 403 is stored, and when the zoom magnification is larger than the predetermined magnification, the image is stored in the decoded image storage area 402. Resize using the image. Details of the processing will be described with reference to FIGS. 10 and 11.

  FIG. 10 shows the configuration of the system control unit 101 in FIG. 1 in the present embodiment. The magnification calculation unit 1001 calculates a zoom magnification based on an area 202 displayed on the display 110 by a user operation such as a zoom operation or a scroll operation. The magnification determination unit 1002 determines whether the zoom magnification calculated by the magnification calculation unit 1001 is larger than a predetermined magnification. Note that the predetermined magnification is calculated in advance by the system control unit 101 based on the image size and stored in the memory 103 or the like.

  Next, the step of resizing the image by the user's operation in this embodiment (step S502) will be described using the flowchart of FIG. In the flowchart of FIG. 11, steps S701, S702, S704, S705, and S706 are the same as the flowchart shown in FIG.

  In step S1101, first, the magnification calculation unit 306 calculates a zoom magnification based on an area 202 displayed on the display 110 by a user operation such as a zoom operation. Then, the magnification determination unit 307 determines whether or not the zoom magnification calculated by the magnification calculation unit 306 is larger than a predetermined magnification.

  If it is determined in step S1101 that the zoom magnification is larger than the predetermined magnification, in step S902, the resize processing unit 109 cuts out the area 202 from the image stored in the decoded image area 402 and resizes to the resolution of the display 110. Then, the system control unit 101 stores the resized image in the display image storage area 404 referred to by the display control unit 104.

  On the other hand, if it is not determined in step S1101 that the zoom magnification is larger than the predetermined magnification, the resize processing unit 109 cuts out the area 202 from the image stored in the resized image storage area 403 in step S1103, and Resizing to the same resolution as the resolution. Then, the system control unit 101 stores the resized image in the display image storage area 404 referred to by the display control unit 104.

  As described above, according to the present embodiment, when the zoom magnification increases, resizing is performed using the image stored in the decoded image area 402, and the image is displayed. As a result, it is possible to display at high speed without impairing the image quality of the original image.

  The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to such specific embodiments, and various modifications can be made within the scope of the gist of the present invention described in the claims.・ Change is possible. Moreover, you may implement combining each embodiment mentioned above arbitrarily.

DESCRIPTION OF SYMBOLS 100 Image reproduction apparatus 101 System control part 104 Display control part 105 Input part 109 Resizing process part

Claims (15)

Reading means to read the image,
Resizing means for resizing the image read by the reading means;
Display control means for displaying an image resized by the resizing means on a display unit;
When the processing time required for the resizing unit to resize the image to the size of the display unit is longer than a predetermined time, the generating unit generates an image that is resized to a size that makes the processing time shorter than the predetermined time. When,
Storing means for storing the image generated by the generating means,
The display control unit displays an image stored in the storage unit and resized to the size of the display unit by the resizing unit on the display unit. Reading means to read the image,
Resizing means for resizing the image read by the reading means;
Display control means for displaying an image resized by the resizing means on a display unit;
Determining means for determining whether the processing time required for the resizing means to resize the image to the size of the display unit is longer than a predetermined time;
When the determination unit determines that the processing time is longer than the predetermined time, the generation unit generates an image that is resized to the size that makes the processing time shorter than the predetermined time. Image playback device. Reading means to read the image,
Resizing means for resizing the image read by the reading means;
Display control means for displaying an image resized by the resizing means on a display unit;
A determination unit that determines whether or not the size of the image read by the reading unit is larger than a predetermined size within a predetermined time required for the resizing unit to resize to the size of the display unit;
A generation unit configured to generate an image obtained by resizing the image to a size equal to or smaller than the predetermined size when the determination unit determines that the size of the image read by the reading unit is larger than the predetermined size; An image reproducing apparatus characterized by the above. Storing means for storing the image generated by the generating means;
4. The image reproducing apparatus according to claim 2, wherein the display control unit displays an image stored in the storage unit and resized to the size of the display unit by the resizing unit on the display unit. . An instruction means for instructing processing on the image displayed on the display unit;
The image reproducing apparatus according to claim 1, wherein the resizing unit processes an image stored in the storage unit in accordance with an instruction from the instruction unit and resizes the image to a size of the display unit.   The display control means displays the image stored in the storage means and resized by the resizing means in accordance with an instruction from the instruction means on the display unit, and then read by the reading means in accordance with an instruction from the instruction means. 6. The image reproducing apparatus according to claim 5, wherein the image is an image that has been resized by the resizing unit without going through the generating unit, and is displayed on the display unit.   The image reproducing apparatus according to claim 5, wherein the instruction unit is capable of instructing an electronic zoom operation of cutting out an image displayed on the display unit and displaying the enlarged image or reducing the image.   The resizing means cuts out an image of an area based on an instruction from the instruction means from an image read by the reading means when an electronic zoom magnification according to an instruction from the instruction means is larger than a predetermined magnification, and The image reproducing apparatus according to claim 7, wherein the image reproducing apparatus is resized to a size.   The image reproducing apparatus according to claim 5, wherein the instruction unit is capable of instructing a scroll operation for scrolling and displaying an image displayed on the display unit.   The image reproduction device according to claim 1, wherein the predetermined time corresponds to a cycle in which the display control unit updates the display of the display unit.   10. The image reproducing apparatus according to claim 5, wherein the predetermined time corresponds to an update period of an instruction from the instruction unit. A reading step to read the image;
A resizing step for resizing the image read in the reading step;
A display control step for displaying the image resized in the resizing step on a display unit; and a processing time required for the resizing unit to resize the image to the size of the display unit is longer than a predetermined time. A generation step of generating an image resized to a size shorter than the predetermined time;
Storing the image generated in the generating step in a storage means,
In the display control step, the image stored in the storage means and resized to the size of the display unit in the resizing step is displayed on the display unit. A reading step to read the image;
A resizing step for resizing the image read in the reading step;
A display control step of displaying the image resized in the resizing step on a display unit, and determining whether or not a processing time required for the resizing means to resize the image to the size of the display unit is longer than a predetermined time A determination step;
And a generating step of generating an image that is resized to a size such that the processing time is shorter than the predetermined time when it is determined in the determination step that the processing time is longer than the predetermined time. A method for controlling an image reproducing apparatus. A reading step to read the image;
A resizing step for resizing the image read by the reading step;
A display control step for displaying the image resized in the resizing step on a display unit; and a time required for the resizing means to resize the image read in the reading step to the size of the display unit within a predetermined time A determination step for determining whether or not the predetermined size is greater than
A generation step of generating an image obtained by resizing the image to a size equal to or smaller than the predetermined size when it is determined in the determination step that the size of the image read in the reading step is larger than the predetermined size; And a control method for the image reproducing apparatus. 15. A computer program for causing a computer to execute the control method of the image reproducing apparatus according to claim 12.

Images