WO2022254771A1

WO2022254771A1 - Signal processing circuit, and program

Info

Publication number: WO2022254771A1
Application number: PCT/JP2022/001317
Authority: WO
Inventors: 友哉谷野; 貴之栗原
Original assignee: ソニーグループ株式会社
Priority date: 2021-06-02
Filing date: 2022-01-17
Publication date: 2022-12-08
Also published as: JPWO2022254771A1

Abstract

A signal processing circuit according to one embodiment of the present technology is equipped with a generation unit. The generation unit overlays different pattern signals respectively on a right-eye image and a left-eye image that form a stereoscopic image. Accordingly, a high-quality viewing experience can be achieved. Additionally, it is possible to limit the deterioration of image quality caused by noise, while reducing moiré. It is also possible to prevent the unnecessary deterioration of image quality caused by noise at a peripheral angle of view and reduce the noticeability of noise to an observer.

Description

Signal processing circuit and program

This technology relates to a signal processing circuit and a program applicable to 3D display and the like.

Patent Document 1 discloses a display unit having a display area for displaying a two-dimensional image, and a device for separating an image displayed in the display area into images observed at predetermined observation positions horizontally spaced apart. A display device comprising an optical element having a plurality of structures is described. In this display device, pixels are arranged in a matrix in the horizontal direction and the vertical direction in the display area, and the pixels with different planar shapes are arranged in each row at a constant cycle. Further, the structure of the optical element is arranged so as to be inclined with respect to the vertical direction at an inclination that satisfies a predetermined condition. As a result, it is possible to reduce moire caused by the arrangement relationship of pixels in the display unit (paragraphs [0037] to [0041] [0049] to [0053] FIGS. 1 and 3 of Patent Document 1). .

JP 2017-181787 A

Devices that display such images are in demand for technology that can provide a high-quality viewing experience.

In view of the circumstances described above, the purpose of this technology is to provide a signal processing circuit and program capable of realizing a high-quality viewing experience.

In order to achieve the above object, a signal processing circuit according to one aspect of the present technology includes a generator.
The generator superimposes different pattern signals on a right-eye image and a left-eye image forming a stereoscopic image.

In this signal processing circuit, different pattern signals are superimposed on the right-eye image and the left-eye image forming a stereoscopic image. This makes it possible to achieve a high-quality viewing experience.

The pattern signal may include a random signal with respect to the pixel array.

The different pattern signals may be signals that provide parallax to the right eye that views the right-eye image and the left eye that views the left-eye image.

The different pattern signals may be signals having a parallax different from the parallax of the pixels of the right-eye image and the left-eye image to be superimposed.

The generating unit may superimpose the pattern signal on a depth different from the depth range obtained from the right-eye image and the left-eye image.

The generation unit may determine the depth of the pattern signal to be superimposed on the right-eye image or the left-eye image based on depths obtained from the right-eye image and the left-eye image.

The generation unit may temporally change the depth of the pattern signal superimposed on the right-eye image or the left-eye image.

The generation unit may determine the depth of the pattern signal to be superimposed on the right-eye image or the left-eye image based on luminance information about the right-eye image and the left-eye image.

The pattern signal may be a display that displays the stereoscopic image and a pattern related to the pixel structure of the display. In this case, the generator may generate the pattern signal based on positional information of an observer viewing the display.

In the signal processing circuit, further, based on the display information about the display, the pixel information about the pixel structure, and the position information, dark portions of display unevenness in the right-eye image and the left-eye image visually recognized by the observer are corrected. An estimation unit for estimating pixel positions may be provided.

The generating unit may generate the pattern signal for correcting the bias of the dark portion by the estimating unit.

The generating unit may generate the pattern signal that increases the luminance of pixels adjacent to the pixel position in the dark area.

The generating unit may generate the pattern signal that reduces the luminance of a bright portion arranged at a pixel position different from the pixel position of the dark portion.

The signal processing circuit may further include an acquisition unit that acquires position information of the observer with respect to the display. In this case, the generator may change the pattern signal based on the position information.

The generator may multiply the pattern signal by a coefficient dependent on the observation angle of the observer.

A program according to an embodiment of the present technology causes a computer system to execute the following steps.
A step of superimposing different pattern signals on a right-eye image and a left-eye image forming a stereoscopic image.

It is a figure which shows the appearance of a display device, and description of moire. It is a schematic diagram which shows a noise surface. 3 is a block diagram of a signal processing circuit; FIG. It is a figure which shows an example of the gain with respect to an observation angle. 3 is a block diagram of a signal processing circuit; FIG. 3 is a block diagram of a signal processing circuit; FIG. 3 is a block diagram of a signal processing circuit; FIG. It is a schematic diagram explaining a 2nd method. 3 is a block diagram of a signal processing circuit; FIG. FIG. 10 is a schematic diagram showing a case where the brightness of a bright portion is lowered; FIG. 10 is a schematic diagram showing a case where the brightness of pixels around a dark portion is increased;

Hereinafter, embodiments according to the present technology will be described with reference to the drawings.

<First embodiment>
[Occurrence of Moire]
FIG. 1 is a diagram illustrating the appearance of a display device and explanation of moire according to a first embodiment of the present technology.

FIG. 1A is a schematic diagram of a display device 100 capable of displaying a stereoscopic image.

For example, the display device 100 has a display surface 1, an observer detection section (not shown), and the like. The display surface 1 displays a right-eye image and a left-eye image to the right and left eyes of an observer. In this embodiment, an optical member such as a lenticular lens is attached to the display surface 1 so that an observer can view a stereoscopic image with the naked eye.
The observer detection unit detects the position information of the observer. In this embodiment, the position information includes the viewing angle and the position of the viewer on the display device 100 (display surface 1) of the viewer. In addition, the positions of the observer's left eye and right eye, the line-of-sight direction of the left eye, the line-of-sight direction of the right eye, the field of view of the observer, the posture of the observer, the face, etc. may be detected as the position information.

The observer detection unit may be configured with a camera, a depth camera, a motion sensor, or the like, or may be realized with a configuration that can track the observer.

FIG. 1B is a diagram schematically showing pixels seen through a lenticular lens. FIG. 1C is a diagram schematically showing a pixel structure in IPS (In Plane Switching) mode. FIG. 1D is a diagram schematically showing a lenticular lens. FIG. 1E is a diagram schematically showing pixels through a lenticular lens. Note that the brightness in FIG. 1 represents the color of the pixel (RGB, etc.).

As shown in FIG. 1B , in pixels seen through the lenticular lens 3 , the dotted line portion 4 of the pixel under the lenticular lens 3 seems to expand to the lens width of the lenticular lens 3 .
On the other hand, as shown in FIG. 1C, the IPS mode pixel structure has a tilted structure in which the tilt differs every other row. Also, as shown in FIG. 1D, the lenticular lens 3 is tilted (eg, 11 degrees) in order to balance moiré reduction and horizontal/vertical resolution.
In this case, as shown in FIG. 1E, the portion where the central axis 5 of the lenticular lens 3 and the phase of the black stripe 6 match appears as a dark portion (black dot 8) within the frame 7. FIG. This bias in the dark area causes moire.

In order to reduce this moire, the display device 100 has a signal processing circuit (not shown) in this embodiment.
The signal processing circuit superimposes different pattern signals on the right-eye image and the left-eye image forming a stereoscopic image. That is, the signal processing circuit adds a horizontal offset to the depth of the right-eye (left-eye) image so that the superimposed pattern signal (noise surface 2) is shifted in depth. Hereinafter, references to offset refer to horizontal offset.

In this embodiment, the pattern signal is a random signal with respect to the pixel array. The pattern signal also provides parallax to the viewer's left and right eyes. That is, the pattern signal is a signal having a parallax different from the parallax in the pixels of the right-eye image and the left-eye image. As a result, it is possible to suppress deterioration in image quality and image fusion due to noise.

In the present embodiment, pattern signals are superimposed on the right-eye image and the left-eye image so as to reduce bias in the dark regions determined by the pixel structure and the settings of the optical elements, thereby reducing moire.
As patterns to be superimposed, there are the following first method and second method.

The first method is to suppress the amplitude of the spatial frequency of the moire by superimposing a random noise signal on the row of pixels.
The second method is to suppress periodic luminance changes that cause moiré based on the positional information of the observer with pattern signals related to the optical element (lenticular lens) and pixel structure.

For example, as a first method, the signal processing circuit determines the offset based on the depth information (see FIG. 5). The signal processing circuit also determines the offset based on the time information (see FIG. 6). The signal processing circuit also determines the offset based on the image gradation (luminance) (see FIG. 7).

Further, for example, as a second method, the pixel position of the dark part is estimated from the tilt and pitch parameters obtained from the relationship between the lenticular lens and the pixel, and the pixel position of the observer's position information. A pattern signal is generated for increasing or decreasing the luminance value of a pixel at a suitable position different from the pixel position of the dark area.

Also, since the intensity of moiré differs depending on the viewing angle of the observer, in this embodiment, the signal processing circuit changes the amount of noise added to the pattern signal according to the viewing angle (see FIG. 4). Also, in this embodiment, the signal processing circuit adds a pattern signal that cancels moiré visible from the position of the observer.

FIG. 2 is a schematic diagram showing the noise surface. FIG. 2A is a diagram showing an image when no noise surface is superimposed. FIG. 2B is a diagram showing a case where parallax is not provided on the noise surface. FIG. 2C is a diagram showing a case where parallax is provided on the noise surface. The right figures of FIGS. 2A to 2C are enlarged views of the left figures.

As shown in the right diagram of FIG. 2A, if the noise surface is not superimposed, moire occurs and the viewer's viewing experience is greatly impaired.

Also, as shown in FIG. 2B, for example, as a method of pseudo-generating random numbers using coordinate values, a method of value noise, gradation noise, etc., in which the size of a two-dimensional noise surface is controlled by combining two-dimensional correction processing. is used. Using the coordinate values of the noise plane thus obtained as a function of time, it is possible to change the position of the brightness and darkness of the screen in the time direction as well.
However, in this case, the noise plane is fixed to the display plane. As a result, if the display surface is recognized when expressing depth on a 3D display, fusion of the 3D content is disturbed, and the viewer's viewing experience is greatly impaired.

In this embodiment, depth can be imparted to the generated noise surface by offsetting the horizontal coordinate positions of the right-eye image and the left-eye image relative to each other. That is, by setting the offset of the noise surface to a value that is far from the depth of the displayed 3D content, fusion can be avoided as shown in FIG. 2C, and the observer recognizes noise. can be reduced.

In this embodiment, the depth of the noise surface that prevents the noise surface from being recognized is set as follows.

For example, set the depth away from the depth range of the displayed content. In this case, assuming that the depth range of the content displayed on the display device 100 shown in FIG. can be done. Further, for example, when the display surface 1 of the display device 100 is tilted by 45 degrees to display a box-shaped space whose cross section is the display surface, a noise surface is set outside the box.

For example, obtain the depth information of the displayed content and set it to a value different from that depth. In this case, the depth is set before or behind each depth position of the acquired content. As a result, when the observer gazes at the content, a position different from the convergence position becomes the convergence position of the noise surface, so that the noise surface can be prevented from being recognized.

For example, set the depth of the noise surface to change over time. In the present embodiment, a horizontal offset is added to the noise surface, and spatially thick noise can be realized by adding time information to the offset.

The program that generates the noise surface may be set arbitrarily. For example, an interpolating function that adjusts the two-dimensional noise size using a random number function may be used.

[Signal processing circuit]
FIG. 3 is a block diagram of the signal processing circuit 20. As shown in FIG. 3 to 7 are examples of signal processing circuits when implementing the first method described above.

As shown in FIG. 3, the signal processing circuit 20 has a position information acquisition section 21, a visual gain section 22, a noise generation section 23, an offset generation section 24, a synthesis section 25, and a stereoscopic display image generation section .

The position information acquisition unit 21 acquires the position information of the observer. In this embodiment, the observation angle of the observer is acquired from various sensors mounted on the display device 100 and supplied to the position information acquisition section 21 .
Further, in this embodiment, the position information acquisition unit 21 supplies the observation angle of the observer to the visual gain unit 22 and the stereoscopic display image generation unit 26 .

The visual gain unit 22 changes the noise addition amount (gain) of the pattern signal according to the observation angle of the observer. In this embodiment, the visual gain unit 22 multiplies the pattern signal generated by the first method and the second method by a gain that suppresses the correction value.
Further, in this embodiment, the gain from the visual gain section 22 is supplied to the noise generation section 23 .

FIG. 4 is a diagram showing an example of gains with respect to observation angles.

As shown in FIG. 4A, the position information acquisition unit 21 acquires the position and observation angle θ of the observer 10 . In this embodiment, the position of the observer 10 is defined by an absolute coordinate system (world coordinate system) (for example, XYZ coordinate values), or a predetermined point (for example, the display surface 1) as a reference (origin ) in a coordinate system defined by a local coordinate system (eg, xyz coordinate values or uvd coordinate values).

FIG. 4B is a graph showing an example of the relationship between the observation angle and the observation angle gain. FIG. 4B shows a graph in which the horizontal axis is the viewing angle and the vertical axis is the viewing angle gain.

The position information acquisition unit 21 obtains the observation angle tan θ=(x−x0)/z0 from the position (coordinates) of the observer 10 (x0, y0, z0) and the horizontal coordinate x.
As shown in FIG. 4B , the visual gain unit 22 multiplies the pattern signal by an observation angle gain corresponding to the observation angle based on the information supplied from the position information acquisition unit 21 . Note that in FIG. 4B, the angle at which the horizontal end position is viewed at the optimal viewing position is 1.

Note that in the present embodiment, an observation angle gain that suppresses the pattern signal is multiplied according to the observation angle, as shown in FIG. 4B. It is not limited to this, and may be multiplied by an observation angle gain such as a downward convex. These gains may be arbitrarily set based on the design of the display device.

The noise generator 23 superimposes different pattern signals on the right-eye image (R) and the left-eye image (L) forming a stereoscopic image. In this embodiment, the noise generator 23 generates a pattern signal based on image coordinates with a size determined by an optical element (lenticular lens) of a display (display surface). The noise generation unit 23 also multiplies each pixel of the generated pattern signal by the gain supplied by the visual gain unit 22 . Thereby, an increase in noise can be suppressed.
In this embodiment, the noise generator 23 supplies a pattern signal to the left eye image synthesizer 25 .

The noise generator 23 also adds the offset generated by the offset generator 24 to the pattern signal, and supplies the pattern signal to the right-eye image synthesizer 25 . That is, by adding an offset to the right-eye image, a parallax different from the display of the position of the noise surface superimposed on the left-eye image is created.

The offset generator 24 generates an offset in the generated pattern signal. In the signal processing circuit 20 of FIG. 3, the offset generation unit 24 adds an offset away from the depth range of the displayed content. A specific numerical value of the offset may be set in advance or may be set by the observer.
In this embodiment, the offset is supplied to the noise generator 23 of the right eye image.

The synthesizer 25 synthesizes the pattern signal with the right-eye image and the left-eye image. In this embodiment, the synthesizing unit 25 synthesizes the pattern signal with the right-eye image and the left-eye image at an appropriate ratio.
In this embodiment, the pattern signal synthesized with noise by the synthesizing unit 25 is supplied to the stereoscopic display image generating unit 26 .

The stereoscopic display image generation unit 26 determines signals to be input to each sub-pixel based on the right-eye image and the left-eye image supplied from the synthesis unit 25 and the position information of the observer supplied from the position information acquisition unit 21. do.
In this embodiment, the stereoscopic image generated by the stereoscopic display image generator 26 is supplied to the display device and displayed via the display surface 1 .

In addition, in the present embodiment, the position information acquisition unit 21 corresponds to an acquisition unit that acquires the position information of the observer with respect to the display.
In this embodiment, the visual gain unit 22, the noise generation unit 23, and the offset generation unit 24 function as generation units that superimpose different pattern signals on the right-eye image and the left-eye image forming the stereoscopic image. .
Note that in the present embodiment, the gain that suppresses the correction value corresponds to a coefficient that depends on the angle of the observer.

FIG. 5 is a block diagram of the signal processing circuit 30. FIG. In FIG. 5, an offset is added based on depth information. In the signal processing circuit shown in FIG. 5 and subsequent figures, description of blocks similar to those of the signal processing circuit 20 shown in FIG. 3 will be omitted.

As shown in FIG. 5, the signal processing circuit 30 has a depth detection section 31 in addition to each block of the signal processing circuit 20 of FIG.

The depth detection unit 31 detects depth information of displayed content. In this embodiment, the detected depth information is supplied to the offset generator 24 .

The offset generator 24 generates an offset based on the detected depth information. In this embodiment, the offset generation 24 generates an offset so that a noise plane is superimposed in front of or behind each depth position of the acquired content.
In this embodiment, the generated offset is supplied to the noise generator 23 for the right-eye image.

In the signal processing circuit 30 of FIG. 5, by setting the noise surface to a depth different from the depth of the content, it is possible to reduce moire with a greater effect than the noise surface whose depth is fixed, and to suppress the harmful effects of noise. Become.

FIG. 6 is a block diagram of the signal processing circuit 40. FIG. In FIG. 6, an offset is added based on time information.

The offset generator 24 generates an offset based on time information. In this embodiment, the offset generator 24 generates an offset that changes in the time direction with respect to the depth of the noise surface. For example, the offset is generated such that it varies sinusoidally over time.
In this embodiment, the generated offset is supplied to the noise generator 23 for the right-eye image.

In the signal processing circuit 40 of FIG. 6, the depth of the noise surface is thickened so that the noise is less noticeable than the noise surface whose depth is fixed.

FIG. 7 is a block diagram of the signal processing circuit 50. FIG. In FIG. 7, an offset is added based on luminance information.

The offset generation unit 24 generates an offset based on luminance information. In this embodiment, the offset generation unit 24 acquires the right-eye image of the content and generates an offset based on luminance information such as brightness of the content. For example, the pattern signal is generated based on the positions of pixels with high brightness and the positions of pixels with low brightness in the content.

In the signal processing circuit 50 of FIG. 7, by varying the depth of the noise surface depending on the location, the noise is less noticeable than the noise surface with a fixed depth.

FIG. 8 is a schematic diagram explaining the second method.

FIG. 8A is a diagram schematically showing pixels through a lenticular lens. FIG. 8B is a diagram of a simulated moire image. FIG. 8C is a diagram when the second method of correction is not performed. FIG. 8D is a diagram when the second method of correction is performed.

As shown in FIG. 8A, dark portions may occur in the long side direction of the frame 15 as described in FIG. However, depending on the observer, moire with a pitch larger than that of the dark portion may be of concern. Also, as shown in FIG. 8C, this larger pitch makes moire more noticeable. The reason for these problems is that portions of the black stripes having different phases occur periodically.

In a second method, the signal processing circuit comprises an estimator.
The estimation unit estimates the pixel positions of the dark portions of the display unevenness in the right-eye and left-eye images viewed by the observer, based on the display information on the display, the pixel information on the pixel structure, and the position information on the observer.

In the second method, the noise generation unit generates a pattern signal for correcting bias in dark areas from the black stripe pixel positions estimated by the estimation unit. A specific example will be described with reference to FIGS. 10 and 11. FIG.

As shown in FIG. 8D, it is possible to reduce moire contrast by correcting bias in dark areas.

FIG. 9 is a block diagram of the signal processing circuit 60. FIG.

As shown in FIG. 9, the signal processing circuit 60 has an estimation unit 61, a noise generation unit 62, a position information acquisition unit 21, a visual gain unit 22, and a stereoscopic display image generation unit 26.

The estimation unit 61 estimates the pixel position of the dark area as described above. In this embodiment, the pixel position of the dark portion estimated by the estimation unit 61 is supplied to the noise generation unit 62 .

For example, the estimating unit 61 assigns a viewpoint number to each sub-pixel based on the tilt obtained from the relationship between the lenticular lens and the pixel as the display information, the pitch parameter as the pixel information, and the position information of the observer. Estimate the pixel position of
That is, by estimating the pixels to be corrected, bias in dark areas can be corrected.

The noise generation unit 62 generates a pattern signal for correcting bias in dark areas. In this embodiment, the noise generator 62 reduces the contrast of moire by lowering the brightness of the bright area.

In the present embodiment, the estimating unit 61 estimates the pixel position of the dark portion of the display unevenness in the right-eye image and the left-eye image viewed by the observer based on the display information about the display, the pixel information about the pixel structure, and the position information. corresponds to the estimating part.

FIG. 10 is a schematic diagram showing a case where the brightness of bright areas is lowered. FIG. 10A is a diagram schematically showing pixels through a lenticular lens. FIG. 10B is a diagram schematically showing pixels in which the brightness of the bright portion is lowered. FIG. 10C is a schematic diagram showing a lenticular lens.

The estimating unit 61 estimates the pixel position of the dark part 70 . As shown in FIGS. 10A and 10C, the pixel where the dark portion 70 appears is when the tilt 72 of the lenticular lens 71 and the tilt direction of the pixel match, and in FIG.

As shown in FIG. 10B, the noise generator 62 reduces the contrast of moire by reducing the brightness of the bright area. Note that in the present embodiment, the bright portion refers to the pixels other than the dark portion in the even-numbered rows in which the dark portion appears. For example, the bright portion is pixel 73 in the even row shown in FIG. 11C.
In order to reduce the spatial frequency contrast of the moire, it is effective to increase the effective aperture width of the even rows and reduce the brightness of the viewpoint around the dark area.

The noise generation unit 62 also reduces moire contrast by increasing the brightness of pixels around the dark area.

FIG. 11 is a schematic diagram showing a case where the brightness of pixels around a dark portion is increased. FIG. 11A is a diagram schematically showing pixels through a lenticular lens. FIG. 11B is a diagram schematically showing pixels in which the brightness of pixels around a dark portion is increased. FIG. 11C is a schematic diagram showing a lenticular lens.

As shown in FIG. 11B, the noise generation unit 62 reduces moiré contrast by increasing the luminance of pixels around the dark portion 70 . For example, the noise generation unit 62 increases the brightness of the pixels 75 in the even-numbered rows (row 2 in FIG. 11C) and the adjacent odd-numbered rows (

rows

1 and 3 in FIG. 11C) that are dark areas.

As described above, the signal processing circuit 20 according to the present embodiment superimposes different pattern signals on the right-eye image and the left-eye image forming a stereoscopic image. This makes it possible to achieve a high-quality viewing experience.

　Conventionally, the occurrence of moiré in 3D displays interfered with the viewer's viewing experience. If noise is added to the signal to suppress the generation of moire, the fusion will be disturbed. In addition, the intensity of moiré differs depending on the viewing angle of the observer.

The technique adds a horizontal offset to the pattern signal to place the noise plane at a different depth than the depths of the right- and left-eye images. Also, a pattern signal is added to increase or decrease the brightness of the pixels so as to cancel the moire visible from the position of the observer. Furthermore, the amount of added noise is changed according to the viewing angle of the observer.
This makes it possible to reduce image quality deterioration due to noise while reducing moire. In addition, it is possible to prevent unnecessary deterioration of image quality due to noise at peripheral angles of view, and to make the noise inconspicuous to the observer.

<Other embodiments>
The present technology is not limited to the embodiments described above, and various other embodiments can be implemented.

In the above embodiment, an offset was added to the noise plane of the right eye. Without being limited to this, an offset may be added to the noise surface superimposed on the left-eye image. Also, if there is parallax between the noise planes of the right-eye image and the left-eye image, an offset may be added to both noise planes.

In the above embodiment, an offset is added according to depth information, time information, and image gradation. Without being limited to this, for example, an upper limit may be set so that the offset value is superimposed within a predetermined range from the display surface.

In the above embodiment, the signal processing circuit was mounted on the display device and the pattern signal was generated. Without being limited to this, the present technology may be realized by connecting an information processing apparatus having a signal processing circuit to a display device. Moreover, the display device and the above information processing apparatus can be implemented not only in a computer system constituted by a single computer, but also in a computer system in which a plurality of computers operate in conjunction with each other.

For example, an information processing apparatus has hardware necessary for configuring a computer, such as processors such as CPU, GPU, and DSP, memories such as ROM and RAM, and storage devices such as HDD.
For example, an arbitrary computer such as a PC can realize the information processing device. Of course, hardware such as FPGA and ASIC may be used.
In this embodiment, the CPU executes a predetermined program to configure the noise generator as a functional block. Of course, dedicated hardware such as an IC (integrated circuit) may be used to implement the functional blocks.
A program is installed in an information processing apparatus via various recording media, for example. Alternatively, program installation may be performed via the Internet or the like.
The type of recording medium on which the program is recorded is not limited, and any computer-readable recording medium may be used. For example, any computer-readable non-transitory storage medium may be used.

In the present disclosure, a system means a set of multiple components (devices, modules (parts), etc.), and it does not matter whether all the components are in the same housing. Therefore, a plurality of devices housed in separate housings and connected via a network, and a single device housing a plurality of modules within a single housing, are both systems.
In addition, execution of the signal processing circuit, information processing device, and signal processing method according to the present technology by a computer system, for example, when visual gain, offset generation, pattern signal generation, etc. are executed by a single computer, and when each process is executed by a different computer. Execution of each process by a predetermined computer includes causing another computer to execute part or all of the process and obtaining the result.

That is, the signal processing circuit and program according to the present technology can also be applied to a cloud computing configuration in which a single function is shared by multiple devices via a network and processed jointly.

It should be noted that the effects described in the present disclosure are merely examples and are not limited, and other effects may also occur. The above description of multiple effects does not necessarily mean that those effects are exhibited simultaneously. It means that at least one of the above-described effects can be obtained depending on the conditions, etc., and of course, effects not described in the present disclosure may also be exhibited.

It is also possible to combine at least two of the characteristic portions of each form described above. That is, various characteristic portions described in each embodiment may be combined arbitrarily without distinguishing between each embodiment.

Note that the present technology can also adopt the following configuration.
(1)
A signal processing circuit, comprising: a generator that superimposes different pattern signals on a right-eye image and a left-eye image that form a stereoscopic image.
(2) The signal processing circuit according to (1),
The signal processing circuit, wherein the pattern signal includes a random signal with respect to the pixel array.
(3) The signal processing circuit according to (1),
The different pattern signals are signals that give parallax to a right eye viewing the right eye image and a left eye viewing the left eye image.
(4) The signal processing circuit according to (3),
The signal processing circuit, wherein the different pattern signals are signals having different parallaxes from pixels of the right-eye image and the left-eye image to be superimposed.
(5) The signal processing circuit according to (4),
The signal processing circuit, wherein the generating unit superimposes the pattern signal on a depth different from a depth range obtained from the right-eye image and the left-eye image.
(6) The signal processing circuit according to (4),
A signal processing circuit, wherein the generating unit determines the depth of the pattern signal to be superimposed on the right-eye image or the left-eye image based on depths obtained from the right-eye image and the left-eye image.
(7) The signal processing circuit according to (4),
A signal processing circuit in which the generation unit temporally changes the depth of the pattern signal superimposed on the right-eye image or the left-eye image.
(8) The signal processing circuit according to (4),
The signal processing circuit, wherein the generator determines the depth of the pattern signal superimposed on the right-eye image or the left-eye image based on luminance information about the right-eye image and the left-eye image.
(9) The signal processing circuit according to (1),
The pattern signal is a display that displays the stereoscopic image and a pattern related to a pixel structure of the display;
A signal processing circuit, wherein the generating unit generates the pattern signal based on positional information of an observer observing the display.
(10) The signal processing circuit according to (9), further comprising:
an estimating unit for estimating a pixel position of a dark portion of display unevenness in the right-eye image and the left-eye image viewed by the observer, based on the display information about the display, the pixel information about the pixel structure, and the position information. signal processing circuit.
(11) The signal processing circuit according to (10),
The signal processing circuit, wherein the generating unit generates the pattern signal for correcting the bias of the dark portion by the estimating unit.
(12) The signal processing circuit according to (11),
The generating section generates the pattern signal for increasing the luminance of pixels adjacent to the pixel position in the dark portion. A signal processing circuit.
(13) The signal processing circuit according to (11),
The signal processing circuit, wherein the generating unit generates the pattern signal for decreasing luminance of a bright portion arranged at a pixel position different from the pixel position of the dark portion.
(14) The signal processing circuit according to (1), further comprising:
An acquisition unit that acquires position information of the observer with respect to the display,
The signal processing circuit, wherein the generator changes the pattern signal based on the position information.
(15) The signal processing circuit according to (14),
The signal processing circuit, wherein the generator multiplies the pattern signal by a coefficient dependent on the observation angle of the observer.
(16)
A program for causing a computer system to execute a step of superimposing different pattern signals on a right-eye image and a left-eye image forming a stereoscopic image.

2 noise surface 3 lenticular lens 20 signal processing circuit 21 position information acquisition unit 22 visual gain unit 23 noise generation unit 24 offset generation unit 30 signal processing circuit 40 signal processing circuit 50 signal processing circuit 60 ... signal processing circuit 100 ... display device

Claims

A signal processing circuit, comprising: a generator that superimposes different pattern signals on a right-eye image and a left-eye image that form a stereoscopic image.
The signal processing circuit according to claim 1,
The signal processing circuit, wherein the pattern signal includes a random signal with respect to the pixel array.
The signal processing circuit according to claim 1,
The different pattern signals are signals that give parallax to a right eye viewing the right eye image and a left eye viewing the left eye image.
The signal processing circuit according to claim 3,
The signal processing circuit, wherein the different pattern signals are signals having different parallaxes from pixels of the right-eye image and the left-eye image to be superimposed.
The signal processing circuit according to claim 4,
The signal processing circuit, wherein the generating unit superimposes the pattern signal on a depth different from a depth range obtained from the right-eye image and the left-eye image.
The signal processing circuit according to claim 4,
A signal processing circuit, wherein the generating unit determines the depth of the pattern signal to be superimposed on the right-eye image or the left-eye image based on depths obtained from the right-eye image and the left-eye image.
The signal processing circuit according to claim 4,
A signal processing circuit in which the generation unit temporally changes the depth of the pattern signal superimposed on the right-eye image or the left-eye image.
The signal processing circuit according to claim 4,
The signal processing circuit, wherein the generator determines the depth of the pattern signal superimposed on the right-eye image or the left-eye image based on luminance information about the right-eye image and the left-eye image.
The signal processing circuit according to claim 1,
The pattern signal is a display that displays the stereoscopic image and a pattern related to a pixel structure of the display;
A signal processing circuit, wherein the generating unit generates the pattern signal based on positional information of an observer observing the display.
10. The signal processing circuit of claim 9, further comprising:
an estimating unit for estimating a pixel position of a dark portion of display unevenness in the right-eye image and the left-eye image viewed by the observer, based on the display information about the display, the pixel information about the pixel structure, and the position information. signal processing circuit.
A signal processing circuit according to claim 10,
The signal processing circuit, wherein the generating unit generates the pattern signal for correcting the bias of the dark portion by the estimating unit.
A signal processing circuit according to claim 11, wherein
The generating section generates the pattern signal for increasing the luminance of pixels adjacent to the pixel position in the dark portion. A signal processing circuit.
A signal processing circuit according to claim 11, wherein
The signal processing circuit, wherein the generating unit generates the pattern signal for decreasing luminance of a bright portion arranged at a pixel position different from the pixel position of the dark portion.
The signal processing circuit of claim 1, further comprising:
An acquisition unit that acquires position information of the observer with respect to the display,
The signal processing circuit, wherein the generator changes the pattern signal based on the position information.
15. A signal processing circuit according to claim 14,
The signal processing circuit, wherein the generator multiplies the pattern signal by a coefficient dependent on the observation angle of the observer.
A program for causing a computer system to execute a step of superimposing different pattern signals on a right-eye image and a left-eye image forming a stereoscopic image.