KR102586226B1 - View map data generaing method and apparatus using the same - Google Patents

Abstract

The present invention relates to a method of generating view map data, which includes determining the mis-alignment level between pixels of a multi-view autostereoscopic stereoscopic image display device and a lenticular lens, and setting the level of mis-alignment according to the determined mis-alignment level. Calculating view data of one line in the X direction of the view map data by applying a constant; and generating view map data by calculating Y-direction view data of the view map data based on the view data of one line in the X-direction.

Description

View map data generation method and device {VIEW MAP DATA GENERAING METHOD AND APPARATUS USING THE SAME}

The present invention relates to a method and device for generating view map data.

Glasses-free stereoscopic image display devices can produce stereoscopic images by allowing the viewer to feel binocular disparity without special glasses. A glasses-free stereoscopic image display device allows the light of a pixel containing left-eye image data to be projected toward the viewer's left eye when the viewer is in a position to feel a three-dimensional effect at a certain distance in front of the display device, while the right-eye image data is projected toward the viewer's left eye. The light from the written pixel is projected toward the viewer's right eye. To this end, the glasses-free stereoscopic image display device may install a parallax barrier or lenticular lens in front of the display panel to separate pixels visible to the viewer's left and right eyes.

FIG. 1 is a diagram for explaining the concept of a lenticular lens type stereoscopic image display device, and FIG. 2 is a diagram for explaining a lenticular lens type stereoscopic image display device and light profile.

In Figure 1, "REZ" is the right eye viewing zone where the pixel (hereinafter "right eye pixel") (R) in which the right eye image is written can be seen, and "LEZ" is the left eye image in the pixel array (PIX). This is the left eye viewing zone where the written pixel (hereinafter referred to as “left eye pixel”) (L) can be viewed. "PSUBS" is a transparent substrate to secure the back distance between the pixel array (PIX) and the lenticular lens (LENS).

The center of FIG. 2 shows a viewing diamond forming a viewing zone, a light profile, and view data, and the bottom of FIG. 2 schematically shows the view actually perceived within the viewing diamond.

As shown in Figures 1 and 2, a typical lenticular lens type three-dimensional image display device includes an upper substrate, a lower substrate, and an upper substrate.

It includes a pixel array (PIX) on which images are displayed and a lenticular lens (LENS) placed in front of the pixel array (PIX) to implement three-dimensional images.

A lenticular lens (LENS) is made of a material layer with a convex lens-shaped upper surface on a flat substrate and performs the function of dividing the left eye image (LEZ) and the right eye image (REZ). At the optimal viewing distance (OVD) from the lenticular lens (LENS), a diamond-shaped viewing diamond (VD) is formed through which images (REZ, LEZ) corresponding to the left and right eyes normally reach the left and right eyes, respectively.

One width of the viewing diamond (VD) is formed by the size of the gap between the viewer's eyes (e), which is intended to recognize a three-dimensional image by inputting images with parallax to the viewer's left and right eyes, respectively. At this time, view data, that is, an image, of the corresponding sub-pixel is formed in each viewing diamond (VD). The view data refers to an image captured by a camera separated by a standard distance between the eyes (e).

In this general lenticular lens type stereoscopic image display device, a transparent substrate (PSUBS) is inserted between the pixel array (PIX) and the lenticular lens (LENS) to maintain a constant back distance.

As mentioned above, the lenticular lens type stereoscopic image display device is implemented in a multi view method formed according to an initially designed view map, so the viewer can view the 3D image when entering the designated view area. You can watch it.

However, when manufacturing a glasses-free stereoscopic image display device, the lenticular lens (LENS) is mechanically attached to the pixel array (PIX) with a transparent substrate (PSUBS) in between. Therefore, when attaching a lenticular lens (LENS), there may be a difference in the alignment of the pixel (PIX) and the lenticular lens (LENS) due to process errors or process margins, which may result in the view that appears for each panel. The profile may be slightly different. If mis-alignment occurs between a pixel (PIX) and a lenticular lens (LENS), the left eye pixel and the right eye pixel are displayed together in the viewer's monocular eye (right eye or left eye), and the viewer may experience 3D crosstalk. You can.

Conventionally, when mis-alignment occurred between a pixel (PIX) and a lenticular lens (LENS), pixel data was modified by shifting the initially stored view map in the X-axis direction and combining it.

Figures 3 to 5 are diagrams illustrating the concept of correcting mis-alignment between pixels and lenticular lenses according to the prior art, and illustrate a case of implementing the 5-view technology.

Figure 3 is a diagram showing the case of a good product in which the alignment of the pixel (PIX) and the lenticular lens (LENS) are matched. When the alignment is matched, it is implemented in a multi-view method formed according to the initially designed view map, so the viewer can watch a normal 3D image when entering the designated view area.

Figure 4 is a diagram illustrating a screen displayed when mis-alignment occurs between a pixel (PIX) and a lenticular lens (LENS). As shown in FIG. 4, when mis-alignment occurs, crosstalk may occur in each of the 1 to 5 view areas. Accordingly, in the past, pixel data was corrected by shifting and combining initially designed view maps.

Figure 5 is a diagram showing the results of correcting pixel data of a glasses-free stereoscopic image display device in which mis-alignment occurred according to the prior art. When correcting mis-alignment according to the prior art, pixel data was corrected by shifting the initially designed view map. That is, the view pattern of view 1 is "1, 2, 3, 4, 5," and the view pattern of view 2 is "5, 1, 2, 3, 4" by shifting the view map. In the same way, view pattern 3 is The view pattern visible in the 4 view is "4, 5, 1, 2, 3", the view pattern visible in the 4 view is "3, 4, 5, 1, 2", and the view pattern visible in the 5 view is "2, 3, 4, Pixel data was corrected to 5, 1".

However, when correcting by shifting the initially set view map like this, there was a problem in that a step phenomenon occurred in the horizontal or vertical direction, as seen in the image after correction. In particular, when displaying an object with a large screen depth, the image may appear separated in the area where the difference occurs, and if the white pattern occurs horizontally, how to shift the view map There was a problem that correction was impossible.

The present invention provides a method and device for generating view map data that can correct errors when mis-alignment occurs between a pixel (PIX) and a lenticular lens (LENS).

The view map data generation method of the present invention includes the steps of determining the level of mis-alignment between the pixels of the multi-view autostereoscopic image display device and the lenticular lens, and setting a constant according to the determined level of mis-alignment. Applying the view map data to calculate one line of view data in the X direction; and generating view map data by calculating Y-direction view data of the view map data based on the view data of one line in the X-direction.

Here, the step of calculating the view data of one line in the It is possible to calculate the ratio (m/n) of ) by substituting it into the following equation.

m: Number of subpixel horizontal equal parts

n: Number of pixels selected from equal subpixels

x: horizontal pixel index

Hor: Total number of subpixels in the horizontal direction

N: Number of designed view maps

f(x): View data of 1 line in the X direction

In addition, the step of calculating the Y-direction view data and generating corrected view map data can be calculated by substituting the view data of one line in the X-direction into the following equation.

j: vertical pixel index

Ver: Total number of pixels in vertical direction

Meanwhile, the step of determining the misalignment level includes comparing a reference screen image stored according to the misalignment level with an actually captured inspection screen image of the multi-view glasses-free stereoscopic image display device; and determining the misalignment level set in the reference screen image with the highest similarity as a result of comparison as the misalignment level of the multi-view autostereoscopic image display device.

The view map data generating device of the present invention includes an error determination unit that determines a mis-alignment level; and a view map data operation unit that generates view map data according to the misalignment level. The error determination unit determines the level of mis-alignment between the pixels of the multi-view glasses-free stereoscopic image display device and the lenticular lens. The view map data calculation unit calculates the view data of one line in the X direction of the view map data by applying a constant set according to the determined misalignment level, and calculates the view data of the one line in the Y-direction view data is calculated to generate view map data.

The present invention generates and provides optimal view map data according to the mis-alignment level between pixels (PIX) and lenticular lenses (LENS) that occurs differently for each multi-view glasses-free stereoscopic image display device, thereby providing multi-view map data. The effect of improving the image quality of the view glasses-free stereoscopic image display device can be achieved. In addition, when modifying the view pattern according to the view map data generated according to the present invention, the correction characteristics of the view pattern are applied differently depending on the level of mis-alignment, so a step phenomenon that may occur in the corrected image can be improved, and the range of possible corrections has also been expanded so that white patterns occurring in the horizontal direction can also be corrected.

Figure 1 is a diagram for explaining the concept of a lenticular lens type stereoscopic image display device.
Figure 2 is a diagram for explaining a lenticular lens type stereoscopic image display device and light profile.
Figures 3 to 5 are diagrams illustrating the concept of correcting mis-alignment between pixels and lenticular lenses according to the prior art.
Figure 6 is a diagram showing a multi-view image displayed on a lens and pixel array.
Figure 7 is a schematic block diagram of a view map data generating device according to an embodiment of the present invention.
Figure 8 is a diagram illustrating an image display state according to the level of mis-alignment between the lens and the pixel array.
Figure 9 is a flowchart of a method for generating view map data according to an embodiment of the present invention.
10 to 15 are diagrams showing view map data according to an embodiment of the present invention.
Figure 16 is a block diagram schematically showing a multi-view autostereoscopic image display device according to an embodiment of the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. Like reference numerals refer to substantially the same elements throughout the specification. In the following description, if it is determined that a detailed description of a known function or configuration related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

The names of the components used in the following description were selected in consideration of the ease of writing the specification, and may be different from the names of the actual product.

Terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

Figure 6 is a diagram showing a multi-view image displayed on the lens and pixel array of a multi-view autostereoscopic stereoscopic image display device to which the method for generating view map data according to the present invention is applied.

Referring to Figure 6, the lenticular lens serves to divide the left and right eye images, and at an appropriate 3D viewing distance from the lenticular lens, the images corresponding to the left and right eyes normally reach the left and right eyes, respectively. A view diamond is formed.

Accordingly, the video image that passes through the pixel array passes through the lenticular lens, allowing different groups of images to enter the left and right eyes of the end viewer, allowing a three-dimensional stereoscopic image to be felt.

Multi-view image data mapped based on the view map is displayed in the pixel array. The number displayed on the subpixels of the pixel array is the view image number indicating which view image is in the multi-view image. For example, '1' represents a first view image, '2' represents a second view image, '3' represents a third view image, and '4' represents a fourth view image. The multi-view image data shown in FIG. 6 is an example of 9-view image data, but is not limited thereto. For example, multi-view image data may be N (N is a positive integer of 4 or more) image data.

The lenticular lens (lens) is disposed in an inclined form with a first angle (θ) with respect to the longitudinal direction (y-axis direction) of the sub-pixel (P), and the sub-pixel (P) of the lenticular lens (lens) The horizontal width (w) along the transverse direction (x-axis direction) of can be set to an integer multiple of the sub-pixel (P). That is, in the stereoscopic image display device to which the view map data according to the present invention is applied, the lenticular lens (lens) may be disposed inclined at a first angle (θ) with respect to the longitudinal direction of the sub-pixel (P).

In this configuration, if the lenticular lens is disposed at an angle different from the first angle θ based on the longitudinal direction of the sub-pixel P, it can be judged as a mis-alignment state. You can. The present invention determines the level of mis-alignment according to the degree to which the actual lenticular lens is tilted relative to the first angle (θ) and generates different view map data to provide a real stereoscopic image display device. The effect of improving image quality can be achieved by providing optimal view map data according to the characteristics of .

Figure 7 is a schematic block diagram of the configuration of the view map data generating device 100 of the present invention. The control block shown in FIG. 7 is an exemplary configuration for understanding the present invention. The functions of each block can be implemented in a more subdivided or integrated form, and the functions performed in each block include hardware, software, and Or they can be implemented in a combination form.

Referring to FIG. 7, the view map data generating device 100 receives test results from an inspection device that tests the performance of a multi-view autostereoscopic image display device and includes an error determination unit ( 140) and a view map data calculation unit that generates view map data according to the mis-alignment level determined by the error determination unit 140 and stores the view map data in the corresponding multi-view glasses-free stereoscopic image display device. It may include (120).

The inspection device can display an inspection screen on the video display device and then take pictures to check for mis-alignment errors in the video display device. The inspection screen can be set to various screens, such as a black screen, a white screen, a screen for each view, and a specific image screen. The inspection device may provide the captured screen image of the video display device to the error determination unit 140.

The error determination unit 140 may determine the error level by comparing the inspection screen image of the video display device received from the inspection device with a preset reference screen image. The reference screen image may include pre-photographed and stored screens displayed according to the misalignment level of the video display device. For example, as shown in FIG. 8, the alignment error level can be set from 1 to N, and the reference screen image displayed at each error level can be stored together. The number of error levels can be set according to the camera's shooting ability, the performance of the error judgment system, etc.

The view map data calculation unit 120 may generate view map data according to the error level determined by the error determination unit 140. The view map data calculation unit 120 calculates the view map data according to the misalignment level determined by the error determination unit 140, and stores the view map data generated as a result of the calculation in the multi-view stereoscopic image display device to be inspected. .

Here, the view map data calculation unit 120 may generate one line of view map data according to the following [Equation 1].

m: Number of subpixel horizontal equal parts

n: Number of pixels selected from equal subpixels

x: horizontal pixel index

Hor: Total number of subpixels in the horizontal direction

N: Number of designed view maps

f(x): View data of 1 line in the X direction

In [Equation 1], m/n means the number of horizontal subpixels (m)/the number of pixels (n) selected from the equally divided subpixels. Since subpixels are usually set to three, R, G, and B, m/n can be set to a multiple that satisfies 3/1. In this specification, the process of generating view map data by setting m/n to 9000/3000 for non-defective products and increasing the value of n by 1 as the error level increases will be described. For example, if misalignment occurs in the range of 0.001 degrees, the value of m is set to 3001, and if misalignment occurs in the range of 0.002 degrees, m is set to 3002 to generate view map data. Therefore, as the error level increases, m/n becomes smaller and the size of the x value at which Mod (remainder divided by N) loses regularity becomes smaller.

According to [Equation 1], in the case of a good product with no misalignment, the view data is regularly repeated N, which is the number of designed view maps. On the other hand, as the error level increases, m/n becomes smaller and the size of the x value at which Mod (the remainder divided by N) loses regularity becomes smaller. Accordingly, the pattern of regularly repeating N pieces of view data loses its regularity more quickly, resulting in more correction of the view data.

Afterwards, the view map index selected in the horizontal direction calculated in [Equation 1] can be substituted into the following [Equation 2] to generate view map data applied to the entire screen.

j: vertical pixel index

Ver: Total number of pixels in vertical direction

[Equation 2] generates vertical view map data based on the previously calculated f(i), that is, the view data generation value of 1 line in the X direction.

Figure 9 is a flowchart of a method for generating view map data according to an embodiment of the present invention.

The error determination unit 140 determines whether misalignment has occurred based on the inspection results of the image display device (S110). The decision result of the error determination unit 140 may be provided to the view map data calculation unit 120.

The view map data calculation unit 120 may store the reference view map data when it is determined that the product is a good product with no misalignment (S115).

On the other hand, the error determination unit 140, which determines that misalignment has occurred, determines the level of misalignment (S120). Here, the method for determining the level of misalignment can be determined according to the degree of coincidence by comparing the screen image of the actually captured video display device with the image of the previously stored reference screen. The decision result of the error determination unit 140 may be provided to the view map data calculation unit 120.

The view map data calculation unit 120 calculates the view map index of one line in the X direction using a preset formula according to the determination result (S130).

When the view map index of one line in the

When the view map data according to the misalignment level is completed, the corrected view map data is stored in the corresponding video display device (S150).

Figures 10 to 15 are diagrams showing the generation results of view map data calculated by applying the present invention, showing the results of calculating the view data (fx) of one line in the X direction using [Equation 1].

Figures 10 to 12 show the results of view map data generation for each misalignment level when 7-view technology is applied. Figure 10 shows the view map data generation results stored in the case of a good product without misalignment, Figure 11 shows the view map data generation generated when the misaligned angle is 0.001 degrees, and Figure 12 shows the view map data generated when the misaligned angle is 0.002 degrees. This is an example of the result.

Referring to FIG. 10, when misalignment does not occur, the number of subpixels in the horizontal direction (m) and the number of pixels (n) selected from the divided subpixels are set to 9000/3000. And, since the 7-view map is applied, N=7 is set.

m/n=9000/3000=3, and as x increases by 1, the sigma value of the total number of subpixels (Hor) in the horizontal direction also increases regularly. Therefore, the remainder (Mod) value when divided by N = 7 also repeats the seven patterns of "1, 4, 7, 3, 6, 2".

Referring to FIG. 11, when the misaligned angle is 0.001 degrees, n=3001 in [Equation 1] can be set.

Therefore, since m/n=9000/3001, the pixel index in the is calculated.

If m/n = 9000/3001 in [Equation 1] is substituted and N is calculated by substituting 7, the values of pixels “1002” and “1003” in the X direction are as follows.

If m/n=9000/3000, the view map data calculated from the 1002nd pixel according to [Equation 1] is "1, 4, 7, 3, 6, 2, 5", which is the previous view map data pattern. This is calculated by repetition. However, when m/n=9000/3001 is set by misalignment, the view map data calculated from the 1002nd pixel according to [Equation 1] is "7, 3, 6, 2, 5, 1, 4". It is corrected.

Referring to FIG. 12, when the misaligned angle is 0.002 degrees, n=3002 in [Equation 1] can be set.

Therefore, since m/n=9000/3002, the pixel index in the is calculated.

Substituting m/n = 9000/3002 in [Equation 1] and calculating N by substituting 7, the values of pixels “502” and “503” in the X direction are as follows.

If m/n = 9000/3000, the view map data calculated from the 502nd pixel according to [Equation 1] is “6, 2, 5”, which is calculated as a repetition of the previous view map data pattern. However, when m/n=9000/3002 is set by misalignment, the view map data calculated from the 502nd pixel according to [Equation 1] is corrected to “5, 1, 4”.

As confirmed through the above calculation results, when misalignment of 0.001 degrees occurs, correction starts from the 1002nd pixel, and when misalignment increases to 0.002 degrees, correction starts from the 502nd pixel. In other words, it can be seen that the more severe the misalignment, the more correction data is generated.

In addition, by applying [Equation 1] presented by the present invention, it is possible to prevent steps from occurring in specific lines because the view map data is corrected with the value calculated by the equation rather than simply repeating the specific pattern. , it is possible to correct misalignment patterns in the horizontal or vertical directions.

Figures 13 to 15 show the results of view map data generation for each misalignment level when 5-view technology is applied. Figure 13 shows the view map data generation results stored in the case of a good product without misalignment, Figure 14 shows the view map data generation generated when the misaligned angle is 0.001 degrees, and Figure 15 shows the view map data generated when the misaligned angle is 0.002 degrees. This is an example of the result.

Referring to FIG. 13, when misalignment does not occur, the number of subpixels in the horizontal direction (m) and the number of pixels (n) selected from the divided subpixels are set to 9000/3000. And, since a 5-view map is applied, N=5 is set.

m/n=9000/3000=3, and as x increases by 1, the sigma value of the total number of subpixels (Hor) in the horizontal direction also increases regularly. Therefore, the remainder (Mod) value when divided by N = 5 also repeats the five patterns of "1, 4, 2, 5, 3".

Referring to FIG. 14, when the misaligned angle is 0.001 degrees, n=3001 in [Equation 1] can be set.

Therefore, since m/n=9000/3001, the pixel index in the do.

If m/n=9000/3001 in [Equation 1] is substituted and N is calculated by substituting 5, the values of pixels “1002” and “1003” in the X direction are as follows.

If m/n = 9000/3000, the view map data calculated from the 1002nd pixel according to [Equation 1] is "4, 2, 5, 3", which is calculated as a repetition of the previous view map data pattern. . However, when m/n=9000/3001 is set by misalignment, the view map data calculated from the 1002nd pixel according to [Equation 1] is corrected to “3, 1, 4, 2”.

Referring to FIG. 15, when the misaligned angle is 0.002 degrees, n=3002 in [Equation 1] can be set.

Therefore, since m/n=9000/3002, the pixel index in the do.

Substituting m/n = 9000/3002 in [Equation 1] and calculating N by substituting 7, the values of pixels “502” and “503” in the X direction are as follows.

If m/n = 9000/3000, the view map data calculated from the 502nd pixel according to [Equation 1] is "4, 2, 5, 3", which is calculated as a repetition of the previous view map data pattern. . However, when m/n=9000/3002 is set by misalignment, the view map data calculated from the 502nd pixel according to [Equation 1] is corrected to “3, 1, 4, 2”.

As confirmed through the above calculation results, when misalignment of 0.001 degrees occurs, correction starts from the 1002nd pixel, and when misalignment increases to 0.002 degrees, correction starts from the 502nd pixel. In other words, it can be seen that the more severe the misalignment, the more correction data is generated.

In addition, by applying [Equation 1] presented by the present invention, it is possible to prevent steps from occurring in specific lines because the view map data is corrected with the value calculated by the equation rather than simply repeating the specific pattern. , it is possible to correct misalignment patterns in the horizontal or vertical directions.

Figure 16 is a block diagram showing a stereoscopic image display system using view map data according to an embodiment of the present invention.

Referring to FIG. 16, it includes a display panel 10, display panel drivers 12 and 13, a lenticular lens (LENS), a timing controller 201, a data formatter 200, and a host system 110. do.

The three-dimensional image display system of the present invention includes a liquid crystal display (LCD), a field emission display (FED), a plasma display panel (PDP), and an organic light emitting diode display (Organic Light). It can be implemented based on flat panel display devices such as Emitting Display (OLED) and Electrophoresis (EPD). This multi-view glasses-free stereoscopic image display device displays 3D image data in multi-view format.

The display panel 10 includes a pixel array (PIX) in which data lines 15 and gate lines (or scan lines) 13 are orthogonal and pixels are arranged in a matrix form. Each pixel may include subpixels of different colors for color implementation. Pixel array (PIX) displays 3D image data in multi-view format.

The display panel drivers 12 and 13 include a data driver circuit 12 for supplying data voltages of a 3D image to the data lines 15 of the display panel 10, and gate lines 16 of the display panel 10. ) and a gate driving circuit 13 for sequentially supplying gate pulses (or scan pulses). The display panel drivers 12 and 13 spatially distribute and write 3D image data input as multi-view format data to the pixels of the display panel 10.

The data driving circuit 12 converts digital video data input from the timing controller 201 into an analog gamma voltage, generates data voltages, and supplies the data voltages to the data lines 15 of the display panel 10. The gate driving circuit 13 supplies a gate pulse (or scan pulse) synchronized with the data voltage supplied to the data lines 15 to the gate lines 16 under the control of the timing controller 201, and the gate pulse Shift sequentially.

The 3D optical element 20 may be implemented as a lenticular lens (LENS). A lenticular lens (LENS) separates the optical axes of left-eye image data and right-eye image data of 3D image data.

The timing controller 201 supplies multi-view format data, including image data input from the data formatter 200, to the data driving circuit 12. The timing controller 201 receives timing signals such as a vertical synchronization signal, a horizontal synchronization signal, a data enable signal, and a main clock input from the host system 100 in synchronization with the digital video data (RGB) of the input image. The timing controller 201 controls the operation timing of the display panel drivers 12 and 13 using the received timing signal and generates timing control signals to synchronize the operation timing of the driver units. The timing control signals include a source timing control signal (DDC) for controlling the operation timing of the data driving circuit 12, a gate timing control signal (GDC) for controlling the operation timing of the gate driving circuit 13, and the like.

The data formatter 200 maps the pixel data of the multi-view image input from the host system 100 based on the view map data corrected according to the misalignment and transmits it to the timing controller 201.

The host system 100 may be implemented as any one of a television (TV) system, a set-top box, a navigation system, a DVD player, a Blu-ray player, a personal computer (PC), a home theater system, and a phone system. The host system 100 can convert the digital video data of the input image into a format suitable for the resolution of the display panel (PNL, 100) using a scaler and transmit a timing signal along with the data to the timing controller 201. there is.

Through the above-described content, those skilled in the art will be able to see that various changes and modifications can be made without departing from the technical idea of the present invention. Therefore, the technical scope of the present invention should not be limited to what is described in the detailed description of the specification, but should be defined by the scope of the patent claims.

100: View map data generation device 120: View map data calculation unit
140: error determination unit

Claims (8)

Determining the level of mis-alignment between pixels of a multi-view glasses-free stereoscopic image display device and a lenticular lens;
calculating view data of one line in the X direction of the view map data by applying a constant set according to the determined misalignment level; and
generating view map data by calculating Y-direction view data of the view map data based on the view data of one line in the X-direction;
Including,
The step of calculating the view data of one line in the A view map data generation method characterized in that the view data is calculated based on a ratio (m/n).
According to paragraph 1,
The step of calculating the view data of one line in the X direction of the view map data is a step of calculating the ratio (m/n) by substituting the following equation.

m: Number of subpixel horizontal equal parts
n: Number of pixels selected from equal subpixels
x: horizontal pixel index
Hor: Total number of subpixels in the horizontal direction
N: Number of designed view maps
f(x): View data of 1 line in the X direction
According to paragraph 2,
The step of calculating the Y-direction view data and generating the corrected view map data includes calculating the view data of one line in the X-direction by substituting the following equation.

j: vertical pixel index
Ver: Total number of pixels in vertical direction
According to paragraph 1,
The step of determining the level of misalignment is,
Comparing the reference screen image stored according to the misalignment level with the actually captured inspection screen image of the multi-view glasses-free stereoscopic image display device; and
determining the misalignment level set in the reference screen image with the highest similarity as a result of comparison as the misalignment level of the multi-view glasses-free stereoscopic image display device;
A view map data generation method comprising:
An error determination unit that determines the level of mis-alignment between the pixels of the multi-view glasses-free stereoscopic image display device and the lenticular lens; and
A constant set according to the determined misalignment level is applied to calculate view data of one line in the X direction of the view map data, and view data in the Y direction of the view map data based on the view data of one line in the X direction. It includes a view map data operation unit that calculates and generates view map data,
The view map data calculation unit,
View map data that calculates the view data based on the ratio (m/n) of the number of horizontal equal parts (m) of subpixels determined according to the misalignment level and the number (n) of pixels selected from the divided subpixels. Generating device.
According to clause 5,
The view map data calculation unit,
A view map data generating device, characterized in that the ratio (m/n) is calculated by substituting the following equation.

m: Number of subpixel horizontal equal parts
n: Number of pixels selected from equal subpixels
x: horizontal pixel index
Hor: Total number of subpixels in the horizontal direction
N: Number of designed view maps
f(x): View data of 1 line in the X direction
According to clause 6,
The view map data calculation unit,
A view map data generating device, characterized in that the step of calculating the view data of the 1 line in the X direction by substituting the following equation.

j: vertical pixel index
Ver: Total number of pixels in vertical direction
According to clause 5,
The error determination unit,
By comparing the reference screen image stored according to the misalignment level with the actually captured inspection screen image of the multi-view glasses-free stereoscopic image display device, the misalignment level set for the reference screen image with the highest similarity as a result of the comparison is set to the multi-view screen image. A view map data generating device characterized in that the misalignment level of the view glasses-free stereoscopic image display device is determined.