JP2013016921A - Image processing device, image processing method, and image processing program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a processing burden.SOLUTION: An image processing device according to an embodiment comprises first extraction means and first determination means. The first extraction means extracts a line of pixels in a parallel direction at a predetermined height from each of two items of partial image information obtained by dividing image information. The first determination means determines whether the image information is image information for stereoscopic display containing right-eye partial image information and left-eye partial image information, on the basis of a difference between the lines of two pixels extracted by the first extraction means.

Description

  Embodiments described herein relate generally to an image processing apparatus, an image processing method, and an image processing program.

  2. Description of the Related Art Conventionally, there are stereoscopic image display devices that can display images stereoscopically, so-called three-dimensional displays.

  In the three-dimensional display, for example, left and right parallax (horizontal parallax) is realized using a slit or a lenticular sheet (cylindrical lens array). A stereoscopic display can be realized by providing a right-eye image and a left-eye image to the respective eyes of the user using a three-dimensional display having such a configuration. When performing stereoscopic display on the three-dimensional display, it is necessary to perform processing corresponding to the three-dimensional display on the image data.

  For this purpose, the image data must be in a format that can be stereoscopically displayed. Examples of formats that can be stereoscopically displayed include a multicast method, a side-by-side method, a top-and-bottom method, a 2D + depth method, and a tile format method.

  In the prior art, in order to perform processing suitable for the format of the image data, a technique for determining whether or not the image data is in a stereoscopic display format such as a side-by-side format has been proposed.

JP 2010-68309 A

  However, in the prior art, in order to determine whether or not the image data is a side-by-side method, many of the image data included in the right-eye partial image data and the left-eye partial image data of the image data are included. It is necessary to add up the degree of similarity for the pixels. For this reason, the problem that the processing burden for determination is large has arisen.

  The present invention has been made in view of the above, and provides an image processing apparatus, an image processing method, and an image processing program that can reduce the processing burden when determining whether or not stereoscopic display is possible. .

  The image processing apparatus according to the embodiment includes a first extraction unit and a first determination unit. The first extraction unit extracts a line of pixels in the horizontal direction at a predetermined height from each of the two pieces of partial image information obtained by dividing the image information. In the first determination unit, the image information includes partial image information for the right eye and partial image information for the left eye based on a difference between the lines of the two pixels extracted by the first extraction unit. It is determined whether the image information is for stereoscopic display.

FIG. 1 is a diagram illustrating an example of a hardware configuration of the information processing apparatus according to the first embodiment. FIG. 2 is a partially enlarged perspective view illustrating the configuration of the stereoscopic image display unit according to the first embodiment. FIG. 3 is a diagram showing an example of image data showing one frame of side-by-side content. FIG. 4 is a diagram illustrating switching control between two-dimensional display and stereoscopic display in the display processing unit according to the first embodiment. FIG. 5 is a diagram illustrating pixel lines that are extracted by the information processing apparatus according to the first embodiment to determine whether the information processing apparatus is in the side-by-side format. FIG. 6 is a diagram showing an example of a screen for setting the detection accuracy of the stereoscopic display. FIG. 7 is a diagram for explaining determination by the horizontal line determination unit according to the first embodiment. FIG. 8 is a diagram illustrating the calculation of the shift of the shift calculation unit according to the first embodiment. FIG. 9 is a diagram illustrating determination by the vertical line determination unit according to the first embodiment. FIG. 10 is a flowchart illustrating a procedure of image data determination processing in the information processing apparatus according to the first embodiment. FIG. 11 is a flowchart illustrating a procedure of image data determination processing in the information processing apparatus according to the second embodiment.

(First embodiment)
A hardware configuration of the information processing apparatus 100 according to the first embodiment will be described. FIG. 1 is a diagram illustrating an example of a hardware configuration of the information processing apparatus 100 according to the present embodiment. As shown in FIG. 1, an information processing apparatus 100 includes a CPU (Central Processing Unit) 101, a ROM (Read Only Memory) 102, a RAM (Random Access Memory) 103, a communication I / F 104, an input device 105, and the like. The stereoscopic image display unit 106 and the storage unit 107 are connected via a bus 108 and have a hardware configuration using a normal computer.

  The ROM 102 stores various programs executed by the CPU 101, various setting information, and the like. A RAM 103 is a main storage device of the information processing apparatus 100 and functions as a work area of the CPU 101.

  The communication I / F 104 controls data communication with other information processing apparatuses and the like via a LAN, the Internet, or the like.

  The input device 105 is a device for operating the cursor displayed on the stereoscopic image display unit 106. In this embodiment, an example of operating the cursor will be described, but an operation object other than the cursor may be operated.

  The stereoscopic image display unit 106 is a display device having a stereoscopic image display specification capable of stereoscopically displaying an integral imaging (II) or integral photography (IP) image.

  As described above, the information processing apparatus 100 according to the present embodiment includes, as the stereoscopic image display unit 106, a PC equipped with an integral imaging (II) type or integral photography (IP) type naked-eye 3D-compatible panel. And

  FIG. 2 is a perspective view showing a partially enlarged configuration of the stereoscopic image display unit 106. As shown in FIG. 2, the stereoscopic image display unit 106 includes an image display element 201 having a plurality of color pixel dots arranged in a two-dimensional plane and capable of displaying a color image, and a direction of light emitted from the color pixel dots. By limiting, the light beam direction limiting element 202 is configured to limit the visible angle in the horizontal direction.

  The image display element 201 is preferably a so-called flat panel in which pixel dots are arranged in a two-dimensional matrix, rather than a CRT or projector, because the displacement of the color pixel dots in the screen greatly affects the light emission direction. Examples of such a display method include a non-light emitting liquid crystal panel (LCD), a light emitting plasma display panel (PDP), and an organic EL (electroluminescence) panel.

  The light direction limiting element 202 is a vertical lenticular lens having a generatrix in the vertical direction of the screen. The light beam direction limiting element 202 has a function of limiting the light output direction, and is also referred to as a parallax barrier or a parallax barrier. Note that the method for realizing the stereoscopic view is not limited to a method using a vertical lenticular lens, and any method may be used as long as it has a function of limiting the direction in which a light beam is output. Thereby, since a different light beam can be output to each of the user's left eye and right eye, stereoscopic vision can be realized.

  In the image display element 201, pixels with an aspect ratio of 3: 1 are arranged in a matrix in a straight line in the horizontal direction and the vertical direction, and each pixel has R (red) and G (green) in the horizontal direction in the same row. , B (blue) are alternately arranged, and R (red), B (blue), and G (green) are alternately arranged in the vertical direction in the same column. The vertical period of the pixel row is three times the horizontal period Pp of the pixel. With such a structure of the image display element 201, stereoscopic display that gives a plurality of parallaxes in the horizontal direction is possible.

  The storage unit 107 is an auxiliary storage device such as a hard disk drive (HDD) or a solid state drive (SSD), and stores an image processing program 110 executed by the CPU 101, various other programs, and various setting information. Furthermore, the storage unit 107 stores content capable of generating a parallax image described later.

  The image processing program 110 includes a setting unit 111, a dividing unit 112, a horizontal line extracting unit 113, a horizontal line determining unit 114, a deviation calculating unit 115, a vertical line extracting unit 116, a vertical line determining unit 117, A display processing unit 118.

  The CPU 101 expands the program stored in the ROM 102 or the storage unit 107 in the RAM 103 and executes it. The CPU 101 according to the present embodiment reads the image processing program 110 so that each configuration included in the image processing program 110 is realized as a software configuration on the RAM 103. Each realized software configuration executes processing for stereoscopically displaying content. In the present embodiment, the software configuration is not limited to the configuration shown in FIG. 1, and other configurations may be used.

  The display processing unit 118 performs various types of information display processing using the stereoscopic image display unit 106. The display processing unit 118 reads the content stored in the storage unit 107 and passes it to the stereoscopic image display unit 106. The content may be various display data such as moving image data and still image data.

  The content format (3D Format) is a side-by-side format that can be displayed by the information processing apparatus 100 and has a parallax with each other.

  FIG. 3 is a diagram showing an example of image data showing one frame of side-by-side content. As shown in FIG. 3, in the side-by-side method, a right-eye frame 301 and a left-eye frame 302 having parallax with each other are compressed in half in the horizontal direction and arranged side by side. This is configured as a single frame image 300.

  As described above, since the image data for stereoscopic display and the image data for two-dimensional display have different formats, the processing to be performed is also different. In the stereoscopic image display unit 106, different control is performed.

  FIG. 4 is a diagram for explaining switching control between the two-dimensional display 401 and the stereoscopic display 402. As shown in FIG. 4, the display processing unit 118 can switch between the two-dimensional display 401 and the stereoscopic display 402 by controlling the light direction limiting element 202 of the stereoscopic image display unit 106.

  In the present embodiment, the display processing unit 118 controls to suppress the polarization of light by the light direction limiting element 202. The light output from the image display element 201 passes through the light beam direction limiting element 202 as it is, and a two-dimensional display 401 can be realized. On the other hand, the display processing unit 118 controls the light direction limiting element 202 to polarize the light. Thereby, the light output from the image display element 201 is divided into the light for the right eye and the light for the left eye by the light direction limiting element 202, and the stereoscopic display 402 can be realized.

  The information processing apparatus 100 according to the present embodiment determines whether the image data is in side-by-side format, and determines whether to perform stereoscopic display based on the determination result.

  FIG. 5 is a diagram illustrating pixel lines that are extracted by the information processing apparatus 100 to determine whether the information processing apparatus 100 is in the side-by-side format. By the way, since the stereoscopic display is a stereoscopic display based on the parallax of both eyes, there is a shift in the horizontal direction (left-right direction) between the left-eye image data 505 and the right-eye image data 506. . In contrast, in principle, there is no deviation in the vertical direction between the left-eye image data 505 and the right-eye image data 506.

  Therefore, in the present embodiment, based on the fact that there is no deviation in the vertical direction, the pixel of the horizontal line 502 having a predetermined height h in the left-eye image data 505 and the predetermined value in the right-eye image data 506. The pixel of the horizontal line 504 having the height h is compared. Thereby, it is easy to determine whether the side-by-side format is used. The height h is different depending on the embodiment.

  Further, by comparing the pixels of the horizontal line 502 in the left-eye image data 505 with the pixels of the horizontal line 504 in the right-eye image data 506, the left-eye image data 505 and the right-eye image data 506 are compared. And the horizontal deviation width between them can be calculated. Therefore, in the present embodiment, the vertical line 501 of the left-eye image data width is compared with the vertical line 503 of the right-eye image data width in consideration of the shift width. It was decided to. As a result, it is possible to determine whether or not the image data is in side-by-side format with high accuracy while reducing the processing load.

  Note that the image data according to the present embodiment is an example of performing comparison or the like using luminance (Y) in the color space YUV format. However, the present invention is not limited to the YUV format, and may be another format such as an RGB format. In the present embodiment, the amount of comparison data can be reduced by performing processing using only luminance.

  Further, it may be determined whether or not the side-by-side format is used based on pixels of a plurality of lines instead of comparing pixels of one line as shown in FIG. In the present embodiment, the number of lines used for comparison can be changed by setting the detection accuracy of the stereoscopic display.

  Returning to FIG. 1, the setting unit 111 sets the detection accuracy of the stereoscopic display. The setting unit 111 sets the increase / decrease in the number of horizontal lines or vertical lines to be determined, and sets the increase / decrease in the pixels to be determined among the pixels included in each line. The detection accuracy of whether or not there is changeable.

  Note that the setting unit 111 of the information processing apparatus 100 according to the present embodiment can set the increase / decrease of the pixel to be determined among the pixels included in the horizontal line or the vertical line. For example, out of the pixels included in the horizontal line or vertical line, one pixel per 2 dots may be compared, 10% from both ends of the line is not compared, and the center 80% is compared. Also good.

  FIG. 6 is a diagram showing an example of a screen for setting the detection accuracy of the stereoscopic display. In the screen 601 illustrated in FIG. 6, the user can change the detection accuracy of the stereoscopic display by operating the slider 602 via the input device 105. For example, by increasing the detection accuracy with the slider 602, the determination by a plurality of lines is performed. On the other hand, by lowering the detection accuracy with the slider 602, it is possible to reduce the number of lines used for the determination and reduce the number of pixels to be determined among the pixels included in the line.

  Returning to FIG. 1, the dividing unit 112 divides the image data to be determined into two equal parts of left and right partial image data. As a result, when the image data is in the side-by-side format, it is divided into partial image data for the right eye and partial image data for the left eye.

  The horizontal line extraction unit 113 extracts pixels of a horizontal pixel line (hereinafter referred to as a horizontal line) at a height h from each of the two partial image data obtained by dividing the image data. Further, when the setting unit 111 has a high stereoscopic display detection accuracy, pixels of a plurality of lines are extracted from each of the partial image data. In the present embodiment, the luminance value of a pixel is extracted as a parameter indicating each pixel of the line.

  The horizontal line determination unit 114 determines whether the image is based on the difference between the horizontal line pixels of the left partial image data and the horizontal line pixels of the right partial image data extracted by the horizontal line extraction unit 113. It is determined whether or not the data is highly likely to be image data for stereoscopic display including partial image data for the right eye and partial image data for the left eye. In the present embodiment, when the similarity between the horizontal line pixels of the left partial image data and the horizontal line pixels of the right partial image data exceeds a predetermined threshold, the stereoscopic display It is determined that the possibility of image data is high.

  FIG. 7 is a diagram illustrating the determination by the horizontal line determination unit 114. A graph 701 in FIG. 7 shows a transition 703 of the luminance value of each pixel in the horizontal line extracted from the left partial image data, and a graph 702 in FIG. 7 shows each pixel in the horizontal line extracted from the right partial image data. A luminance value transition 704 is shown. And the horizontal line determination part 114 performs determination based on transition of these luminance values.

  By the way, when the image data is in a side-by-side format, the transition of the luminance value of each pixel in the horizontal line has a shift based on parallax between the right side and the left side. Specifically, the luminance transition 703 is shifted to the left, while the luminance transition 704 is shifted to the right. Therefore, the horizontal line determination unit 114 may perform determination between pixels on the horizontal line in consideration of this shift. Further, when the horizontal line extraction unit 113 extracts a plurality of horizontal line pixels from each partial image data, the horizontal line determination unit 114 determines the difference between the plurality of horizontal line pixels extracted from each of the partial image data. Based on the above, it is determined whether or not the image data can be stereoscopically displayed in the side-by-side format.

  In addition, the horizontal line extraction unit 113, in accordance with the setting performed by the setting unit 111, among a plurality of pixels on the horizontal line, a predetermined number of pixels (for example, pixels in the range of the center 80% or 1 in 2 dots) Number of pixels) may be extracted. In this case, the horizontal line determination unit 114 extracts a predetermined number of pixels extracted from each of the partial image data (for example, pixels in the range of the center 80% or one pixel in two dots). Based on the difference, it is determined whether or not the image data is likely to be side-by-side image data.

  In the present embodiment, when the horizontal line determination unit 114 determines that the image data is likely to be side-by-side format image data, in the present embodiment, comparison is also performed on pixels in the vertical line. However, there is a shift between the partial image data based on the parallax between the eyes. Therefore, the deviation calculation unit 115 calculates the deviation width between pixels of the horizontal line extracted by the horizontal line extraction unit 113.

  FIG. 8 is a diagram illustrating the calculation of the shift by the shift calculation unit 115. As shown in FIG. 8, the luminance value of each pixel included in the horizontal line 801 of the left partial image data is compared with the luminance value of each pixel included in the horizontal line 802 of the right partial image data. Calculate the width. In the example illustrated in FIG. 8, when the luminance value of the nth pixel in the horizontal line 801 matches the luminance value of the n−2th pixel in the horizontal line 802, the shift calculation unit 115 sets 2 dots as the shift width. calculate.

  When the vertical line extraction unit 116 determines that there is a high possibility of side-by-side format image data as the determination result of the horizontal line determination unit 114, the vertical line extraction unit 116 calculates the vertical pixel from each of the two partial image data. Pixels in a line (hereinafter, vertical line) are extracted. The vertical line extraction unit 116 according to the present embodiment extracts vertical line pixels from each of the two partial image data based on the shift width calculated by the shift calculation unit 115.

  The vertical line determination unit 117 determines whether the image data is side-by-side format image data that can be stereoscopically displayed based on the difference between the pixels of the vertical line extracted by the vertical line extraction unit 116. In the present embodiment, when the similarity between the vertical line pixel of the left partial image data and the vertical line pixel of the right partial image data exceeds a predetermined threshold, the stereoscopic display is displayed. It is determined that the possibility of image data is high. Note that the threshold value is set in accordance with the embodiment, and may be different from the threshold value used when determining the similarity of the pixels on the horizontal line.

  FIG. 9 is a diagram illustrating determination by the vertical line determination unit 117. A graph 901 in FIG. 9 shows transitions 911, 912, and 913 of the luminance values of the pixels on the vertical line for each predetermined dot interval in the left partial image data. Specifically, the transition 912 is the luminance value of the pixel of the vertical line at the center of the left image data, and the transition 911 is the luminance value of the pixel of the vertical line shifted to the left by a predetermined dot (for example, 2 dots) from the center. The transition 913 is a transition of the luminance value of the pixels on the vertical line shifted to the right by a predetermined dot (for example, 2 dots) from the center.

  A graph 902 shows transitions 921, 922, and 923 of the luminance values of the pixels on the vertical line for each predetermined dot interval in the right partial image data. Specifically, the transition 922 is the luminance value of the pixel of the vertical line at the center of the right image data, and the transition 921 is the luminance value of the pixel of the vertical line shifted to the left by a predetermined dot (for example, 2 dots) from the center. The transition 923 is a transition of the luminance value of the pixels on the vertical line shifted to the right by a predetermined dot (for example, 2 dots) from the center.

  When the shift calculation unit 115 calculates, for example, 2 dots as the shift width, the vertical line determination unit 117 shifts the luminance value transition 912 of the pixels in the vertical line of the left image data and the vertical shift of the right image data. The luminance value transition 923 of the pixel of the line is compared. In the example shown in FIG. 9, it is determined as the side-by-side format because they match.

  In the present embodiment, side-by-side image data can be detected with high accuracy by comparing the pixels of the vertical lines extracted based on the shift width in this way.

  In this embodiment, the shift width is calculated, but the shift width is not necessarily calculated. As a modified example, the vertical line extraction unit 116 extracts a plurality of vertical line pixels for each partial image data, and the vertical line determination unit 117 exceeds the threshold for all combinations of the extracted vertical line pixels. It is determined whether or not it is similar. And if the vertical line determination part 117 has exceeded the threshold value among all the combinations which performed determination, it will consider with a side-by-side format etc. In the example illustrated in FIG. 9, the vertical line extraction unit 116 according to the modified example performs pixel luminance value transitions 911, 912, and 913 in the vertical line of the right partial image data and pixels in the vertical line of the left partial image data. The luminance value transitions 921, 922, and 923 are extracted. Then, the vertical line extraction unit 116 determines the similarity for all combinations of the extracted transitions, and determines that the transition 912 and the transition 923 match each other, so that the side-by-side format is determined.

  Further, the vertical line extraction unit 116, in accordance with the setting performed by the setting unit 111, a plurality of predetermined pixels (for example, pixels in the range of the center 80% or one in two dots) in the vertical line. Pixel) may be extracted. In this case, the vertical line determination unit 117 extracts a predetermined number of pixels extracted from each of the partial image data (for example, a pixel in the range of the center 80 percent or one pixel in two dots). Based on the difference, it is determined whether the image data is in side-by-side format.

  Next, image data determination processing in the information processing apparatus 100 according to the present embodiment will be described. FIG. 10 is a flowchart illustrating the above-described processing procedure in the information processing apparatus 100 according to the present embodiment.

  First, the setting unit 111 acquires settings made by the user (step S1001). Next, the dividing unit 112 divides the image data into two equal parts of the left and right partial image data (step S1002).

  Next, the horizontal line extraction unit 113 extracts the pixels of the horizontal line in the horizontal direction with the height h from the left and right partial image data (step S1003). At that time, for step S1005, the horizontal line extraction unit 113 may extract pixels of a plurality of lines from each partial image data in advance. Furthermore, when the detection accuracy of the stereoscopic display is set to be low, the horizontal line extraction unit 113 may extract pixels at a predetermined location in the horizontal line, and reduce the determination process described later.

  Then, the horizontal line determination unit 114 determines whether or not the pixels of the horizontal line having the height h extracted from the left and right partial image data are equal to or greater than the threshold (step S1004).

  When it is determined that the horizontal line determination unit 114 does not match (step S1004: No), when the stereoscopic display detection accuracy is set high, the horizontal line extraction unit 113 extracts a plurality of pieces extracted from each partial image data. It is determined whether or not the pixels on the horizontal line are equal to or greater than the threshold (step S1005). Then, when the horizontal line determination unit 114 determines that it does not match the threshold value or more (step S1005: No), the display processing unit 118 performs a two-dimensional display process on the image data (step S1011). If the detection accuracy of the stereoscopic display is set low, the process may proceed to step S1011 without performing the process of step S1005.

  On the other hand, when the horizontal line determination unit 114 determines that the pixels of the horizontal line are equal to or greater than the threshold value (step S1004: Yes, step S1005: Yes), the deviation calculation unit 115 is based on the pixels of the horizontal line. Thus, the shift width between the partial image data is calculated (step S1006).

  Next, the vertical line extraction unit 116 extracts vertical vertical line pixels from the left and right partial image data in consideration of the calculated shift width (step S1007). In the present embodiment, the vertical line extraction unit 116 extracts the pixels of the center vertical line from the left partial image data, and the pixels of the vertical line from the position shifted from the center by the shift width are extracted from the right partial image data. Extract. Note that the extraction method is not limited to such a method, and any extraction method that considers the shift width may be used. Further, for step S1009, the vertical line extraction unit 116 may extract pixels of a plurality of lines from each partial image data in advance. Furthermore, when the detection accuracy of the stereoscopic display is set to be low, the vertical line extraction unit 116 may extract pixels at a predetermined portion of the vertical line, and reduce the determination process described later.

  Then, the vertical line determination unit 117 determines whether or not the pixels of the extracted vertical lines are equal to or greater than the threshold (step S1008).

  When it is determined that the vertical line determination unit 117 does not match the threshold value or more (step S1008: No), when the detection accuracy of the stereoscopic display is set high, the vertical line determination unit 117 further includes each part. It is determined whether or not the pixels of the plurality of vertical lines extracted from the image data are equal to or greater than the threshold (step S1009). If it is determined that they do not match the threshold value or more (step S1005: No), the display processing unit 118 performs two-dimensional display processing on the image data (step S1011). If the detection accuracy of the stereoscopic display is set low, the process may proceed to step S1011 without performing the process of step S1009.

  On the other hand, when the vertical line determination unit 117 determines that the vertical line pixels match the threshold value or more (step S1008: Yes, step S1009: Yes), the display processing unit 118 sets the image data as a side-by-side format. Then, a stereoscopic display process is performed (step S1010).

  With the processing procedure described above, it can be determined whether the image data is in a side-by-side format. Note that the processing procedure of FIG. 10 is shown as an example, and the determination between pixels on the horizontal line and the determination between pixels on the vertical line may be performed by other processing procedures.

  Further, in the information processing apparatus 100 according to the present embodiment, the number of extracted pixels in the vertical line or horizontal line to be extracted may be changed according to the setting or the like. Further, the number of vertical lines or horizontal lines to be extracted may be changed according to the setting or the like.

  In the information processing apparatus 100 according to the present embodiment, the detection accuracy is varied according to the setting of the setting unit 111. As a result, it is possible to respond to the user's request that it is better to switch quickly because there may be a false detection, or that the switching accuracy may be slow because switching may be slow.

  In the information processing apparatus 100 according to the present embodiment, the example in which it is determined whether or not the image data is in the side-by-side format (for stereoscopic display) by comparison using the luminance in the YUB format has been described. However, the present invention is not limited to the use of luminance for comparison, and any parameter that can be used for comparison of image data, such as hue, saturation, or brightness, may be used.

  In the information processing apparatus 100 according to the present embodiment, the detection accuracy of side-by-side image data can be improved by combining the determination based on the pixels of the horizontal line and the determination based on the pixels of the vertical line.

  Furthermore, the information processing apparatus 100 extracts the pixels of the vertical line to be determined in consideration of the shift width calculated by the shift calculation unit 115 when performing the determination based on the pixels of the vertical line. Thereby, the detection accuracy can be further improved.

(Second Embodiment)
In the first embodiment, the example of determining whether the image data is the side-by-side format by combining the comparison of the pixels of the horizontal line of the image data and the comparison of the pixels of the vertical line has been described. However, it is not limited to such a method. Therefore, in the second embodiment, an example in which the pixels in the horizontal line are compared will be described.

  FIG. 11 is a flowchart illustrating a procedure of the above-described processing in the information processing apparatus 100 according to the present embodiment. In the flowchart shown in FIG. 11, it is determined whether or not the pixels on the horizontal line are equal to or greater than the threshold value by the same processing as steps S1001 to S1005 in FIG. 10 (steps S1101 to S1105).

  When the horizontal line determination unit 114 determines that the pixels between the horizontal lines are equal to or greater than the threshold (step S1104: Yes, step S1105: Yes), the display processing unit 118 performs stereoscopic display on the image data. Processing is performed (step S1106).

  On the other hand, when the horizontal line determination unit 114 determines that the pixels of the plurality of horizontal lines do not match the threshold value or more (step S1105: No), the display processing unit 118 performs two-dimensional display processing on the image data. Is performed (step S1107).

  With the processing procedure described above, it can be determined whether the image data is in a side-by-side format. In the second embodiment, since it is determined whether or not the side-by-side format is used based on the determination result of the horizontal line, the processing load can be reduced as compared with the first embodiment. Note that the processing procedure in FIG. 11 is shown as an example, and the determination between pixels on the horizontal line may be performed by another processing procedure.

  As described above, according to the first to second embodiments, it is only necessary to determine whether or not the lines included in the image data are similar as compared with the comparison between the image data in the conventional side-by-side format. The processing burden in determining whether or not stereoscopic display is possible can be reduced.

  The image processing program executed by the information processing apparatus according to the above-described embodiment is a file in an installable or executable format, such as a CD-ROM, a flexible disk (FD), a CD-R, a DVD (Digital Versatile Disk), or the like. And recorded on a computer-readable recording medium.

  Further, the image processing program executed by the information processing apparatus according to the above-described embodiment may be stored on a computer connected to a network such as the Internet and provided by being downloaded via the network. The image processing program executed by the information processing apparatus according to the present embodiment may be provided or distributed via a network such as the Internet.

  In addition, the image processing program of the present embodiment may be provided by being incorporated in advance in a ROM or the like.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 100 ... Information processing apparatus 101 ... CPU, 102 ... ROM, 103 ... RAM, 104 ... Communication I / F, 105 ... Input device, 106 ... Stereoscopic image display part, 107 ... Memory | storage part, 108 ... Bus, 110 ... Image processing Program 111 111 Setting unit 112 Dividing unit 113 Horizontal line extracting unit 114 Horizontal line determining unit 115 Displacement calculating unit 116 Vertical line extracting unit 117 Vertical line determining unit 118 Display processing Part

Claims (8)

First extraction means for extracting a horizontal pixel line at a predetermined height from each of the two partial image information obtained by dividing the image information;
Based on the difference between the lines of the two pixels extracted by the first extraction means, the image information includes stereoscopic image information for the right eye and partial image information for the left eye. First determination means for determining whether or not the image information is,
An image processing apparatus comprising: As a determination result of the first determination means, when it is determined that the image information is for stereoscopic display, a second pixel line is extracted from each of the two pieces of partial image information. Extraction means of
Second determination means for determining whether the image information is image information for stereoscopic display based on a difference between the lines of the pixels extracted by the second extraction means;
The image processing apparatus according to claim 1, further comprising: As a determination result of the first determination unit, when it is determined that the image information is for stereoscopic display, a deviation width between lines of the two pixels extracted by the first extraction unit is calculated. A calculating means for calculating;
The second extraction unit extracts a line of pixels having a predetermined width from each of the two partial image information based on the shift width calculated by the calculation unit.
The image processing apparatus according to claim 2. The first extracting means extracts a plurality of horizontal pixel lines from each of the partial image information,
The first determination unit determines whether the image information is for stereoscopic display based on a difference between lines of the plurality of pixels extracted from each of the partial image information.
The image processing apparatus according to claim 1. The second extraction means extracts a plurality of vertical pixel lines from each of the partial image information,
The second determination unit determines whether the image information is for stereoscopic display based on a difference between lines of the plurality of pixels extracted from each of the partial image information.
The image processing apparatus according to claim 1. The first determination means extracts a plurality of predetermined pixels from the horizontal pixel line,
The first determination unit determines whether or not the image information is for stereoscopic display based on a difference between a plurality of predetermined pixels extracted from each of the partial image information. ,
The image processing apparatus according to claim 1. An image processing method executed by an image processing apparatus,
An extraction step in which the extraction means extracts a line of pixels in the horizontal direction at a predetermined height from each of the two pieces of partial image information obtained by dividing the image information;
Based on the difference between the lines of the two pixels extracted by the extraction unit by the determination unit, the image information includes stereoscopic image display information including right-eye partial image information and left-eye partial image information. A determination step of determining whether or not the image information is for,
An image processing method including: An extraction step of extracting a horizontal pixel line at a predetermined height from each of the two partial image information obtained by dividing the image information;
Based on the difference between the lines of the two pixels extracted by the extraction means, the image information includes stereoscopic image information including right-eye partial image information and left-eye partial image information. A determination step for determining whether or not
An image processing program for causing a computer to execute.

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