KR100263935B1 - Apparatus and method for converting 2-d video sequence to 3-d video using conversion of motional disparity to vertical disparity - Google Patents

Abstract

PURPOSE: A three dimensional image converting apparatus and method of a two dimensional continuous image is provided to produce a three dimensional image having a depth by an area of an image by converting a motion of a two dimensional image into a horizontal time difference to produce a new image. CONSTITUTION: A block motion measuring section(330) measures a motion vector with respect to each block of a current image which is divided into a block unit having a predetermined size. A horizontal time difference generator(340) obtains a horizontal time difference from a motion vector of each block according to a motion property of the current image. An image generator(350) moves each block in a horizontal direction according to each horizontal time difference to generate a combined image corresponding to the current image. An output section displays a three dimensional image having the current image and the combined image.

Description

3D image conversion device and method of 2D continuous image using transformation of motion parallax into horizontal parallax

The present invention relates to an apparatus and method for generating a 3D image, and more particularly, to an apparatus and method for converting a 2D continuous image to a 3D image using a motion of a continuous 2D image.

1 is a flowchart illustrating a conventional 3D image generating method using a correction time difference.

As one of the conventional three-dimensional image generation methods, there is a method using a modified time difference (MTD) developed by Sanyo Electric Co., Ltd., Japan. Referring briefly to FIG. 1, first, a moving region is extracted from a continuous two-dimensional image (step 100). The movement speed and direction of the extracted region are extracted (step 110). Based on the movement speed and the direction of the current image, a delay direction and a delay time are determined from a previous image frame (step 120). According to the determined delay direction and the delay time, it is determined in which eye the delayed image and the current image are to be respectively displayed in the left and right eyes of the person (step 130).

FIG. 2 is a conceptual diagram illustrating a process of determining a left / right image in the method illustrated in FIG. 1. Referring to FIG. 2, it is a process of determining a left / right image when a camera for photographing a continuous two-dimensional image is fixed and an object (■) in the image is moving. According to the conventional method using the corrected time difference, as shown in FIG. 2, a binocular disparity is provided to a person by showing a time delayed image in the left eye. On the other hand, when the object is moving to the left, the original image is shown to the left eye and the time-delayed image is displayed to the right eye, thereby providing a binocular disparity opposite to the above.

The conventional three-dimensional image generation method using the above-described correction time difference has the following problems.

First, since one of the previous frames is selected as the delayed image based only on the motion information of the original image, another depth possessed by each area of the original image is ignored. By ignoring the different depths possessed by the regions as described above, there is no depth when viewing stereoscopic images. For example, a three-dimensional effect may be sensed for a moving object, but a three-dimensional feeling may not be felt for an object having a small movement such as a background of a screen.

Second, when the motion of an object has a vertical component between the original image and the delayed image, if a three-dimensional image is generated by a conventional method using a correction time difference, eye fatigue due to inconsistency with the human visual structure that obtains a sense of depth in horizontal parallax There is a problem that occurs.

Third, even when a frame is selected as a delayed image from a plurality of previous frames when the amount of motion of the object in the original image is very large, the limitation of human parallax recognition is large because the stereoscopic image generated from the original image and the delayed image is large. There is a problem outside.

The technical problem to be achieved by the present invention is to measure the motion of the two-dimensional image, and then convert to horizontal parallax according to the movement characteristics to generate a new image, having a sense of depth for each area of the image, the movement of the object in the original image is a vertical component 3D image of 2D continuous image using transformation of horizontal parallax of motion parallax which produces natural 3D image and generates 3D image that can be recognized as human parallax even if the motion of object in the original image is very large To provide an inverter.

Another object of the present invention is to provide a 3D image conversion method performed by the 3D image conversion apparatus.

1 is a flowchart illustrating a conventional 3D image generating method using a correction time difference.

FIG. 2 is a conceptual diagram illustrating a process of determining a left / right image in the method illustrated in FIG. 1.

3 is a block diagram of a three-dimensional image conversion apparatus of a two-dimensional continuous image according to the present invention.

4 is a flowchart illustrating a 3D image conversion method of a 2D continuous image according to the present invention.

5 (a) and (b) are diagrams conceptually showing the principle of binocular parallax.

6 (a) and (b) are conceptual diagrams for explaining a horizontal movement process of a block in the method shown in FIG.

In order to achieve the above object, a three-dimensional image conversion apparatus of a two-dimensional continuous image according to the present invention for converting a continuous two-dimensional image into a three-dimensional image, for each block of the current image divided by a block unit of a predetermined size Block motion measurement unit for measuring motion vectors using image frames, Horizontal parallax generator for obtaining horizontal parallaxes from the motion vectors of each block according to the motion characteristics of the current image, Moving each block in the horizontal direction according to each horizontal parallax It is preferable that the image generating unit for generating a composite image corresponding to the current image and an output unit for displaying a three-dimensional image consisting of the current image and the composite image.

In order to achieve the above object, the method for converting a two-dimensional continuous image according to the present invention for converting a continuous two-dimensional image into a three-dimensional image, (a) dividing the input current image into blocks of a predetermined size (B) measuring a motion vector for each block of the current image using a previous image frame, (c) obtaining horizontal parallax from the motion vector of each block according to the motion characteristics of the current image, (d (B) generating a composite image corresponding to the current image by moving each block in a horizontal direction according to each horizontal parallax, and (e) displaying a three-dimensional image composed of the current image and the composite image. .

Hereinafter, with reference to the accompanying drawings the configuration and operation of the three-dimensional image conversion apparatus for a two-dimensional continuous image according to the present invention will be described as follows.

3 is a block diagram of a three-dimensional image conversion apparatus of a two-dimensional continuous image according to the present invention, which includes an analog-to-digital converter (ADC) 300, an image block unit 310, a previous frame storage unit 320, and block motions. The measuring unit 330, the horizontal parallax generating unit 340, the composite image generating unit 350, the left and right image determining unit 360 as output units, and the first and second digital-to-analog converters (DACs) 372 and 374. It is composed of

The horizontal parallax generating unit 340 includes a horizontal parallax converting unit 342, a horizontal parallax adjusting unit 344, and a motion characteristic determiner 346, and the composite image generating unit 350 includes a block horizontal moving unit. 352, a block synthesis section 354, and an interpolation section 356.

The present invention utilizes a two-dimensional continuous image taken with a monocular video camera that allows viewing of a stereoscopic image through a video reproducing apparatus such as a TV, a VCR, a CD, an HDTV, and a DVD without using two cameras, a stereoscopic camera. 3D image generation technology. The three-dimensional image conversion apparatus for a two-dimensional continuous image according to the present invention measures a motion vector between two consecutive images in a two-dimensional continuous image photographed by a monocular video camera, and then generates horizontal parallax therefrom, and horizontal parallax from the original image. By generating a new image moved in the horizontal direction according to the three-dimensional image consisting of the original image and the new image.

Referring to FIG. 3, the analog-to-digital converter 310 inputs a continuous two-dimensional image captured by a monocular video camera through an input terminal IN, and converts an analog two-dimensional image signal into a digital signal. The image block unit 320 divides the current image converted into a digital signal into blocks of a predetermined size. Here, the predetermined size is n × n pixel size, where n is preferably 4 or 8. As such, the reason for blocking the image is to estimate the motion by distinguishing the main object having motion in the image and the background with little motion. The previous frame storage 320 stores a previous image frame of the current image blocked by the image block 310.

The block motion measuring unit 330 inputs the current image blocked from the image block unit 310, and inputs a previous image frame from the previous frame storage unit 320. The block motion estimator 330 measures the amount and direction of the motion, that is, the motion vector, for each block of the current image divided into blocks of a predetermined size, using each corresponding block of the previous image frame.

The horizontal parallax generating unit 340 inputs the current image in which the motion vectors of each block are measured by the block motion measuring unit 330, and obtains horizontal parallax from the motion vectors of each block according to the motion characteristics of the current image.

In detail, the horizontal parallax converter 342 converts the motion vector of each block measured by the block motion measurer 330 into a parallax value. The present invention uses a simple transformation method that calculates the magnitude of the motion vector and regards the calculated value as a parallax value. Here, the parallax value corresponds to a horizontal parallax caused by two images when the synthesized image to be generated later and the current image are displayed as a 3D image in pairs.

The horizontal parallax adjustment unit 344 adjusts the horizontal parallax of each block converted by the horizontal parallax conversion unit 342 in response to a predetermined control signal. The reason for adjusting the horizontal parallax as described above is to generate a three-dimensional image recognizable as human parallax by adjusting the horizontal parallax according to the movement of the camera photographing the current image and the movement of the main object in the current image.

In detail, the horizontal parallax adjusting unit 344 subtracts the horizontal parallax from the maximum horizontal parallax value in response to a predetermined control signal, and outputs the subtracted result as the horizontal parallax of each block, or in the horizontal parallax converting unit 342. Outputs the horizontal parallax output as it is. Here, the maximum horizontal parallax value is a value determined by the block motion measurement unit 330. In addition, the horizontal parallax adjustment unit 344 scales the horizontal parallax of each block so as not to exceed a predetermined maximum parallax value before adjusting the horizontal parallax.

The motion characteristic determiner 346 determines the motion characteristic of the current image from the motion vectors of each block measured by the block motion measurer 330, and generates the control signal according to the determined result. Specifically, the motion vector of each block is analyzed to compare the magnitude of motion of the current image with a predetermined reference value, and the control signal is generated when the total motion is larger than the reference value.

Here, the predetermined reference value represents the magnitude of the total motion when the camera that captured the current image moves and the main object in the current image moves. The movement of the camera can be seen that the background moves in the image, so that when the background and the main object move in the image, there is almost no overall movement. Therefore, at this time, the horizontal parallax adjusting unit 344 outputs the horizontal parallax output from the horizontal parallax converting unit 342 as it is, and otherwise outputs a value subtracted from the maximum horizontal parallax value.

The image generator 350 inputs the current image having the horizontal parallax of each block in the horizontal parallax generator 340, and moves each block in the horizontal direction according to the horizontal parallax to produce a composite image corresponding to the current image. Create

Specifically, the block horizontal moving unit 352 moves the positions of all blocks in the current image in the right horizontal direction by the horizontal parallax of each block. The block synthesizing unit 354 synthesizes each block moved by the block horizontal moving unit 352 to generate a synthesized image. The synthesized image interpolator 356 interpolates an area not filled by each block of the current image in the synthesized image generated by the block synthesizer 354.

The left / right image determination unit 360 corresponding to the output unit inputs a composite image from the image generating unit 350, inputs a current image from the analog-to-digital converter 300, and includes a current image and a composite image. Display the 3D image. At this time, the left / right image determination unit 360 outputs one of the current image and the composite image as the left image signal, and outputs the other as the right image signal. These signals are converted into analog video signals via first and second digital-to-analog converters 372 and 374, respectively, and displayed through output terminals OUT1 and OUT2, where the left video signal is displayed in the left eye of a person and the right video. The signal is displayed in the human right eye.

Basically, the left / right image determiner 360 displays the current image in the left eye and the synthesized image in the right eye based on the positive parallax even during binocular disparity. Such a display method is not limited and may vary depending on a horizontal movement method and a direction to give a sense of depth when generating a composite image.

For example, when the block horizontal moving unit 352 moves the positions of all the blocks in the current image to the left horizontal direction by the horizontal parallax of each block, the current image and the synthesized image are displayed based on the negative parallax. However, when a large amount of negative parallax is given to increase the three-dimensional effect, it is difficult to display an image of the negative parallax for a long time because a person feels tired eyes. Therefore, the present invention is based on displaying with a positive parallax.

As described above, the present invention belongs to a stereo technology using binocular parallax. Here, the principle of binocular parallax will be briefly described to help the understanding of the present invention.

5 (a) and 5 (b) conceptually illustrate the principle of binocular parallax, and FIG. 5 (a) shows a positive parallax, and FIG. 5 (b) shows a negative parallax, respectively. In FIGS. 5A and 5B, when displaying two images on the screen, that is, an original image and a new image, each image is displayed on the right and left eyes of a person. The correspondence points a and a 'of the two images on the screen correspond to the positions b and b' of the two eyes, but the person perceives that the correspondence points of the two images are at the point P. That is, at this time, the position where a person actually recognizes that there is an object on the screen is the position of P in FIGS. 5 (a) and 5 (b). The position of the point P is similar in shape to the triangles ΔPaa 'and ΔPbb', and can be easily obtained by a proportional expression.

Therefore, when a three-dimensional image composed of two parallax images, that is, an original image and a new image, is displayed on the screen, a person can recognize a sense of depth. In the case of positive parallax as shown in FIG. 2 (a), the person perceives that the position of the point P is behind the screen, and in the case of negative parallax as shown in FIG. It is perceived as being ahead.

The new image generated in the present invention is an image moved in the horizontal direction by the horizontal parallax from the original image. Therefore, even if the motion of the object in the original image has a vertical component, a natural stereo image is generated.

4 is a flowchart illustrating a 3D image conversion method of a 2D continuous image according to the present invention. A method of converting a 3D image according to the present invention performed by the apparatus shown in FIG. 3 will be described with reference to FIG. 4.

First, the continuous two-dimensional image signal of the analog form is converted into a digital signal through the analog-to-digital converter 300 (step 400). Next, the current image converted into the digital signal is divided into block units having a predetermined size through the image block unit 310 (operation 410). Here, the predetermined size is n × n pixel size, where n is preferably 4 or 8.

After operation 410, using the previous image frame stored in the previous image frame storage 320, the amount and direction of the motion, ie, the motion vector, for each block of the current image is measured by the block motion measuring unit 330 ( Step 420). As a method for measuring a motion vector between two consecutive images, a known optical flow measurement method or a block matching method used in MPEG (Motion Picture Coding Experts Group) I, II is used. Also, for fast processing speed, a parallel heirarchical one-dimensional search (PHODS) method may be used even in a block matching method.

When the motion vector of each block of the current image is measured in operation 420, the horizontal parallax is obtained from the motion vector of each block according to the motion characteristics of the current image through the horizontal parallax generating unit 340 (operation 430).

Specifically, step 430 includes the following steps. First, the motion vector of each block measured in step 420 is converted into horizontal parallax through the horizontal parallax converter 342 (step 432). As a method of calculating the horizontal parallax, a simple method of calculating the magnitude of the motion vector and considering the calculated value as the horizontal parallax is used. Here, the horizontal parallax corresponds to a parallax caused by two images when the synthesized image to be generated later and the current image are displayed as a 3D image in pairs. Equation 1 shows a calculation equation for obtaining the horizontal parallax (px) of each block.

As in Equation 1, the horizontal parallax (px) is the magnitude of the motion vector (V _x , V _y ).

Next, the motion characteristic of the current image is determined by the motion characteristic determiner 346 (step 434). As a method of determining the motion characteristic, the motion vector of each block is analyzed to compare the magnitude of the entire motion of the current image with a predetermined reference value, and the result of the comparison is regarded as the motion characteristic of the current image. Here, the predetermined reference value indicates the magnitude of the entire movement when the camera capturing the current image moves and the main object in the current image moves.

Next, the horizontal parallax obtained in step 432 is adjusted according to the motion characteristic of the current image through the horizontal parallax adjustment unit 344 (step 436). The reason for adjusting the horizontal parallax as described above is to generate a three-dimensional image recognizable as human parallax by adjusting the parallax according to the movement of the camera photographing the current image and the movement of the main object in the current image. As a method of adjusting the horizontal parallax, if the entire motion of the current image is less than or equal to a predetermined reference value, the original horizontal parallax obtained in step 432 is maintained as it is, and if it is larger than the predetermined reference value, the horizontal parallax obtained in step 432 is maximized. Subtract from the horizontal parallax and replace the subtracted result as the horizontal parallax of each block.

Here, the maximum horizontal parallax is a value determined in step 420. Further, before adjusting the horizontal parallax in step 436, the horizontal parallax of each block is scaled so as not to exceed a predetermined maximum parallax value. Equation 2 shows a calculation formula for calculating the horizontal parallax (px) in the latter case.

In Equation 2, px _max is a value determined by the block motion measurement unit 330.

Referring back to FIG. 4, after operation 430, each block of the current image is moved in the horizontal direction according to each horizontal parallax through the image generator 350 to generate a composite image corresponding to the current image (operation 440). ).

Step 440 is specifically composed of the following steps. First, the positions of all blocks in the current image are moved to the right horizontal direction by the horizontal parallax of each block through the block horizontal moving unit 352 (step 442). The pixel data of all the blocks horizontally shifted in step 442 is synthesized through the block synthesizing unit 354 to generate a synthesized image (step 444).

6 (a) and 6 (b) are conceptual diagrams for explaining a block horizontal movement process in the method shown in FIG. 4, and FIG. 6 (a) shows that the horizontal parallax (px ₁ ) of the _first block B ₁ is moved. and then the horizontal parallax of the block (B ₂₎ which is moved (px ₂₎ block the horizontal parallax (px ₁₎ of the blocks (B ₁₎ which is moved first to block the horizontal movement in the case is large, Fig. 6 (b) than that following movement It represents (B ₂₎ to block the horizontal movement is less than the horizontal parallax (px _2), respectively. In the figure,? Denotes the position of the pixel in the block, and (B _i , px _i ) denote the horizontal parallax pxi of the i-th block. In addition, for the sake of simplicity, only one scan line is taken as an example when each block is composed of, e.g., 8 x 8 pixels.

In FIG. 6 (a), when the horizontal parallax (px ₁ ) is greater than the horizontal parallax (px ₂ ), for example, when the horizontal parallax (px ₁ ) is 3 and the horizontal parallax (px ₂ ) is 1, the block B ₁ All pixels of are first horizontally shifted by three. On the other hand, in the case of block B ₂ , it is horizontally moved by one from the third pixel. That is, in the case of block B ₂ , the first two pixels are not moved. In FIG. 6 (b), when the horizontal parallax (px ₁ ) is smaller than the horizontal parallax (px ₂ ), for example, when the horizontal parallax (px ₁ ) is 1 and the horizontal parallax (px ₂ ) is 3, the block B ₁ All pixels of and blocks B ₂ are horizontally shifted by 1 and 3, respectively. However, as shown in FIG. 6 (b), since the block B ₁ and the block B ₂ have different horizontal parallaxes, the block B ₁ is filled and then the three pixels are not filled after the block B ₁ is filled. (B ₂ ) is filled and empty pixels are generated.

After operation 444, an area not filled by each block in the synthesized image synthesized through the block horizontal movement process as described above is interpolated through the interpolator 356 (operation 446). That is, since each block of the current image is horizontally shifted according to different horizontal parallaxes, empty pixels may occur as shown in FIG. 6B. Various methods may be used as interpolation methods for assigning an appropriate pixel value to empty pixels, such as linear interpolation, bilinear interpolation, and weighted interpolation. In addition, the simplest method is to fill the empty pixels equally with the value of the pixels filled to the nearest left or right. Referring to FIG. 6B, the value of the pixel a ₁ or the pixel a ₂ is used. In this invention, this method with the smallest calculation amount was used.

Referring back to FIG. 4, after step 440, a left / right image is determined by the left / right image determiner 360 to display a 3D image which is a pair of the current image and the synthesized image (450). step). One of the current image and the synthesized image is displayed in the left eye, and the other is displayed in the right eye, so that a person feels a three-dimensional effect by the principle of binocular disparity. Finally, since these images are digital signals, they are converted into an analog signal and displayed through the first and second digital-to-analog converters 372 and 374, respectively (step 460). For reference, in order to view the three-dimensional image displayed on the display means such as a monitor through the above-described process, the stereoscopic glasses synchronized with the three-dimensional image is also required.

The depth of the image is related to the amount of movement. When the camera is moving and the image is not moving, the amount of movement is inversely proportional to the depth of the image. Also, near objects move large and far objects move relatively small. When the camera is fixed and there is a moving object in the image, the near object moves fast and the far object moves slowly. In the present invention, when the left and right images are determined in operation 450 by applying the principle, the present invention is performed differently according to the positive parallax and the negative parallax.

As described above, the three-dimensional image conversion apparatus and method of the two-dimensional continuous image according to the present invention has a sense of depth for each region of the image, the movement of the camera and the vertical movement of the object in the image that cannot be solved by the conventional technology And even if a rapid movement occurs has a natural three-dimensional sense, there is an advantage to generate a three-dimensional image that can be recognized by human parallax.

In addition, the apparatus and method for converting a two-dimensional continuous image according to the present invention generates a three-dimensional image by using a two-dimensional image captured by a monocular video camera without using two cameras, that is, a three-dimensional camera. It is possible to watch stereoscopic images through image reproducing devices such as TV, VCR, DVD, HDTV, CD, etc., and it can be applied to medical field using endoscope and ultrasound to read stereoscopic images to improve diagnostic efficiency. In addition, there is an advantage that can be easily applied in many areas, including the entertainment field for creating three-dimensional animation.

Claims (17)

In the three-dimensional image conversion apparatus of a two-dimensional continuous image for converting a continuous two-dimensional image into a three-dimensional image, A block motion measuring unit for measuring a motion vector for each block of the current image divided into blocks of a predetermined size using a previous image frame; A horizontal parallax generating unit obtaining horizontal parallaxes from the motion vectors of the respective blocks according to the motion characteristics of the current image; An image generating unit for generating a composite image corresponding to the current image by moving the blocks in a horizontal direction according to each horizontal parallax; And And an output unit configured to display a three-dimensional image including the current image and the composite image. The method of claim 1, wherein the horizontal parallax generating unit, A horizontal parallax converter which converts the motion vector of each block measured by the block motion measuring unit into horizontal parallax; A horizontal parallax adjustment unit that adjusts the horizontal parallax converted by the horizontal parallax conversion unit in response to a predetermined control signal; And And a motion characteristic determiner configured to determine a motion characteristic of the current image from the motion vectors of the respective blocks, and to generate the control signal according to the determined result. The method of claim 2, wherein the horizontal parallax converter, And calculating the magnitude of the motion vector and considering the calculated value as the horizontal parallax. The method of claim 2, wherein the horizontal parallax adjustment unit, Outputting the horizontal parallax converted by the horizontal parallax converting unit as it is, or subtracting the horizontal parallax from the maximum horizontal parallax in response to the control signal, and outputting the subtracted result as the horizontal parallax of each block, And the maximum horizontal parallax is determined by the block motion measurement unit. The method of claim 2, wherein the movement characteristic determiner, Analyzing the motion vector of each block to compare the magnitude of the entire motion of the current image with a predetermined reference value, and generate the control signal when the total motion is greater than the reference value, And the predetermined reference value represents the magnitude of the total motion when the camera capturing the current image moves and the main object in the current image moves. The method of claim 1, wherein the image generating unit, A block horizontal moving unit which moves the positions of all the blocks in the current image in the right horizontal direction by the horizontal parallax of the respective blocks; And And a block synthesizing unit for synthesizing all the blocks moved by the block horizontal moving unit to generate the synthesized image. The method of claim 6, wherein the image generating unit, And a block interpolation unit which interpolates regions not filled by all the blocks in the synthesized image generated by the block synthesizing unit. The method of claim 1, wherein the output unit, A left / right image determination unit configured to output one of the current image and the composite image as a left image signal and output the other as a right image signal; And the left image signal is displayed in the left eye, and the right image signal is displayed in the right eye. The apparatus of claim 1, wherein the 3D image converter is An image block unit dividing the current image into block units having a predetermined size and outputting the divided image to the block motion measurement unit; And And a previous frame storage unit for storing the previous image frame and outputting the previous image frame to the block motion measurement unit. In the three-dimensional image conversion method of a two-dimensional continuous image for converting a continuous two-dimensional image to a three-dimensional image, (a) dividing the input current image into block units having a predetermined size; (b) measuring a motion vector for each block of the current image by using a previous image frame; (c) obtaining horizontal parallax from a motion vector of each block according to a motion characteristic of the current image; (d) generating a composite image corresponding to the current image by moving each block in a horizontal direction according to each horizontal parallax; And and (e) displaying a three-dimensional image composed of the current image and the composite image. The method of claim 10, wherein step (c) comprises: (c1) converting the motion vector of each block into horizontal parallax; (c2) determining a motion characteristic of the current image; And and (c3) adjusting the horizontal parallax according to the movement characteristic. The method of claim 11, wherein step (c1), Calculating a magnitude of the motion vector and obtaining the calculated value as the horizontal parallax. The method of claim 11, wherein step (c2), Analyzes the motion vector of each block, compares the magnitude of the entire motion of the current image with a predetermined reference value, and considers the result of the comparison as the motion characteristic, And wherein the predetermined reference value represents the magnitude of the total motion when the camera capturing the current image moves and the main object in the current image moves. The method of claim 13, wherein step (c3), Outputting the horizontal parallax obtained in the step (c1) as it is if the total motion of the current image is less than or equal to a predetermined reference value; And Subtracting the horizontal parallax from the maximum horizontal parallax if the value is larger than the predetermined reference value, and outputting the subtracted result as the horizontal parallax of each block, The maximum horizontal parallax is determined in the step (b) 3D image conversion method of a two-dimensional continuous image. The method of claim 10, wherein step (d) (d1) moving the positions of all the blocks in the current image in the right horizontal direction by the horizontal parallax of each of the blocks; And and (d2) synthesizing all moved blocks to generate the synthesized image. The method of claim 15, wherein step (d) And interpolating an area not filled by all the blocks in the composite image. The method of claim 12, wherein step (e) And displaying one of the current image and the synthesized image in the left eye and displaying the other in the right eye.

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