JP2013191957A - Video signal processing device, video signal processing method, and video signal processing program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a video signal processing device which, when generating an interpolation frame for a 2-3 pulldown converted frame packing type video signal, can restrain an increase in memory capacity in which the frame is temporarily stored as much as possible.SOLUTION: An index generation unit 17 generates index signals iL and iR which are used to identify the frame periods of left-eye and right-eye images. A write control unit 11 exerts control so that a left-eye image or a right-eye image frame is cyclically written into memory areas 141 to 143. A write area cyclic control unit 12 controls to enable or disable cyclic writes. If cyclic writes are disabled, the write control unit 11 exerts control so that the image frame is written into the same memory area. A read control unit 13 exerts control so that the left-eye image or the right-eye image frame written into the memory areas 141 to 143 is read out of memory.

Description

  The present invention relates to a video signal processing apparatus, a video signal processing method, and a video signal processing program for processing a video signal obtained by converting a film video having a frame rate of 24 Hz into a frame rate of 60 Hz by 2-3 pull down.

  A film image shot at a frame rate of 24 Hz is converted into a standard television signal having a frame rate of 60 Hz by a conversion process called 2-3 pull-down. When a film image with a frame rate of 24 Hz is converted into a video signal with a frame rate of 60 Hz by 2-3 pull-down, two or three identical frames of the film image are continuous. Therefore, the movement of the image is not smooth. This is called film judder.

  Therefore, in order to remove or reduce film judder, interpolated frames are generated by mixing different original frames of a video signal converted to a frame rate of 60 Hz by 2-3 pulldown, and some frames are replaced with interpolated frames. In order to smooth the movement of the image. Processing the video signal so as to smooth the movement of the image is called dejada. For dejada, a memory for temporarily storing a plurality of frames of the video signal is required.

JP 2010-28472 A

  In recent years, 3D display devices that realize stereoscopic viewing of images using stereoscopic video signals (3D video signals) have begun to become popular. As one of the formats of the 3D video signal, there is a frame packing method in which a frame of a left eye image and a frame of a right eye image are arranged and transmitted in one vertical period. In the frame packing type 3D video signal, the left-eye image frame and the right-eye image frame are signals of horizontal 1280 pixels and vertical 720 pixels, respectively.

  It is assumed that there is a frame packing video signal obtained by converting a film video with a frame rate of 24 Hz to a frame rate of 60 Hz by 2-3 pulldown, and dejada processing is performed to smooth the motion of the video signal image. As described above, a frame packing type 3D video signal has two frames, that is, a left-eye image frame and a right-eye image frame in one vertical period. Therefore, in a video signal processing apparatus that performs dejada processing, A memory that temporarily stores a frame of a signal requires a larger capacity than a case of processing a normal non-stereoscopic video signal (2D video signal).

  In the configuration described in Patent Document 1, a memory area for five frames is required. Therefore, it leads to an increase in circuit scale and cost, which is not preferable.

  In view of such a problem, the present invention provides a memory that temporarily stores a frame of a video signal when generating an interpolation frame based on each of the left and right frames of the 2-3 pull-down converted frame packing video signal. An object of the present invention is to provide a video signal processing device, a video signal processing method, and a video signal processing program that can suppress the increase in the capacity of the video as much as possible.

  In order to solve the above-described problems of the conventional technology, the present invention converts the video of the first frame rate to the second frame rate by 2-3 pulldown, and the frame of the left eye image and the right eye in one vertical period. An image signal processing apparatus for processing a frame packing type stereoscopic video signal in which an image frame is arranged, and an index signal for identifying a frame period of the left eye image and a frame period of the right eye image A memory (14) having a plurality of memory areas (141 to 143) for storing a plurality of frames of the left-eye image frame or the right-eye image frame, and the left-eye image frame. A write control unit (11) for controlling to cyclically write a frame of an image or a frame of the right eye image to the plurality of memory areas; A first case indicating that the index signal is a left-eye image at the first frame phase in which the same frame of the sequence continues based on the index signal and the phase signal indicating the frame phase of the 2-3 pulldown sequence In the second case indicating that the index signal is a right eye image at the last frame phase in which the same frame of the sequence continues, the frame of the left eye image or the right While the circulation when writing the frame of the eye image in the plurality of memory areas is enabled, the rotation is disabled in the third case other than the first and second cases, and control is performed so as to write in the same memory area. Based on the write area patrol control unit (12), the index signal and the phase signal, A read control unit (13) that controls to read different left-eye image frames or different right-eye image frames written in the memory area, and reads motion frames from the plurality of memory areas. Provided is a video signal processing device comprising an interpolation frame generation unit (15) that generates an interpolation frame using the different left-eye image frames or different right-eye image frames. .

  In addition, in order to solve the above-described problems of the related art, the present invention converts the video of the first frame rate to the second frame rate by 2-3 pulldown, and the frame of the left eye image in one vertical period. A video signal processing method for processing a frame packing type stereoscopic video signal in which a frame of a right eye image is arranged, for identifying a frame period of the left eye image and a frame period of the right eye image An index signal is generated, and based on the index signal and a phase signal indicating a frame phase of a 2-3 pulldown sequence, the index signal is a left eye image at a first frame phase in which the same frame of the sequence continues. In the first case indicating that the index signal is in the last frame phase in which the same frame of the sequence continues. In the second case indicating that the image is a right-eye image, the first eye and the second eye are cyclically written to a plurality of memory areas for storing a plurality of frames of the left-eye image or the frame of the right-eye image. In the third case other than the above case, the circulation of writing the frame of the left eye image or the frame of the right eye image into the plurality of memory areas is stopped, and the index signal and the phase signal are written to the same memory area. The different left-eye image frames or the different right-eye image frames written in the plurality of memory areas are read out from the plurality of memory areas with reference to a motion vector. Generating an interpolated frame using different left-eye image frames or different right-eye image frames. To provide a video signal processing method for.

  Furthermore, in order to solve the above-described problems of the conventional technology, the present invention converts the video of the first frame rate to the second frame rate by 2-3 pulldown, and the frame of the left eye image in one vertical period. A video signal processing program for processing a frame packing type stereoscopic video signal in which a frame of a right eye image is arranged, and identifies a frame period of the left eye image and a frame period of the right eye image to a computer The index signal is generated at a first frame phase in which the same frame of the sequence continues based on the index signal and a phase signal indicating the frame phase of the 2-3 pulldown sequence. The first case indicating that the image is a left-eye image and the first case where the same frame in the sequence continues. In the second case where the index signal is a right-eye image at a frame phase of, the frame of the left-eye image or the frame of the right-eye image is cyclically written to a plurality of memory areas storing a plurality of frames. Step, and in the third case other than the first and second cases, the cycle of writing the frame of the left eye image or the frame of the right eye image to the plurality of memory areas is stopped, and the same memory area is A step of writing, a step of reading different left-eye image frames or different right-eye image frames written to the plurality of memory regions based on the index signal and the phase signal, and a motion vector, Referring to the different left-eye image frames read from the plurality of memory areas or different from each other. Using said frame of the right eye image to provide a video signal processing program characterized by and a step of generating an interpolation frame that.

  According to the video signal processing device, the video signal processing method, and the video signal processing program of the present invention, when generating the interpolation frame based on the left and right frames of the 2-3 pulldown converted frame packing video signal, It is possible to suppress the increase in the capacity of the memory for temporarily storing the signal frames as much as possible.

It is a block diagram which shows one Embodiment of the video signal processing apparatus of this invention. It is a figure which shows the relationship between a 3D film image | video and the video signal of a frame packing system with a frame rate of 60 Hz. It is a figure for demonstrating operation | movement of one Embodiment. It is a figure for demonstrating the production | generation operation | movement of the interpolation frame by one Embodiment.

  Hereinafter, an embodiment of a video signal processing device, a video signal processing method, and a video signal processing program according to the present invention will be described with reference to the accompanying drawings. In FIG. 1, an input video signal Sin is a frame packing video signal obtained by converting a film video having a frame rate of 24 Hz, which is a first frame rate, into a second frame rate of 60 Hz by 2-3 pulldown. It is. The video signal Sin is input to the memory 14 and the frame rate conversion unit 16.

  The relationship between a 3D film image and a frame packing image signal with a frame rate of 60 Hz will be described with reference to FIG. In FIG. 2A, frames A-L, B-L, C-L, and D-L are left-eye image frames, and frames A-R, B-R, C-R, and DR are right-eye image frames. Left eye image frame AL and right eye image frame AR, left eye image frame BL and right eye image frame BR, left eye image frame CL and right eye image frame CR, left eye image frame DL and right Each frame DR of the eye image is a 3D set. The frame of the left eye image and the frame of the right eye image each have a frame rate of 24 Hz.

  When the film video in FIG. 2A is converted to a frame rate of 60 Hz by 2-3 pull-down to obtain a video signal of the frame packing system, it is conceptually as shown in FIG. In the frame packing video signal, the left-eye image frame and the right-eye image frame are arranged in one frame of the frame packing video signal in 1/60 second, which is one vertical period. Specifically, a left-eye image frame is disposed on the upper side in the vertical direction within one frame, a right-eye image frame is disposed on the lower side in the vertical direction, and the frame between the left-eye image frame and the right-eye image frame is disposed between the frames. Is provided with a blank layer. In FIG. 2B, illustration of the blank layer is omitted.

  As shown in FIG. 2B, a set of a left-eye image frame AL and a right-eye image frame AR is continuous for three frames of a frame packing video signal, and the left-eye image frame BL and the right-eye image A pair of image frames BR continues for a period of two frames of a frame packing video signal. In the same manner, the set of the left eye image frame and the right eye image frame is alternately continued as 3 frames, 2 frames, 3 frames, and so on.

  Returning to FIG. 1, the synchronization signal Ssy is input to the index generator 17. The synchronization signal Ssy includes a vertical synchronization signal and a horizontal synchronization signal. The synchronization signal Ssy indicates a separation between the vertical period and the horizontal period, and is a timing signal indicating an effective area of data. Based on the input synchronization signal Ssy, the index generator 17 sequentially inputs pixel data as the video signal Sin is pixel data of the frame of the left eye image or pixel data of the frame of the right eye image. An index signal indicating that is generated.

  The index signal indicating the pixel data of the frame of the left eye image is the index signal iL, and the index signal indicating the pixel data of the frame of the right eye image is the index signal iR. The frame period of the left eye image and the frame period of the right eye image can be identified by the index signals iL and iR generated by the index generation unit 17. The index signals iL and iR generated by the index generation unit 17 are input to the write area cycle control unit 12, the read control unit 13, and the frame rate conversion unit 16.

  A phase signal Sph indicating the frame phase of a 2-3 pull-down sequence is input to the write area cycle control unit 12, the read control unit 13, and the frame rate conversion unit 16. As shown in FIG. 2B, the frame phase indicated by the phase signal Sph is any one of ph1, ph2, ph3, ph4, and ph5. The third frame when the same set of the left-eye image frame and the right-eye image frame is continuous for three frames is set as the frame phase ph1, and the first frame when the same set is continuous for two frames is set as the frame phase ph2. Frame phase ph3 for the second frame when the same set is 2 frames, Frame phase ph4 for the first frame when the same set is 3 frames, Frame phase ph5 for the second frame when the same set is 3 frames And

  The motion vector MV is detected by a motion vector detection unit (not shown). The motion vector detection unit estimates motion between temporally adjacent frames in the video signal Sin, and generates a motion vector MV. The motion vector detection unit obtains, for example, how much the target pixel group has moved between temporally adjacent frames of the video signal Sin by block matching, and determines the movement amount and the movement direction of the target pixel group. A vector MV may be generated.

  The motion vector MV is generated for each of the left eye image and the right eye image. Let the motion vector MV for the left eye image be the motion vector MV-L, and the motion vector MV for the right eye image be the motion vector MV-R. When the interpolation frame generation unit 15 generates an interpolation frame for the left eye image, a motion vector MV-L for the left eye image is supplied to the interpolation frame generation unit 15 described later to generate an interpolation frame for the right eye image. In doing so, a motion vector MV-R for the right eye image is supplied.

  The memory 14 has three memory areas 141 to 143. Each of the memory areas 141 to 143 has a capacity for storing one frame of the left eye image or the right eye image. The write area cycle control unit 12 refers to the index signals iL and iR and the phase signal Sph to cycle the memory areas 141 to 143 when writing the video signal Sin to the memory 14 when a specific condition is satisfied. A control signal S12 is generated for control. The control signal S12 is input to the write control unit 11, the read control unit 13, and the memory 14.

  In the present embodiment, the specific condition is an index signal iL indicating that the index signal generated by the index generation unit 17 is pixel data of the frame of the left eye image, and the frame phase indicated by the phase signal Sph is ph2. Or when the index signal generated by the index generation unit 17 is the index signal iR indicating that it is pixel data of the frame of the right-eye image and the frame phase indicated by the phase signal Sph is ph1 or ph3. is there.

  The write control unit 11 generates a write command C 11 for writing the video signal Sin to any one of the memory areas 141 to 143 of the memory 14 and supplies it to the memory 14. At this time, the write controller 11 controls to write the video signal Sin cyclically to the memory areas 141 to 143 based on the control signal S12. For example, the write control unit 11 cyclically counts “1”, “2”, “3”, “1”, “2”, “3”, “1”... And updates the counter value in units of frames. Has a counter.

  As the write command C11, the memory 14 writes the frame of the left eye image or the right eye image of the video signal Sin in the memory area 141 when the counter value is “1”, and the frame in the memory area 142 when the counter value is “2”. When the counter value is “3”, the frame is written in the memory area 143. The write control unit 11 updates the counter value of the frame counter based on the control signal S12 when the specific condition described above is satisfied. When the specific condition described above is not satisfied, the counter value of the frame counter is not updated.

  Thus, in the present embodiment, the first case where the same frame of the 2-3 pulldown sequence is the first frame phase in which the same frame is consecutive and the index signal iL of the left eye image is the same as the 2-3 pulldown sequence. In the second case where the index signal iR of the right eye image is the last frame phase in which the frames are continuous, the left eye image frame or the right eye image frame is stored in the memory areas 141 to 143 by the control of the writing control unit 11. The patrol when writing becomes effective. On the other hand, in the third case other than the first and second cases, the patrol is invalidated and patrol is stopped, and the left-eye image frame or the right-eye image frame is continuously written in the same memory area ( Will be overwritten).

  Based on the index signals iL and iR, the phase signal Sph, and the control signal S12, the read control unit 13 reads the pixel data of each of the two frame signals fa and fb from two of the memory areas 141 to 143. A read command C13 to be controlled is generated and supplied to the memory 14. The frame signals fa and fb are a frame signal of a left eye image or a frame signal of a right eye image in a frame packing video signal.

  When the index signal iL is input to the read control unit 13, the read control unit 13 generates a read command C13 for reading the frame signal of the left eye image as the frame signal fa or fb, and the index signal iR is input. In this case, the read control unit 13 generates a read command C13 for reading the frame signal of the right eye image as the frame signal fa or fb.

  Pixel data of each of the frame signals fa and fb read from the memory 14 is input to the interpolation frame generation unit 15. The interpolation frame generation unit 15 uses the pixel data of the frame signals fa and fb and refers to the motion vector MV (MV-L and MV-R), thereby interpolating between the frames of the frame signals fa and fb. Interpolated pixel data constituting the interpolated frame signal fi to be generated is sequentially generated. The interpolation frame signal fi generated by the interpolation frame generation unit 15 is input to the frame rate conversion unit 16.

  The frame rate conversion unit 16 refers to the phase signal Sph and interpolates the interpolation frame generated by the interpolation frame signal fi between adjacent frames of the video signal Sin so as to obtain an appropriate sequence, and sets the frame rate to 120 Hz. It converts and outputs as video signal Sout.

  Next, the operation of the video signal processing apparatus of this embodiment will be described again with reference to FIG. In FIG. 3, the input video signal Sin includes a left eye image frame ZL and a right eye image frame ZR, followed by a left eye image frame AL and a right eye image frame AR. The set of the frame BL of the eye image and the frame BR of the right eye image is followed by 2 frames, and the set of the frame CL of the left eye image and the frame CR of the right eye image is followed by 3 frames. Note that a set of a left eye image frame Y-L and a right eye image frame Y-R exists before the set of the left eye image frame Z-L and the right eye image frame Z-R. The frame phases indicated by the phase signal Sph are ph1, ph2, ph3, ph4, ph5 and the index signals iL, iR are as shown in FIG.

  When the video signal Sin is the frame Z-L of the left eye image, it is assumed that the frame counter of the writing control unit 11 is “1”, for example. As described above, when the frame phase is ph2 and ph4 with the index signal iL, and when the frame phase is ph1 and ph3 with the index signal iR, the control signal S12 is supplied to the write controller 11 and the counter value of the frame counter is changed. Updated. Accordingly, the counter value is “2” for the frame Z-R of the right eye image at the frame phase ph3, and the counter value is “3” for the frame A-L of the left eye image at the subsequent frame phase ph4. Thereafter, the counter value is not updated from the frame A-R of the right eye image at the frame phase ph4 to the frame A-L of the left eye image at the frame phase ph1.

  The counter value returns to “1” for the frame A-R of the right eye image at the frame phase ph1, and the counter value is “2” for the frame B-L of the left eye image at the frame phase ph2. In the same manner, the counter value is updated only under the above conditions.

  The frame of the left eye image or the right eye image of the video signal Sin is written into the memory area corresponding to the counter value of the frame counter. If the counter value is “1”, the frame of the left eye image or the right eye image is written into the memory area 141, and if the counter value is “2”, the frame of the left eye image or the right eye image is stored in the memory area 142. If the counter value is “3”, the frame of the left eye image or the right eye image is written in the memory area 143. In the memory areas 141 to 143 of the memory 14 illustrated in FIG. 3, the hatched memory areas indicate the memory areas in which the writing of the frame is updated.

  Since the counter value of the frame Z-L of the left eye image is “1”, it is written in the memory area 141, and the frame Z-R of the right eye image is written in the memory area 142 because the counter value is “2”. The subsequent frame A-L of the left eye image has a counter value of “3”, and is therefore written in the memory area 143. Thereafter, since the counter value is not updated from the frame AR of the right eye image at the frame phase ph4 to the frame AL of the left eye image at the frame phase ph1, the left eye image or the right eye image frame of the video signal Sin is sequentially stored in the memory area 143. The frame written and written in the memory area 143 is updated.

  Similarly, after the frame A-R of the right eye image of the frame phase ph1, the left eye image or the right eye image frame of the video signal Sin is written in one of the memory areas 141 to 143 corresponding to the counter value.

  As shown in FIG. 3, when the index signal is iL, the read control unit 13 controls to read two frames of different left-eye images as frame signals fa and fb, and when the index signal is iR, different right-eye images. These two frames are controlled to be read out as frame signals fa and fb. As can be seen from FIG. 3, two adjacent frames can be read as frame signals fa and fb in each of the left-eye image frame and the right-eye image frame.

  The output video signal Sout is generated as follows by the frame signals fa and fb of two adjacent frames. An interpolation frame ZA1-L is generated based on the frames Z-L and A-L of the left eye image at the frame phase ph4, and an interpolation frame ZA1-R is generated based on the frames Z-R and A-R of the right eye image at the frame phase ph4. An interpolation frame ZA2-L is generated based on the frames Z-L and A-L of the left eye image with the frame phase ph5, and an interpolation frame ZA2-R is generated based on the frames Z-R and A-R of the right eye image with the frame phase ph5.

  The left eye image frame AL is output as it is in the left eye image frames ZL and AL of the frame phase ph1, and the right eye image frame AR is output as it is in the right eye image frames ZR and AR of the frame phase ph1. . Similarly, interpolation frames AB1-L, AB1-R, AB2-L, AB2-R, BC1-L, BC1-R, BC2-L, and BC2-R are generated. The left eye image frame CL is output as it is in the left eye image frames BL and CL of the frame phase ph1, and the right eye image frame CR is output as it is in the right eye image frames BR and CR of the frame phase ph1. .

  The frame rate of the output video signal Sout is 120 Hz, which is twice the frame rate of 60 Hz of the input video signal Sin. As shown in FIG. 3, the frame phase after conversion to the output video signal Sout is ph11 and ph12 in the frame phase ph1, ph21 and ph22 in the frame phase ph2, ph31 and ph32 in the frame phase ph3, and ph41 in the frame phase ph4. At ph42 and frame phase ph5, they are ph51 and ph52.

  Further, an interpolation frame generation operation by the video signal processing apparatus of the present embodiment will be described with reference to FIG. FIG. 4A shows a predetermined motion of the left-eye image frame and the right-eye image frame in the frame packing video signal Sin generated by 2-3 pulldown conversion at a frame rate of 60 Hz. In the 3D video, since the left eye image and the right eye image have binocular parallax, the left eye image and the right eye image generally move differently. In the example shown in FIG. 4A, the position of the object moves horizontally in the frames AL, BL, and CL of the left eye image, and the position of the object moves horizontally in the frames AR, BR, and CR of the right eye image. Yes.

  The frame phases ph2 and ph3 are a set of the same frame by 2-3 pulldown conversion, and the frame phases ph4, ph5, and ph1 are the set of the same frame. Since the object moves every two or three frames, the movement of the image is not smooth and is perceived as judder.

  FIG. 4B shows each frame of the video signal Sout that has been converted to a frame rate of 120 Hz, the judder is removed, and the motion of the image is smooth. For the left eye image frames A-L and C-L with hatching, the original left-eye image frames A-L and C-L in FIG. Interpolated frames AB1-L, AB2-L, BC1-L, and BC2-L are output between the frames A-L and C-L of the left eye image. As described with reference to FIG. 3, the frames A-R and C-R of the original right-eye image in FIG. 4A are output as they are, as described with reference to FIG. Interpolated frames AB1-R, AB2-R, BC1-R, and BC2-R are output between the frames A-R and C-R of the right eye image.

  As shown in FIG. 4B, the motion vector MV is detected as the motion vector MV-L in the frame of the left eye image, and is detected as the motion vector MV-R in the frame of the right eye image. The left-eye image interpolation frames AB1-L, AB2-L, BC1-L, BC2-L and the right-eye image interpolation frames AB1-R, AB2-R, BC1-R, BC2-R are respectively motion vectors MV. Referring to -L and MV-R, they are mixed and generated at a rate corresponding to the time distance between two frames in the video signal Sin in FIG.

  The left-eye image frame BL and the right-eye image frame BR in the video signal Sin in FIG. 4A are not output as the video signal Sout, but the left-eye image frame BL is the time of the left-eye image frames AL and CL. Is used to generate an interpolation frame, assuming that the frame BR of the right eye image is located at the temporal intermediate position (frame phase ph42) of the frames AR and CR of the right eye image. To do.

  For example, since the interpolation frame AB1-L has a time distance ratio of 2: 3 between the frame AL (frame phase ph12) of the left eye image and the frame BL (frame phase ph41) of the left eye image, Can be produced at a mixing ratio of 3: 2. Further, since the interpolation frame AB2-L has a time distance ratio of 4: 1 between the frame AL of the left eye image and the frame BL of the left eye image, the frames AL and BL are mixed at a mixing ratio of 1: 4. Can be generated by

  As described above, according to the video signal processing apparatus and the video signal processing method of the present embodiment, the memory area provided in the memory 14 corresponds to three frames of the memory areas 141 to 143 (the left eye image in the frame packing video signal). Alternatively, it is possible to generate respective interpolation frames using two frames in the video signal Sin as three frames of the right eye image). Therefore, an increase in the capacity of the memory that temporarily stores the frame of the left eye image or the right eye image of the video signal of the frame packing method can be suppressed as much as possible.

  A configuration equivalent to the video signal processing apparatus and video signal processing method of the present embodiment described above can be realized by a computer program. By storing a video signal processing program in a storage medium such as a ROM connected to the computer and operating the video signal processing program by the computer, the computer can function as a video signal processing device. Each step similar to the processing method can be executed.

  In this case, the video signal Sin, the synchronization signal Ssy, the phase signal Sph, and the motion vector MV are input to the computer, and the frame of the left eye image or the right eye image is stored in a working memory area such as a RAM connected to the computer. The interpolation frame may be generated while doing so. According to the video signal processing program of this embodiment, the working memory area such as the RAM has a capacity for three frames as the capacity for storing the left-eye image frame or the right-eye image frame as in the memory 14. It will be good. Ssy, phase signal Sph, and motion vector MV may be generated by a computer.

  The present invention is not limited to the embodiment described above, and various modifications can be made without departing from the scope of the present invention. In the present embodiment, the configuration for performing the frame rate conversion is shown, but the frame rate may not be converted.

DESCRIPTION OF SYMBOLS 11 Write control part 12 Write area circulation control part 13 Read control part 14 Memory 15 Interpolation frame production | generation part 16 Frame rate conversion part 17 Index production | generation part 141-143 Memory area | region

Claims (3)

The video of the first frame rate is converted to the second frame rate by 2-3 pulldown, and a frame packing type stereoscopic video signal in which a frame of a left eye image and a frame of a right eye image are arranged in one vertical period. A video signal processing device for processing,
An index generation unit that generates an index signal for identifying a frame period of the left eye image and a frame period of the right eye image;
A memory having a plurality of memory areas for storing a plurality of frames of the left-eye image frame or the right-eye image frame;
A write control unit that controls to cyclically write the frame of the left eye image or the frame of the right eye image to the plurality of memory areas;
Based on the index signal and a phase signal indicating the frame phase of the 2-3 pull-down sequence, a first frame phase indicating that the index signal is a left-eye image at a first frame phase in which the same frame of the sequence continues. And in the second case indicating that the index signal is a right eye image at the last frame phase in which the same frame of the sequence continues, the frame of the left eye image or the Control is performed to enable the circulation when writing the frame of the right eye image in the plurality of memory areas, while invalidating the circulation in the third case other than the first and second cases, and writing to the same memory area. A write area patrol control unit,
Based on the index signal and the phase signal, a read control unit that controls to read different left-eye image frames or different right-eye image frames written in the plurality of memory areas;
An interpolation frame generation unit that generates an interpolation frame by using different left-eye image frames or different right-eye image frames read from the plurality of memory regions with reference to a motion vector;
A video signal processing apparatus comprising: A video of a first frame rate is converted to a second frame rate by 2-3 pulldown, and a 3D video signal of a frame packing system in which a frame of a left eye image and a frame of a right eye image are arranged in one vertical period. A video signal processing method to be processed,
Generating an index signal for identifying a frame period of the left eye image and a frame period of the right eye image;
Based on the index signal and a phase signal indicating the frame phase of the 2-3 pull-down sequence, a first frame phase indicating that the index signal is a left-eye image at a first frame phase in which the same frame of the sequence continues. And a second case indicating that the index signal is a right eye image at the last frame phase in which the same frame of the sequence continues, a plurality of frames of the left eye image or the right eye image Cyclically write to multiple memory areas
In the third case other than the first and second cases, the cycle of writing the frame of the left eye image or the frame of the right eye image to the plurality of memory areas is stopped, and the same memory area is written,
Based on the index signal and the phase signal, the different left-eye image frames or the different right-eye image frames written in the plurality of memory areas are read,
Video signal processing characterized by referring to a motion vector and generating an interpolation frame using different left eye image frames or different right eye image frames read from the plurality of memory areas Method. A video of a first frame rate is converted to a second frame rate by 2-3 pulldown, and a 3D video signal of a frame packing system in which a frame of a left eye image and a frame of a right eye image are arranged in one vertical period. A video signal processing program to be processed,
On the computer,
Generating an index signal for identifying a frame period of the left eye image and a frame period of the right eye image;
Based on the index signal and a phase signal indicating the frame phase of the 2-3 pull-down sequence, a first frame phase indicating that the index signal is a left-eye image at a first frame phase in which the same frame of the sequence continues. And a second case indicating that the index signal is a right eye image at the last frame phase in which the same frame of the sequence continues, a plurality of frames of the left eye image or the right eye image Cyclically writing to a plurality of memory areas to be stored,
Stopping the cycle of writing the left-eye image frame or the right-eye image frame to the plurality of memory areas in the third case other than the first and second cases, and writing to the same memory area; ,
Based on the index signal and the phase signal, reading different left-eye image frames or different right-eye image frames written in the plurality of memory areas;
Generating an interpolation frame using different left eye image frames or different right eye image frames read from the plurality of memory regions with reference to a motion vector; and
A video signal processing program characterized in that

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