CN103634599A - Video processing method, device and display device - Google Patents
Video processing method, device and display device Download PDFInfo
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- CN103634599A CN103634599A CN201210311732.3A CN201210311732A CN103634599A CN 103634599 A CN103634599 A CN 103634599A CN 201210311732 A CN201210311732 A CN 201210311732A CN 103634599 A CN103634599 A CN 103634599A
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Abstract
The invention provides a video processing method and device, and a display device. The method comprises the following steps; comparing a motion vector of a first frame, relative to a last frame, of a video sequence group obtained according to preset frame number grouping with a preset threshold value; transmitting the video sequence group according to the comparison result. The method and device carry out grouping process to the video sequence, and the motion vector of the first frame, relative to the last frame, of the video sequence group is compared with the preset threshold value; according to different comparison results, different transmissions are carried out to reduce transmission data amount, thereby improving transmission speed of an LCD, further improving frame refresh rate, and improving video processing capacity of the LCD; the video processing method, device and the display device are easy to realize and low in cost.
Description
Technical field
The present invention relates to field of display, relate in particular to a kind of method for processing video frequency, device and display unit.
Background technology
Current field of display, about the research of coding and decoding video and Video processing fewer, substantially be in the embryonic stage, because storage capacity and the video data disposal ability of display are limited, and general video processnig algorithms complexity is higher, be difficult to meet liquid crystal display (Liquid Crystal Display, LCD) requirement, because algorithm generally need to be integrated in clock-control register (TCON) or drive among integrated chip (DIC), at present, some TCON JiDIC producers are can be on product more integrated less algorithms of amounts of calculation, for example, analysis frame rate control (FRC) algorithm, dither algorithm, image sharpening etc., solve many GTGs and show problem and optimized image picture, but the video data disposal ability of liquid crystal display also fails to be improved fully at present.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method for processing video frequency, device and display unit, can improve Video processing ability.
For achieving the above object, technical scheme of the present invention is achieved in that
A method for processing video frequency, described method comprises:
Motion vector and predetermined threshold value by the first frame of the video sequence group obtaining according to default frame number grouping with respect to last frame compare;
According to result relatively, described video sequence group is transmitted.
Wherein, described default frame number is to be less than or equal to 8 positive integer.
Further, described method also comprises:
Video sequence to input divides into groups according to default frame number, obtains video sequence group.
The first frame of the video sequence group that wherein, the default frame number grouping of described basis obtains with respect to the motion vector of last frame is:
According to
calculate in described video sequence group the first frame with respect to the motion vector of last frame; Wherein,
for the value of the motion vector of x direction,
for the value of the motion vector of y direction, described W
pfor correction factor constant.
Wherein, described according to comparative result, described video sequence group is transmitted as:
When described motion vector is more than or equal to described predetermined threshold value, calculate in described video sequence group the residual error between consecutive frame and quantize, transmit the video data of the first frame of described video sequence group and the residual error that quantification obtains.
Further, described method also comprises:
According to the video data of the first frame receiving and residual error that quantification obtains, reconstruct consecutive frame, recovers described video sequence group.
Wherein, described according to comparative result, described video sequence group is transmitted as:
When described motion vector is less than described predetermined threshold value, transmit the first frame of described video sequence group and the video data of last frame.
Further, described method also comprises:
According to the first frame receiving and the video data of last frame, according to
reconstruct intermediate frame; Wherein, the value that described m is described default frame number; Described i is the frame number of the intermediate frame of current reconstruct; Described F
1it is the video data of the first frame; Described F
mvideo data for last frame.
A video process apparatus, described video process apparatus comprises: compare transmission unit; Wherein,
Described relatively transmission unit, for by the first frame of the video sequence group obtaining according to default frame number grouping, motion vector and the predetermined threshold value with respect to last frame compares; And according to comparative result, described video sequence group is transmitted.
Wherein, described default frame number is to be less than or equal to 8 positive integer.
Further, described video process apparatus also comprises: resolving cell, for the video sequence of input is divided into groups according to default frame number, obtains video sequence group and be transferred to comparison transmission unit.
Wherein, described relatively transmission unit, also for basis
calculate the first frame to the motion vector of last frame; Wherein,
for the value of the motion vector of x direction,
for the value of the motion vector of y direction, described W
pfor correction factor constant.
Wherein, described relatively transmission unit, specifically for when described motion vector is more than or equal to described predetermined threshold value, calculate in described video sequence group the residual error between consecutive frame and quantize, transmit the video data of the first frame of described video sequence group and the residual error that quantification obtains.
Further, described video process apparatus also comprises: reset unit, and the video data of the first frame receiving for basis and the residual error that quantification obtains, reconstruct consecutive frame, recovers described video sequence group.
Wherein, described relatively transmission unit, specifically for when described motion vector is less than described predetermined threshold value, transmits the first frame of described video sequence group and the video data of last frame.
Further, described video process apparatus also comprises: reset unit, and the first frame receiving for basis and the video data of last frame, according to
reconstruct intermediate frame; Wherein, the value that described m is described default frame number; Described i is the frame number of the intermediate frame of current reconstruct; Described F
1it is the video data of the first frame; Described F
mvideo data for last frame.
A display unit, comprises video process apparatus as above.
Wherein, described video process apparatus is integrated in the clock-control register (TCON) of display unit or drives in integrated chip (DIC).
The present invention passes through video sequence packet transaction, relatively video sequence group the first frame is with respect to last frame motion vector and predetermined threshold value, according to different comparative results, carry out different transmission, can reduce the data volume of transmission, promote the transmission speed of display unit, and then improve picture refreshing rate, improved the Video processing ability of display unit; And more easily realize, cost is lower.
Accompanying drawing explanation
Fig. 1 is the realization flow schematic diagram of method for processing video frequency of the present invention;
Fig. 2 is the structural representation of video process apparatus of the present invention;
Description of reference numerals:
20-resolving cell; 21-is transmission unit relatively; 22-reset unit.
Embodiment
Basic thought of the present invention is: motion vector and predetermined threshold value by the first frame of the video sequence group obtaining according to default frame number grouping with respect to last frame compare; According to result relatively, described video sequence group is transmitted.
For making the object, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is described in more detail.
Fig. 1 shows the realization flow of method for processing video frequency of the present invention, and as shown in Figure 1, described method comprises the steps:
Wherein, described default frame number is to be less than or equal to 8 positive integer, here, although once the frame number of transmission is more, it is faster that image transmitting completes, but video data also can more easily be lost, cause the image recovering to be affected, therefore, conventionally using 8 frames as one group, specifically can carry out single treatment every 8 frames, successively to 1-8 frame, 9-16 frame .... carry out the processing as step 101, be to be understood that, also can be according to actual conditions, as the accuracy requirement that image recovers, default frame number is set to be less than 8 positive integer; Described predetermined threshold value can arrange according to actual needs, here, when described predetermined threshold value arrange less, the video quality finally obtaining is better.
The mode of choosing of described predetermined threshold value can be: the mean value of getting the motion vector between the consecutive frame of all frames in one group of video sequence group, obtain average frame, then calculate average frame and organize the motion vector of the first frame with respect to this, become the motion vector of multiple relation as predetermined threshold value this motion vector or this motion vector; Certainly, also can calculate average frame with respect to the motion vector of this group last frame, become the motion vector of multiple relation as predetermined threshold value this motion vector or this motion vector; The concrete numerical value of multiple, can arrange according to actual needs.
The first frame of the video sequence group that the default frame number grouping of described basis obtains with respect to the motion vector of last frame can be:
TCON or DIC basis
calculate in this video sequence group the first frame with respect to the motion vector of last frame; Wherein,
for the value of the motion vector of x direction,
for the value of the motion vector of y direction, described W
pfor correction factor constant, be conventionally set to 1, can compensate motion vector.
Preferably, before this step, can also comprise step 100, the video sequence of input is divided into groups according to default frame number, obtain video sequence group.
Particularly, when described motion vector is more than or equal to described predetermined threshold value, TCON or DIC calculate in described video sequence group the residual error between consecutive frame and quantize, and transmit the video data of the first frame of described video sequence group and the residual error that quantification obtains; When described motion vector is less than described predetermined threshold value, TCON or DIC transmit the first frame of described video sequence group and the video data of last frame;
Wherein, to the video data of described the first frame or last frame, can transmit by taking 8bit; To described residual error, can adopt the mark quantization methods that amount of calculation is little, because the pixel value between consecutive frame is more approaching, adopt 4bit to quantize to recover completely, and then by taking transmitted bit still less, the data volume that has reduced transmission, has promoted transmission speed.
Further, said method can also comprise step 103, and the video data coming according to transmission, carries out the reconstruct of frame, recovers described video sequence group;
Particularly, according to the video data of the first frame receiving and residual error that quantification obtains, reconstruct consecutive frame, recovers described video sequence group; Here, described residual error is the difference of the video data between consecutive frame, after receiving the residual error that the video data of the first frame and the first frame and the second frame video data quantization obtain, the video data of the first frame and described residual error are carried out to inverse quantization decoding, then carry out add operation, the video data that is about to the first frame adds the residual error of the above first frame and the second frame video data, can obtain the video data of the second frame, the like, can obtain the video data of each frame in video sequence group.
According to the first frame receiving and the video data of last frame, according to
reconstruct intermediate frame; Wherein, the value that described m is described default frame number; Described i is the frame number of the intermediate frame of current reconstruct; Described F
1it is the video data of the first frame; Described F
mvideo data for last frame;
Here, the picture quality after reconstruct is compared with original image, need to meet signal-noise power ratio PSNR > 32dB.
Fig. 2 shows the structural representation of video process apparatus of the present invention, and as shown in Figure 2, described video process apparatus comprises:
Compare transmission unit 21; Wherein,
Described relatively transmission unit 21, for by the first frame of the video sequence group obtaining according to default frame number grouping, motion vector and the predetermined threshold value with respect to last frame compares; And according to comparative result, described video sequence group is transmitted.
Further, described video process apparatus also comprises resolving cell 20, divides into groups, and the video sequence group obtaining after grouping is transferred to described relatively transmission unit 21 for the video data (being video sequence) of input is one group according to default frame number.
Preferably, the video sequence group after grouping can be transferred to comparison transmission unit 21 simultaneously.
Certainly, described relatively transmission unit 21 can not need carry out clear and definite division operation before the first frame of video sequence group compares with respect to the motion vector of last frame and predetermined threshold value, only need analyze relatively and process every default frame number, for example, successively to 8 frames, carry out single treatment, successively to 1-8 frame, 9-16 frame .... as above process
Wherein, described default frame number is to be less than or equal to 8 positive integer.Here, although once the frame number of transmission is more, it is faster that image transmitting completes, but video data also can more easily be lost, cause the image recovering to be affected, therefore, conventionally 8 frames are processed as one group, specifically video sequence can be divided into groups according to one group of 8 frame, obtain video sequence group, or every 8 frames, carry out single treatment, successively to 1-8 frame, 9-16 frame .... carry out processing as above
Should be appreciated that also can be according to actual conditions, and as the accuracy requirement that image recovers, default frame number is set to be less than 8 positive integer; Described predetermined threshold value can arrange according to actual needs, here, when described predetermined threshold value arrange less, the video quality finally obtaining is better.
Wherein, described relatively transmission unit 21, specifically for basis
calculate the first frame with respect to the motion vector of last frame; Wherein,
for the value of the motion vector of x direction,
for the value of the motion vector of y direction, described W
pfor correction factor constant, be conventionally set to 1, can compensate motion vector.
Wherein, described relatively transmission unit 21, specifically for when described motion vector is more than or equal to described predetermined threshold value, calculate in described video sequence group the residual error between consecutive frame and quantize, transmit the video data of the first frame of described video sequence group and the residual error that quantification obtains; Wherein, to the video data of described the first frame, can transmit by taking 8bit; To described residual error, can adopt the mark quantization methods that amount of calculation is little, because the pixel value between consecutive frame is more approaching, adopt 4bit to quantize to recover completely, and then by taking transmitted bit still less, the data volume that has reduced transmission, has promoted transmission speed;
Further, described video process apparatus also comprises reset unit 22, for according to the described relatively comparative result of transmission unit 21, recovers described video sequence group;
Particularly, reset unit 22, the video data of the first frame receiving specifically for basis and the residual error that quantification obtains, reconstruct consecutive frame, recovers described video sequence group; Here, described residual error is the difference of the video data between consecutive frame, after receiving the residual error that the video data of the first frame and the first frame and the second frame video data quantization obtain, the video data of the first frame and described residual error are carried out to inverse quantization decoding, then carry out add operation, the video data that is about to the first frame adds the residual error of the above first frame and the second frame video data, can obtain the video data of the second frame, the like, can obtain the video data of each frame in video sequence group.
Wherein, described relatively transmission unit 21, specifically for when described motion vector is less than described predetermined threshold value, transmits the first frame of described video sequence group and the video data of last frame;
Described reset unit 22, the first frame receiving specifically for basis and the video data of last frame, according to
reconstruct intermediate frame; Wherein, the value that described m is described default frame number; Described i is the frame number of the intermediate frame of current reconstruct; Described F1 is the video data of the first frame; Described F
mvideo data for last frame.
Preferably, the picture quality after reconstruct is compared with original image, need to meet signal noise power ratio PSNR > 32dB.
The present invention also provides a kind of display unit of video process apparatus as mentioned above that comprises, and wherein, described video process apparatus can be integrated in the TCON or DIC of display unit.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (18)
1. a method for processing video frequency, is characterized in that, described method comprises:
Motion vector and predetermined threshold value by the first frame of the video sequence group obtaining according to default frame number grouping with respect to last frame compare;
According to result relatively, described video sequence group is transmitted.
2. method according to claim 1, is characterized in that, described default frame number is to be less than or equal to 8 positive integer.
3. method according to claim 1, is characterized in that, described method also comprises:
Video sequence to input divides into groups according to default frame number, obtains video sequence group.
4. method according to claim 1, is characterized in that, the first frame of the video sequence group that the default frame number grouping of described basis obtains with respect to the motion vector of last frame is:
According to
calculate in described video sequence group the first frame with respect to the motion vector of last frame; Wherein,
for the value of the motion vector of x direction,
for the value of the motion vector of y direction, described W
pfor correction factor constant.
5. method according to claim 1, is characterized in that, described according to comparative result, and described video sequence group is transmitted as:
When described motion vector is more than or equal to described predetermined threshold value, calculate in described video sequence group the residual error between consecutive frame and quantize, transmit the video data of the first frame of described video sequence group and the residual error that quantification obtains.
6. method according to claim 5, is characterized in that, described method also comprises:
According to the video data of the first frame receiving and residual error that quantification obtains, reconstruct consecutive frame, recovers described video sequence group.
7. method according to claim 1, is characterized in that, described according to comparative result, and described video sequence group is transmitted as:
When described motion vector is less than described predetermined threshold value, transmit the first frame of described video sequence group and the video data of last frame.
8. method according to claim 7, is characterized in that, described method also comprises:
According to the first frame receiving and the video data of last frame, according to
reconstruct intermediate frame; Wherein, the value that described m is described default frame number; Described i is the frame number of the intermediate frame of current reconstruct; Described F
1it is the video data of the first frame; Described F
mvideo data for last frame.
9. a video process apparatus, is characterized in that, described video process apparatus comprises: compare transmission unit; Wherein,
Described relatively transmission unit, for by the first frame of the video sequence group obtaining according to default frame number grouping, motion vector and the predetermined threshold value with respect to last frame compares; And according to comparative result, described video sequence group is transmitted.
10. video process apparatus according to claim 9, is characterized in that, described default frame number is to be less than or equal to 8 positive integer.
11. video process apparatus according to claim 9, is characterized in that, described video process apparatus also comprises: resolving cell, for the video sequence of input is divided into groups according to default frame number, obtains video sequence group and be transferred to comparison transmission unit.
12. video process apparatus according to claim 9, is characterized in that, described relatively transmission unit, also for basis
calculate the first frame to the motion vector of last frame; Wherein,
for the value of the motion vector of x direction,
for the value of the motion vector of y direction, described W
pfor correction factor constant.
13. video process apparatus according to claim 9, it is characterized in that, described relatively transmission unit, specifically for when described motion vector is more than or equal to described predetermined threshold value, calculate in described video sequence group the residual error between consecutive frame and quantize, transmitting the video data of the first frame of described video sequence group and the residual error that quantification obtains.
14. video process apparatus according to claim 13, it is characterized in that, described video process apparatus also comprises: reset unit, the video data of the first frame receiving for basis and the residual error that quantification obtains, reconstruct consecutive frame, recovers described video sequence group.
15. video process apparatus according to claim 9, is characterized in that, described relatively transmission unit, specifically for when described motion vector is less than described predetermined threshold value, transmits the first frame of described video sequence group and the video data of last frame.
16. video process apparatus according to claim 15, is characterized in that, described video process apparatus also comprises: reset unit, and the first frame receiving for basis and the video data of last frame, according to
reconstruct intermediate frame; Wherein, the value that described m is described default frame number; Described i is the frame number of the intermediate frame of current reconstruct; Described F
1it is the video data of the first frame; Described F
mvideo data for last frame.
17. 1 kinds of display unit, is characterized in that, described display unit comprises the video process apparatus as described in claim 9 to 16 any one.
18. display unit according to claim 17, is characterized in that, described video process apparatus is integrated in the clock-control register TCON of display unit or drives in integrated chip DIC.
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