CN1216496C - Motion vector predicting method and device in video coding-decoding - Google Patents

Motion vector predicting method and device in video coding-decoding Download PDF

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CN1216496C
CN1216496C CN 03143429 CN03143429A CN1216496C CN 1216496 C CN1216496 C CN 1216496C CN 03143429 CN03143429 CN 03143429 CN 03143429 A CN03143429 A CN 03143429A CN 1216496 C CN1216496 C CN 1216496C
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楼剑
虞露
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Huawei Technologies Co Ltd
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Zhejiang University ZJU
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Abstract

The present invention discloses a method and a device for predicting a motion vector in video coding/decoding. In the method, a motion vector of a current pixel block E is predicted according to three motion vectors in the motion vectors of a processed pixel block A, a processed pixel block B, a processed pixel block C and a processed pixel block D at the periphery of the current pixel block E to be processed. In the method for predicting a motion vector, which is adopted in the present invention, the motion vectors of three processed pixel blocks at the periphery of the current pixel block to be processed are selected to obtain (MV1X, MV1Y), (MV2X, MV2Y) and (MV3X, MV3Y), the motion vector of the pixel block to be processed is predicted according to the three motion vectors to obtain a predicted value of the motion vector of the pixel block to be processed so that the motion vector coding bit number of the pixel block to be processed is reduced, and the compression efficiency of the video coding is improved. The device for predicting a motion vector in video coding/decoding in the present invention completely realizes the prediction method in the present invention.

Description

Method of motion vector prediction in a kind of coding and decoding video and device
Technical field
The present invention relates to electric numerical data processing technology field, method of motion vector prediction and device in particularly a kind of coding and decoding video.
Background technology
H.261 traditional video encoding standard such as ITU formulate, H.263, H.26L, the MEPG-1 that organizes to set up of the MPEG of standard and ISO H.264, MPEG-2, MPEG-4 etc. are based on hybrid coding, promptly on the Hybrid Coding framework.So-called hybrid encoding frame is to take all factors into consideration prediction, and the coding framework of the method for conversion and entropy coding has following main feature:
1) utilize prediction to remove the redundancy of time-domain;
2) utilize conversion to remove the redundancy of spatial domain;
3) remove statistical redundancy with entropy coding;
Above-mentioned video encoding standard all has intracoded frame, i.e. I frame, and inter-frame encoding frame, i.e. and P frame, I frame and P frame adopt different coding methods.The cataloged procedure of I frame is as follows: the residual block that raw image data or infra-frame prediction are obtained carries out two-dimensional transform; In transform domain, conversion coefficient is quantized then; Carry out entropy coding at last, i.e. Huffman coding or arithmetic coding etc.The cataloged procedure of P frame is as follows: adopt estimation to obtain motion vector, adopt the inter prediction based on motion compensation then, then the residual block that inter prediction is obtained carries out two-dimensional transform, coefficient in transform domain is quantized again, and carries out entropy coding at last.
Because video data stronger correlation on time-domain and spatial domain, estimation is obtained motion vector and prediction residual encode and to obtain bigger compression ratio.Motion-vector prediction is a factor that improves coding gain, so motion-vector prediction is a part important in the coding and decoding video.
The motion vector encoder bit number accounts for a sizable part in the encoded video bit number, so utilizing around the current pending block of pixels the motion vector of processed pixels piece to treat the processed pixels block motion vector predicts, the difference of transmitting moving vector predictor and actual motion vector value replaces direct transmitting moving vector, can improve compression ratio.Generally, the motion vector of pending block of pixels do not predict or the Forecasting Methodology that adopts comparatively simple, code efficiency is not high.
Summary of the invention
The purpose of this invention is to provide method of motion vector prediction and device in a kind of coding and decoding video, can according to around the current pending block of pixels the motion vector of processed pixels piece predict the motion vector of pending block of pixels.
In order to achieve the above object, the technical solution used in the present invention is as follows:
According to around the current pending block of pixels E the motion vector of processed pixels piece A, block of pixels B, block of pixels C, block of pixels D obtain the motion vector predictor (MV of block of pixels E PRED, X, MV PRED, Y), (MVA X, MVA Y) be the motion vector of block of pixels A, (MVB X, MVB Y) be the motion vector of block of pixels B, (MVC X, MVC Y) be the motion vector of block of pixels C, (MVD X, MVD Y) be the motion vector of block of pixels D, subscript X represents the horizontal component of motion vector, subscript Y represents the vertical component of motion vector;
Select around the current pending block of pixels E three the motion vector of processed pixels piece obtain (MV1 X, MV1 Y), (MV2 X, MV2 Y), (MV3 X, MV3 Y), (MV1 X, MV1 Y), (MV2 X, MV2 Y), (MV3 X, MV3 Y) be respectively (MVA X, MVA Y), (MVB X, MVB Y), (MVC X, MVC Y), (MVD X, MVD Y) in one, if the piece of the encoded pixels C around the block of pixels E to be encoded is unavailable, select (MV1 so X, MV1 Y)=(MVA X, MVA Y), (MV2 X, MV2 Y)=(MVB X, MVB Y), (MV3 X, MV3 Y)=(MVD X, MVD Y).
By MV1 X, MV2 X, MV3 XPrediction obtains temporary value TEMP X, as follows:
A) calculate ABSVAL12 X, ABSVAL23 X, ABSVAL13 X, ABSVAL12 wherein X=| MV1 X-MV2 X|, ABSVAL23 X=| MV2 X-MV3 X|, ABSVAL13 X=| MV1 X-MV3 X|, || expression takes absolute value;
B) if ABSVAL12 XLess than ABSVAL23 XAnd less than ABSVAL13 X, so temporary value TEMP X=MV1 X+ MV2 X
C) if ABSVAL23 XLess than ABSVAL12 XAnd less than ABSVAL13 X, so temporary value TEMP X=MV2 X+ MV3 X
D) if ABSVAL13 XLess than ABSVAL12 XAnd less than ABSVAL23 X, so temporary value TEMP X=MV1 X+ MV3 X
E) if ABSVAL12 XEqual ABSVAL13 XAnd less than ABSVAL23 X, so temporary value TEMP X=2 * MV1 X
F) if ABSVAL12 XEqual ABSVAL23 XAnd less than ABSVAL13 X, so temporary value TEMP X=2 * MV2 X
G) if ABSVAL23 XEqual ABSVAL13 XAnd less than ABSVAL12 X, so temporary value TEMP X=2 * MV3 X
H) otherwise, temporary value TEMP X=2 * MV1 X
According to temporary value TEMP XObtain the motion vector horizontal component predicted value MV of pending block of pixels E PRED, X, as follows:
MV PRED，X＝TEMP X÷2。
By MV1 Y, MV2 Y, MV3 YPrediction obtains temporary value TEMP Y, as follows:
A) calculate ABSVAL12 Y, ABSVAL23 Y, ABSVAL13 Y, ABSVAL12 wherein Y=| MV1 Y-MV2 Y|, ABSVAL23 Y=| MV2 Y-MV3 Y|, ABSVAL13 Y=| MV1 Y-MV3 Y|, || expression takes absolute value;
B) if ABSVAL12 YLess than ABSVAL23 YAnd less than ABSVAL13 Y, so temporary value TEMP Y=MV1 Y+ MV2 Y
C) if ABSVAL23 YLess than ABSVAL12 YAnd less than ABSVAL13 Y, so temporary value TEMP Y=MV2 Y+ MV3 Y
D) if ABSVAL13 YLess than ABSVAL12 YAnd less than ABSVAL23 Y, so temporary value TEMP Y=MV1 Y+ MV3 Y
E) if ABSVAL12 YEqual ABSVAL13 YAnd less than ABSVAL23 Y, so temporary value TEMP Y=2 * MV1 Y
F) if ABSVAL12 YEqual ABSVAL23 YAnd less than ABSVAL13 Y, so temporary value TEMP Y=2 * MV2 Y
G) if ABSVAL23 YEqual ABSVAL13 YAnd less than ABSVAL12 Y, so temporary value TEMP Y=2 * MV3 Y
H) otherwise, temporary value TEMP Y=2 * MV1 Y
According to temporary value TEMP YObtain the motion vector vertical component predicted value MV of pending block of pixels E PRED, Y, as follows:
MV PRED，Y＝TEMP Y÷2。
Motion-vector prediction device in a kind of coding and decoding video comprises:
Be used to accept to store around the current pending block of pixels input unit of the motion vector of processed pixels piece;
The motion vector that the motion vector of the piece of processed pixels in the input unit is selected is selected processing unit;
The motion vector of current pending block of pixels is carried out the motion-vector prediction processing unit of prediction processing with three motion vectors after the motion vector selection processing;
Be used for the output device that the storing moving vector carries out the motion vector predictor of the current pending block of pixels after the prediction processing and output is provided;
Input unit is selected to be connected by data/address bus between the processing unit with motion vector, transmits the motion vector of processed pixels piece; Motion vector is selected to be connected by data/address bus between processing unit and the motion-vector prediction processing unit, transmits three motion vectors; Be connected by data/address bus between motion-vector prediction processing unit and the output device, transmit the motion vector predictor of current pending block of pixels.
The present invention compares with background technology, the beneficial effect that has:
In the coding and decoding video of the present invention the Forecasting Methodology of motion vector can select around the current pending block of pixels three the motion vector of processed pixels piece obtain (MV1 X, MV1 Y), (MV2 X, MV2 Y), (MV3 X, MV3 Y), predict the motion vector predictor that obtains pending block of pixels according to these three motion vectors again, thereby reduced the motion vector encoder bit number of pending block of pixels, improved the compression efficiency of video coding.Motion-vector prediction device in the coding and decoding video among the present invention is realized the Forecasting Methodology among the present invention fully.
Description of drawings
Fig. 1 is pending block of pixels and the schematic diagram of processed pixels piece.
Fig. 2 is the motion-vector prediction schematic representation of apparatus in the coding and decoding video.
Fig. 3 is the schematic diagram of the motion-vector prediction processing unit in the motion-vector prediction device.
Embodiment
Video data can be divided into the block of pixels of different sizes and carry out estimation.For example, 4 * 4,4 * 8,8 * 4,8 * 8,4 * 16,16 * 4,16 * 8,8 * 16 and 16 * 16 etc.Block of pixels to be encoded or block of pixels to be decoded are called as pending block of pixels; The encoded pixels piece or the decoded pixel piece be called as processed pixels piece.Around the block of pixels to be encoded a plurality of pieces of encoded pixels can be arranged.
According to around the current pending block of pixels E three motion vectors in the motion vector of processed pixels piece A, block of pixels B, block of pixels C, block of pixels D obtain the motion vector predictor (MV of block of pixels E PRED, X, MV PRED, Y), (MVA X, MVA Y) be the motion vector of block of pixels A, (MVB X, MVB Y) be the motion vector of block of pixels B, (MVC X, MVC Y) be the motion vector of block of pixels C, (MVD X, MVD Y) be the motion vector of block of pixels D, subscript X represents the horizontal component of motion vector, subscript Y represents the vertical component of motion vector.
Select around the current pending block of pixels E three the motion vector of processed pixels piece obtain (MV1 X, MV1 Y), (MV2 X, MV2 Y), (MV3 X, MV3 Y), (MV1 X, MV1 Y), (MV2 X, MV2 Y), (MV3 X, MV3 Y) be respectively (MVA X, MVA Y), (MVB X, MVB Y), (MVC X, MVC Y), (MVD X, MVD Y) in one.
By MV1 X, MV2 X, MV3 XPrediction obtains temporary value TEMP X, as follows:
A) calculate ABSVAL12 X, ABSVAL23 X, ABSVAL13 X, ABSVAL12 wherein X=| MV1 X-MV2 X|, ABSVAL23 X=| MV2 X-MV3 X|, ABSVAL13 X=| MV1 X-MV3 X|, || expression takes absolute value;
B) if ABSVAL12 XLess than ABSVAL23 XAnd less than ABSVAL13 X, so temporary value TEMP X=MV1 X+ MV2 X
C) if ABSVAL23 XLess than ABSVAL12 XAnd less than ABSVAL13 X, so temporary value TEMP X=MV2 X+ MV3 X
D) if ABSVAL13 XLess than ABSVAL12 XAnd less than ABSVAL23 X, so temporary value TEMP X=MV1 X+ MV3 X
E) if ABSVAL12 XEqual ABSVAL13 XAnd less than ABSVAL23 X, so temporary value TEMP X=2 * MV1 X
F) if ABSVAL12 XEqual ABSVAL23 XAnd less than ABSVAL13 X, so temporary value TEMP X=2 * MV2 X
G) if ABSVAL23 XEqual ABSVAL13 XAnd less than ABSVAL12 X, so temporary value TEMP X=2 * MV3 X
H) otherwise, temporary value TEMP X=2 * MV1 X
According to temporary value TEMP XObtain the motion vector horizontal component predicted value MV of pending block of pixels E PRED, X, as follows:
MV PRED，X＝TEMP X÷2。
By MV1 Y, MV2 Y, MV3 YPrediction obtains temporary value TEMP Y, as follows:
A) calculate ABSVAL12 Y, ABSVAL23 Y, ABSVAL13 Y, ABSVAL12 wherein Y=| MV1 Y-MV2 Y|, ABSVAL23 Y=| MV2 Y-MV3 Y|, ABSVAL13 Y=| MV1 Y-MV3 Y|, || expression takes absolute value;
B) if ABSVAL12 YLess than ABSVAL23 YAnd less than ABSVAL13 Y, so temporary value TEMP Y=MV1 Y+ MV2 Y
C) if ABSVAL23 YLess than ABSVAL12 YAnd less than ABSVAL13 Y, so temporary value TEMP Y=MV2 Y+ MV3 Y
D) if ABSVAL13 YLess than ABSVAL12 YAnd less than ABSVAL23 Y, so temporary value TEMP Y=MV1 Y+ MV3 Y
E) if ABSVAL12 YEqual ABSVAL13 YAnd less than ABSVAL23 Y, so temporary value TEMP Y=2 * MV1 Y
F) if ABSVAL12 YEqual ABSVAL23 YAnd less than ABSVAL13 Y, so temporary value TEMP Y=2 * MV2 Y
G) if ABSVAL23 YEqual ABSVAL13 YAnd less than ABSVAL12 Y, so temporary value TEMP Y=2 * MV3 Y
H) otherwise, temporary value TEMP Y=2 * MV1 Y
According to temporary value TEMP YObtain the motion vector vertical component predicted value MV of pending block of pixels E PRED, Y, as follows:
MV PRED，Y＝TEMP Y÷2。
Embodiment:
If the piece of the encoded pixels C around the block of pixels E to be encoded is unavailable, can select (MV1 so X, MV1 Y)=(MVA X, MVA Y), (MV2 X, MV2 Y)=(MVB X, MVB Y), (MV3 X, MV3 Y)=(MVD x, MVD Y).And if (MVA X, MVA Y)=(1,2), (MVB X, MVB Y)=(3,2), (MVD X, MVD Y)=(7 ,-4), (MV so PRED, X, MV PRED, Y)=(2,2).
Motion-vector prediction device in the coding and decoding video comprises input unit, motion vector selection processing unit, motion-vector prediction processing unit and output device, as shown in Figure 2.Input unit 210 is used to accept to store around the current pending block of pixels motion vector of processed pixels piece.Motion vector selects the motion vector of the piece of processed pixels in 220 pairs of input units of processing unit to select to handle, and selects three motion vectors, comprising ALU 225 can realize this processing with comparator, selector.Three motion vectors after motion-vector prediction processing unit 230 usefulness motion vectors select to be handled carry out prediction processing to the motion vector of current pending block of pixels, comprising ALU 235 can realize this processing with multiplier, comparator, adder and shift unit.Output device 240 is used to store the motion vector predictor of the current pending block of pixels after the prediction processing and output is provided.
Input unit is selected to be connected by data/address bus between the processing unit with motion vector, transmits the motion vector of processed pixels piece; Motion vector is selected to be connected transmitting moving vector selection processing costs by data/address bus between processing unit and the motion-vector prediction processing unit; Be connected by data/address bus between motion-vector prediction processing unit and the output device, transmit the motion vector predictor of current pending block of pixels.
The prediction unit of motion vector can be used processor system in the above-mentioned coding and decoding video, microcontroller, and programmable logic device or microprocessor etc. are realized part or all of operation.Above-mentioned certain operations can realize that other operations simultaneously can realize with hardware with software.
For convenience's sake, these operations are described to the functional unit of different interconnection or different software modules.But this is dispensable.In some applications, these functional units or module can be integrated in single logical device, program or the operation, and do not have obvious limit.In any situation, the feature of functional unit and software module or description can independently realize, or reinstate hardware or software realization with other operations one.
The motion-vector prediction processing unit comprises motion vector storage device, adder, multiplier, the temporary value storage device of motion vector, motion vector difference absolute value generating apparatus, control signal generating apparatus, selector and output processing apparatus, as shown in Figure 3.Motion vector storage device 310 storage is used for the horizontal component of three motion vectors of prediction processing or vertical component or both, all is called as motion vector; Adder 320 is with the addition in twos respectively of three motion vectors; Multiplier 340 respectively multiply by 2 with three motion vectors, and the also available shift unit of this operation is realized; The result of the temporary value of motion vector storage device 330 storage adder outputs; The result of the temporary value of motion vector storage device 350 storage multiplier outputs; Motion vector difference absolute value generating apparatus 360 calculates the absolute difference of three motion vectors between in twos; Control signal generating apparatus 370 goes out the result according to the number of motion vector difference absolute value generating apparatus and generates control signal; Selector 380 selects the motion vector in the temporary value of the motion vector storage device 330 or 350 to keep in value according to control signal; Output processing apparatus 390 is done signed magnitude arithmetic(al) and division arithmetic with the temporary value of the motion vector of selecting, and also available shift operation replaces, and the motion vector predictor of the current pending block of pixels of output is provided.
Be connected the transmitting moving vector by data/address bus between motion vector storage device and the adder; Be connected the transmitting moving vector by data/address bus between motion vector storage device and the multiplier; Be connected the transmitting moving vector by data/address bus between motion vector storage device and the motion vector difference absolute value generating apparatus; Adder is kept between the value storage device with motion vector and is connected by data/address bus, transmits three motion vectors value of addition in twos respectively; Multiplier is kept between the value storage device with motion vector and is connected by data/address bus, transmits three motion vectors and respectively multiply by 2 value; Be connected by data/address bus between motion vector difference absolute value generating apparatus and the control signal generating apparatus, transmit three absolute difference that motion vector subtracts each other respectively in twos; Is connected by data/address bus between the temporary value of motion vector storage device and the selector, the transmitting moving vector is temporary to be worth; Be connected transmission of control signals by data/address bus between control signal generating apparatus and the selector; Be connected the temporary value of the motion vector that transmission is selected between selector and the output processing apparatus by data/address bus.
Above-mentioned motion-vector prediction processing unit can be used processor system, microcontroller, and programmable logic device or microprocessor etc. are realized part or all of operation.Above-mentioned certain operations can realize that other operations simultaneously can realize with hardware with software.
For convenience's sake, these operations are described to the functional unit of different interconnection or different software modules.But this is dispensable.In some applications, these functional units or module can be integrated in single logical device, program or the operation, and do not have obvious limit.In any situation, the feature of functional unit and software module or description can independently realize, or reinstate hardware or software realization with other operations one.

Claims (6)

1. the method for motion vector prediction in the coding and decoding video, according to around the current pending block of pixels E the motion vector of processed pixels piece A, block of pixels B, block of pixels C, block of pixels D obtain the motion vector predictor (MV of block of pixels E PRED, X, MV PRED, Y), (MVA X, MVA Y) be the motion vector of block of pixels A, (MVB X, MVB Y) be the motion vector of block of pixels B, (MVC X, MVC Y) be the motion vector of block of pixels C, (MVD X, MVD Y) be the motion vector of block of pixels D, subscript X represents the horizontal component of motion vector, subscript Y represents the vertical component of motion vector; It is characterized in that: select around the current pending block of pixels E three motion vector of processed pixels piece, i.e. (MV1 X, MV1 Y), (MV2 X, MV2 Y), (MV3 X, MV3 Y), (MV1 X, MV1 Y), (MV2 X, MV2 Y), (MV3 X, MV3 Y) be respectively (MVA X, MVA Y), (MVB X, MVB Y), (MVC X, MVC Y), (MVD X, MVD Y) in one, if the piece of the encoded pixels C around the block of pixels E to be encoded is unavailable, select (MV1 so X, MV1 Y)=(MVA X, MVA Y), (MV2 X, MV2 Y)=(MVB X, MVB Y), (MV3 X, MV3 Y)=(MVD X, MVD Y).
2. the method for motion vector prediction in a kind of coding and decoding video according to claim 1 is characterized in that: by MV1 X, MV2 X, MV3 XPrediction obtains temporary value TEMP X, as follows:
A) calculate ABSVAL12 X, ABSVAL23 X, ABSVAL13 X, ABSVAL12 wherein X=| MV1 X-MV2 X|, ABSVAL23 X=| MV2 X-MV3 X|, ABSVAL13 X=| MV1 X-MV3 X|, || expression takes absolute value;
B) if ABSVAL12 XLess than ABSVAL23 XAnd less than ABSVAL13 X, so temporary value TEMP X=MV1 X+ MV2 X
C) if ABSVAL23 XLess than ABSVAL12 XAnd less than ABSVAL13 X, so temporary value TEMP X=MV2 X+ MV3 X
D) if ABSVAL13 XLess than ABSVAL12 XAnd less than ABSVAL23 X, so temporary value TEMP X=MV1 X+ MV3 X
E) if ABSVAL12 XEqual ABSVAL13 XAnd less than ABSVAL23 X, so temporary value TEMP X=2 * MV1 X
F) if ABSVAL12 XEqual ABSVAL23 XAnd less than ABSVAL13 X, so temporary value TEMP X=2 * MV2 X
G) if ABSVAL23 XEqual ABSVAL13 XAnd less than ABSVAL12 X, so temporary value TEMP X=2 * MV3 X
H) otherwise, temporary value TEMP X=2 * MV1 X
3. the method for motion vector prediction in a kind of coding and decoding video according to claim 2 is characterized in that: according to temporary value TEMP XObtain the motion vector horizontal component predicted value MV of pending block of pixels E PRED, X, as follows:
MV PRED，X＝TEMP X÷2。
4. the method for motion vector prediction in a kind of coding and decoding video according to claim 1 is characterized in that: by MV1 Y, MV2 Y, MV3 YPrediction obtains temporary value TEMP Y, as follows:
A) calculate ABSVAL12 Y, ABSVAL23 Y, ABSVAL13 Y, ABSVAL12 wherein Y=| MV1 Y-MV2 Y|, ABSVAL23 Y=| MV2 Y-MV3 Y|, ABSVAL13 Y=| MV1 Y-MV3 Y|, || expression takes absolute value;
B) if ABSVAL12 YLess than ABSVAL23 YAnd less than ABSVAL13 Y, so temporary value TEMP Y=MV1 Y+ MV2 Y
C) if ABSVAL23 YLess than ABSVAL12 YAnd less than ABSVAL13 Y, so temporary value TEMP Y=MV2 Y+ MV3 Y
D) if ABSVAL13 YLess than ABSVAL12 YAnd less than ABSVAL23 Y, so temporary value TEMP Y=MV1 Y+ MV3 Y
E) if ABSVAL12 YEqual ABSVAL13 YAnd less than ABSVAL23 Y, so temporary value TEMP Y=2 * MV1 Y
F) if ABSVAL12 YEqual ABSVAL23 YAnd less than ABSVAL13 Y, so temporary value TEMP Y=2 * MV2 Y
G) if ABSVAL23 YEqual ABSVAL13 YAnd less than ABSVAL12 Y, so temporary value TEMP Y=2 * MV3 Y
H) otherwise, temporary value TEMP Y=2 * MV1 Y
5. the method for motion vector prediction in a kind of coding and decoding video according to claim 4 is characterized in that according to temporary value TEMP YObtain the motion vector vertical component predicted value MV of pending block of pixels E PRED, Y, as follows:
MV PRED，Y＝TEMP Y÷2。
6. the device that is used for the method for motion vector prediction of the described a kind of coding and decoding video of claim 1 is characterized in that it comprises:
Be used to accept to store around the current pending block of pixels input unit of the motion vector of processed pixels piece (210);
The motion vector that the motion vector of the piece of processed pixels in the input unit is selected is selected processing unit (220);
The motion vector of current pending block of pixels is carried out the motion-vector prediction processing unit (230) of prediction processing with three motion vectors after the motion vector selection processing;
Be used for the output device (240) that the storing moving vector carries out the motion vector predictor of the current pending block of pixels after the prediction processing and output is provided;
Input unit (210) is selected to be connected by data/address bus between the processing unit (220) with motion vector, transmits the motion vector of processed pixels piece; Motion vector is selected to be connected by data/address bus between processing unit (220) and the motion-vector prediction processing unit (230), transmits three motion vectors; Be connected by data/address bus between motion-vector prediction processing unit (230) and the output device (240), transmit the motion vector predictor of current pending block of pixels.
CN 03143429 2003-09-27 2003-09-27 Motion vector predicting method and device in video coding-decoding Expired - Lifetime CN1216496C (en)

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