Method for coding motion vector using 2-dimensional minimum bitrate predicting technique
AssigneeLG Electronics Inc.
InventorsHyun Duk Cho, Sung Deuk Kim
Life of this patent
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Abstract
A method for coding a motion vector using a 2-dimensional minimum bitrate predicting technique is disclosed. A mode information (MODE) commonly adopted to the factors ‘X’ and ‘Y’ are transmitted to thereby reduce its transmission burden by using the two-dimensional minimum bitrate predicting technique, so that a coding efficiency of a motion vector can be improved. In addition, the two-dimensional MVD information coding method is proposed for the low transfer rate mobile image which is very small and has very small motion, so that even if a distribution characteristic of the MVD information is changed according to the minimum bitrate prediction, a coding efficiency of a major motion vector can be improved.
Claims31
A method for coding a motion vector comprising the steps of:
- computing two-dimensional prediction error information by using a motion vector to be coded and the n (n≧1) number of neighboring motion vectors;
- selecting prediction error information having the minimum bitrate from the computed prediction error information, wherein the prediction error information of minimum bitrate includes prediction error information of minimum bitrate applied to a factor ‘X’ and prediction error information of minimum bitrate applied to a factor ‘Y’;
- obtaining mode information indicative of a neighboring motion vector which has occurred the prediction error information of the minimum bitrate;
- and
- coding the obtained prediction error information of the minimum bitrate and the mode information.
A method for coding a motion vector comprising the steps of:
- computing two-dimensional prediction error information by using a motion vector to be coded and the n (n≧1) number of neighboring motion vectors;
- selecting prediction error information having the minimum bitrate from the computed prediction error information;
- obtaining mode information indicative of a neighboring motion vector in which has occurred the prediction error information of the minimum bitrate, wherein the mode information includes mode information of a factor ‘X’ and mode information of a factor ‘Y’;
- and
- coding the obtained prediction error information of the minimum bitrate and the mode information.
A method for coding a motion vector comprising the steps of:
- computing two-dimensional prediction error information by using a motion vector to be coded and the n (n≧1) number of neighboring motion vectors;
- selecting prediction error information having the minimum bitrate from the computed prediction error information;
- obtaining mode information indicative of a neighboring motion vector in which has occurred the prediction error information of the minimum bitrate, wherein the mode information of a factor ‘X’ and a factor ‘Y’ are sequentially linked;
- and
- coding the obtained prediction error information of the minimum bitrate and the mode information.
A method for coding a motion vector comprising the steps of:
- computing prediction error information between a motion vector to be coded and the n (n≧1) number of neighboring motion vectors;
- selecting prediction error information of the minimum bitrate from the computed prediction error information;
- checking whether factors of ‘X’ and ‘Y’ of the obtained prediction error information of the minimum bitrate are ‘0’ and coding the prediction error information of the minimum bitrate;
- and
- coding mode information indicative of a neighboring motion vector which has generated the prediction error information of the minimum bitrate.
A method comprising:
- computing two-dimensional prediction error information based on a motion vector and neighboring motion vectors;
- selecting prediction error information from the computed two-dimensional prediction error information, wherein the selected prediction error information of the minimum bitrate includes prediction error information of minimum bitrate applied to an ‘X’ factor and prediction error information of minimum bitrate applied to a ‘Y’ factor;
- obtaining mode information indicative of a neighboring motion vector used with the selected prediction error information;
- and
- coding the selected prediction error information and the obtained mode information.
A method comprising:
- computing two-dimensional prediction error information based on a motion vector and neighboring motion vectors;
- selecting prediction error information from the computed two-dimensional prediction error information;
- obtaining mode information indicative of a neighboring motion vector used with the selected prediction error information, wherein the mode information includes mode information of an ‘X’ factor and mode information of a ‘Y’ factor;
- and
- coding the selected prediction error information and the obtained mode information.
A method comprising:
- computing prediction error information between a motion vector and neighboring motion vectors;
- selecting prediction error information from the computed prediction error information;
- checking whether an ‘X’ factor and a ‘Y’ factor of the selected prediction error information are ‘0’ and coding the selected prediction error information based on the checking;
- and
- coding mode information indicative of a neighboring motion vector used with the selected prediction error information.
Dependencies are inferred from the claim text.