Calculation method for prediction motion vector
AssigneeLG Electronics Inc.
InventorsByeong Moon Jeon, Yoon Seong Soh
Life of this patent
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Abstract
A method for calculating a prediction motion vector of a block to be coded, by performing a median operation using motion vectors of neighboring blocks. If one of the neighboring blocks has motion vectors MV1 and MV2, direction (forward or backward) information of reference pictures referred to, respectively, by the motion vectors are acquired and one of the motion vectors is selected with reference to the acquired direction information. Then, the median operation including the selected motion vector is performed to obtain the prediction motion vector of the block to be coded.
Claims1
A method of predicting a motion vector for a current block in a current picture by a moving picture decoding device, the method comprising:
- obtaining, by the moving picture decoding device, a direction of a reference picture of the current picture, based on a comparison of a display order of the reference picture and a display order of the current picture;
- obtaining, by the moving picture decoding device, at least three forward motion vectors for at least three blocks other than the current block based on the direction of the reference picture;
- predicting, by the moving picture decoding device, a forward motion vector for the current block by using a median operation of the at least three forward motion vectors;
- and
- decoding the current block in the current picture using the predicted forward motion vector for the current block.
Dependencies are inferred from the claim text.