Adaptive decision method of motion vector search range
AssigneeLG Electronics Inc.
InventorMin Cheol Hong
Life of this patent
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Abstract
An adaptive decision method of a motion vector search range is disclosed in which motion vector values of blocks adjacent to a block where a motion vector is to be decided are decided and then a motion vector search range of the specific block is decided on the basis of the decided motion vector values of the adjacent blocks. Therefore, the present invention provides that complexity of motion vector estimation can be considerably reduced for a moving picture service on a real time basis, and complexity of motion vector estimation can be also considerably reduced without affecting a compression efficiency.
Claims22
An adaptive decision method of motion vector search range comprising the steps of:
- deciding motion vector values of blocks adjacent to a specific block;
- and
- deciding a motion vector search range of the specific block on the basis of the decided motion vector values of the adjacent blocks.
An adaptive decision method of a motion vector search range comprising the steps of:
- deciding motion vector values of blocks adjacent to a block where a motion vector is to be decided;
- and
- deciding a motion vector search range of the block where a motion vector is to be decided on the basis of the decided motion vector values of the adjacent blocks.
An adaptive decision method of a motion vector search range comprising the steps of:
- deciding motion vector values of blocks adjacent to a specific block where a motion vector is to be decided;
- deciding a maximum range value of local motion vector of the specific block on the basis of the decided motion vector values of the adjacent blocks;
- defining a minimum value of motion vector of the specific block;
- computing a maximum value by comparing the decided maximum range value of the local motion vector and the defined minimum value of the motion vector, and deciding the computed maximum value as a maximum search range value for the motion vector of the specific block;
- and
- deciding a minimum value of the maximum search range value for the motion vector of the specific block and a search range value previously defined by a user, as a final maximum search range value for motion vector of the specific block.
An adaptive decision method of a motion vector search range in a motion vector estimation of a video coder, comprising the steps of:
- deciding motion vector values in horizontal and vertical directions for blocks adjacent to a block where a motion vector is to be decided;
- deciding a maximum range value of local motion vector in horizontal and vertical direction of the specific block on the basis of the motion vector values of the adjacent blocks;
- defining a minimum value of motion vector in horizontal and vertical direction of the specific block;
- computing a maximum value by comparing the decided maximum range value of the local motion vector and the defined minimum value of the motion vector and deciding the computed maximum value as a maximum search range value for motion vector of the specific block;
- and deciding a minimum value of the maximum search range value for the decided motion vector of the specific block and a search range value previously defined by a user, as a final maximum search range value for motion vectors of the specific block.
Dependencies are inferred from the claim text.