Method of predicting a motion vector for a current block in a current picture
AssigneeLG Electronics Inc.
InventorsByeong Moon Jeon, Yoon Seong Soh
Life of this patent
Estimating the term…
Abstract
In one embodiment, the apparatus includes a decoder. The decoder is configured to obtain first and second motion vectors of a block other than the current block. The other block neighbors the current block at one of a left, top and top right position. The decoder is configured to determine first and second motion vectors of the current block using the first and second motion vectors of the other block such that the first motion vector of the current block has a same direction as the first motion vector of the other block and the second motion vector of the current block has a same direction as the second motion vector of the other block.
Claims3
A method performed by a moving picture encoding device, the method comprising:
- obtaining, by the moving picture encoding device, direction information by comparing picture display order information of a current picture with picture display order information of each reference picture,
- wherein the direction information indicates whether each reference picture is in forward direction or not with respect to the current picture including a current block, and
- wherein the picture display order information represents a display order represented by a picture order count value;
- selecting, by the moving picture encoding device and based on the direction information, a motion vector from two motion vectors of a block coded in a bi-predictive mode;
- obtaining, by the moving picture encoding device, a predicted motion vector of the current block based on the selected motion vector;
- and
- encoding, by the moving picture encoding device, motion vector difference information of the current block based on the predicted motion vector.
A method performed by a moving picture encoding device, the method comprising:
- obtaining, by the moving picture encoding device, direction information by comparing a picture order count (POC) value of a current picture with a POC value of each reference picture,
- wherein the direction information indicates whether each reference picture is in forward direction or not with respect to the current picture including a current block;
- selecting, by the moving picture encoding device and based on the direction information, a motion vector from two motion vectors of a block coded in a bi-predictive mode;
- obtaining, by the moving picture encoding device, a predicted motion vector of the current block based on the selected motion vector;
- and
- encoding, by the moving picture encoding device, motion vector difference information of the current block based on the predicted motion vector.
A method performed by a moving picture encoding device, the method comprising:
- obtaining, by the moving picture encoding device, direction information by comparing picture order count information of a current picture with picture order count information of each reference picture,
- wherein the direction information indicates whether each reference picture is in forward direction or not with respect to the current picture including a current block, and
- wherein the picture order count information represents a display order of the picture;
- selecting, by the moving picture encoding device and based on the direction information, a motion vector from two motion vectors of a block coded in a bi-predictive mode;
- and
- predicting, by the moving picture encoding device, a motion vector of the current block based on the selected motion vector.
Dependencies are inferred from the claim text.