Patent ID: 11863740
Assignee: SUNGKYUNKWAN UNIVERSITY FOUNDATION FOR CORPORATE COLLABORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. A non-transitory computer-readable recording medium storing a bit stream which is generated by an image encoding method with an encoding apparatus, the image encoding method comprising:
(a) generating a prediction block relating to a current block in a current picture by performing inter prediction on the current block;
(b) identifying a selected motion vector from the current picture to a first decoding reference picture, the selected motion vector being encoded into the bit stream of a current picture, the first decoding reference picture being different from the current picture;
(c) calculating a calculated motion vector from the current picture to a second decoding reference picture by scaling the selected motion vector based on a first temporal distance between the current picture and the first decoding reference picture and a second temporal distance between the current picture and the second decoding reference picture, the calculated motion vector being used for inter prediction of the current block belonging to the current picture, the second decoding reference picture being different from the first decoding reference picture;
(d) generating a residual block relating to the current block based on the prediction block; and
(e) encoding the residual block into the bit stream,
wherein the calculating the calculated motion vector is performed based on whether a prediction direction for the selected motion vector is identical to or different from a prediction direction for the calculated motion vector, and
wherein the residual block is generated by performing quantization for transform coefficients relating to the residual block.