MOTION VECTOR PREDICTION METHOD AND SYSTEM BASED ON QUADRATIC POLYNOMIAL AND COMPUTER MEDIUM

• Main Authors: TENG, Bo, LIU, Xingyu, YANG, Guangmang, LUO, Weijie
• Format: Patent
• Language: Chinese; English; French
• Published: 09.06.2022
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

Embodiments of the present application provide a motion vector prediction method and system based on a quadratic polynomial and a computer medium. The method comprises: by means of block-based motion estimation, sequentially determining a current motion block, a first forward matching block, and a second forward matching block according to a reverse chronological order; constructing a quadratic polynomial motion model, and determining model parameters of the quadratic polynomial motion model according to pixel point positions at the same positions in the current motion block, the first forward matching block, and the second forward matching block; determining a prediction reference block of a current encoding block according to the quadratic polynomial motion model having the determined model parameters; obtaining a motion vector prediction value according to the prediction reference block; and finally, performing video encoding and decoding according to the obtained motion vector prediction value, so that th