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1. (WO2018183902) ZERO BLOCK DETECTION USING ADAPTIVE RATE MODEL

Pub. No.:    WO/2018/183902    International Application No.:    PCT/US2018/025483
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Sat Mar 31 01:59:59 CEST 2018
IPC: H04N 19/124
H04N 19/115
H04N 19/147
H04N 19/149
H04N 19/172
H04N 19/503
H04N 19/593
Applicants: QUALCOMM INCORPORATED
Inventors: YU, Yang
CHONG, In Suk
WANG, Xianglin
KARCZEWICZ, Marta
Title: ZERO BLOCK DETECTION USING ADAPTIVE RATE MODEL
Abstract:
A video coding device may be configured to estimate, based on a combination of a first parameter and a number of nonzero coefficients in a frame, a number of bits for nonzero coefficients of the frame, to encode the frame based on the estimated number of bits for the nonzero coefficients, to collect an actual number of bits used to encode the nonzero coefficients of the frame and an actual number of the nonzero coefficients in the frame, to update, based on the actual number of bits used to encode the nonzero coefficients of the frame and the actual number of nonzero coefficients in the frame, only the first parameter to form an updated first parameter, to form a rate estimation model using the updated first parameter and a second parameter, and to select, based on the rate estimation model, a coding mode for each block in the frame.