Method and device for selecting context model of quantization coefficient end flag bit

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United States of America

PATENT NO 11949868
SERIAL NO

17422297

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Abstract

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Embodiments of the present disclosure provide a method and device for selecting a context model of a quantized coefficient end flag. The method comprises: obtaining a scanning position POS of a non-zero coefficient corresponding to current quantized coefficient end flag in a specific scanning order; wherein the scanning position POS is a subscript of the non-zero coefficient in the scanning order; configuring a first context model array, and using a fixed value as the base to calculate the logarithmic value of the value of the scanning position POS plus 1, and according to the logarithmic value, selecting a first context model from the first context model array; and using the first context model to encode or decode a binary symbol of the current quantized coefficient end flag. According to the technical solution of the present application, it is able to improve encoding and decoding efficiency for a quantized coefficient end flag, thereby further improve the efficiency of video encoding and decoding.

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Patent Owner(s)

Patent OwnerAddress
PEKING UNIVERSITY SHENZHEN GRADUATE SCHOOL518055 ROOM 208 BUILDING H BEIDA PARK SHENZHEN UNIVERSITY TOWN XILI STREET NANSHAN DISTRICT SHENZHEN CITY GUANGDONG PROVINCE SHENZHEN CITY GUANGDONG PROVINCE 518055

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gao, Wen Shenzhen, CN 329 3875
Wang, Ronggang Shenzhen, CN 78 337
Wang, Zhenyu Shenzhen, CN 189 678

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