US 12,489,898 B2
Context adaptive binary arithmetic coding (CABAC) probability estimation for video coding
Jie Dong, Sunnyvale, CA (US); Vadim Seregin, San Diego, CA (US); and Marta Karczewicz, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Dec. 22, 2022, as Appl. No. 18/145,399.
Claims priority of provisional application 63/266,623, filed on Jan. 10, 2022.
Prior Publication US 2023/0224464 A1, Jul. 13, 2023
Int. Cl. H04N 19/13 (2014.01); H04N 19/184 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/13 (2014.11) [H04N 19/184 (2014.11); H04N 19/70 (2014.11)] 30 Claims
OG exemplary drawing
 
1. A method of decoding video data, the method comprising:
receiving bin values according to a context model, wherein the context model includes one or more probability states and the bin values correspond to one or more syntax elements of the video data;
determining a first shift value based on the received bin values;
determining a second shift value based on the received bin values;
updating a first state variable based on the first shift value;
updating a second state variable based on the second shift value;
determining, for a next bin to be decoded, a probability state for the context model based on the first state variable and the second state variable;
context decoding the next bin to be decoded based on the probability state; and
determining values for the one or more syntax elements based on the received bin values and the context decoded next bin value.