US 12,489,922 B2
Image processing method and apparatus, electronic device, and storage medium
Xiaobo Li, Shanghai (CN); and Tianxiao Ye, Shanghai (CN)
Assigned to SHANGHAI BILIBILI TECHNOLOGY CO., LTD., Shanghai (CN)
Appl. No. 18/294,053
Filed by SHANGHAI BILIBILI TECHNOLOGY CO., LTD., Shanghai (CN)
PCT Filed Jun. 14, 2022, PCT No. PCT/CN2022/098600
§ 371(c)(1), (2) Date Jan. 31, 2024,
PCT Pub. No. WO2023/011005, PCT Pub. Date Feb. 9, 2023.
Claims priority of application No. 202110891796.4 (CN), filed on Aug. 4, 2021.
Prior Publication US 2025/0088666 A1, Mar. 13, 2025
Int. Cl. H04N 19/60 (2014.01); H04N 19/119 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/60 (2014.11) [H04N 19/119 (2014.11); H04N 19/176 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method of processing images, comprising:
performing frequency domain transform on a target image and obtaining a frequency coefficient matrix of the target image, wherein the frequency coefficient matrix comprises at least one non-zero frequency coefficient;
determining a non-zero block in the frequency coefficient matrix based on a position of the at least one non-zero frequency coefficient;
determining a transform submatrix corresponding to a size of the non-zero block and a transposed submatrix corresponding to the size of the non-zero block; and
determining an inverse transform result of the frequency coefficient matrix based on the transform submatrix, the non-zero block, and the transposed submatrix.