Patent ID: 11900637
Assignee: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 5:
6. The image processing method of claim 1, wherein
determining the third decomposed sub-band information according to the first decomposed sub-band information and the second decomposed sub-band information comprises:
for a set high frequency band in the third decomposed sub-band information, determining the frequency band coefficient matrix of the set high frequency band in the second decomposed sub-band information as the frequency band coefficient matrix of a corresponding set high frequency band in the third decomposed sub-band information;
for each frequency band in the third decomposed sub-band information except the set high frequency band, determining the frequency band coefficient matrix of the third decomposed sub-band information in each frequency band, as a sum of a fifth matrix and a sixth matrix, in which the fifth matrix is a product of a corresponding weighting coefficient with the frequency band coefficient matrix of the first decomposed sub-band information on the corresponding frequency band, and the sixth matrix is a product of a corresponding weighting coefficient with the frequency band coefficient matrix of the second decomposed sub-band information on the corresponding frequency band;
wherein a sum of the corresponding weighting coefficients of the first decomposed sub-band information and the second decomposed sub-band information on the same frequency band is 1; and the corresponding weighting coefficient of the second decomposed sub-band information on a frequency band is negatively correlated to a number of decomposition levels to which the frequency band belongs.