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

Claim 13:
14. The image processing apparatus of claim 8, wherein
the processor is configured to:
determine the frequency band coefficient matrix of each frequency band in the third decomposed sub-band information as a sum of a seventh matrix and an eighth matrix, in which the seventh matrix is a dot product matrix of the frequency band coefficient matrix of the corresponding frequency band in the first decomposed sub-band information with a weighting coefficient matrix of the corresponding frequency band in the first decomposed sub-band information, and the eighth matrix is a dot product matrix of the frequency band coefficient matrix of the corresponding frequency band in the second decomposed sub-band information with a weighting coefficient matrix of the corresponding frequency band in the second decomposed sub-band information;
wherein a weighting coefficient value of each pixel point in a weighting coefficient matrix of each frequency band in the first decomposed sub-band information is calculated and obtained according to a first variance corresponding to each pixel point in a decomposed image of the first gray-scale component image in the corresponding frequency band;
wherein a weighting coefficient value of each pixel point in the weighting coefficient matrix of each frequency band in the second decomposed sub-band information is calculated and obtained according to a second variance corresponding to each pixel point in a decomposed image of the second gray-scale component image in the corresponding frequency band;
wherein a sum of the weighting coefficients corresponding to the same pixel point in the decomposed images of the first gray-scale component image and the second gray-scale component image in the same frequency band is 1; the weighting coefficient corresponding to each pixel point in the decomposed image of the first gray-scale component image on each frequency band is positively correlated with the first variance corresponding to the corresponding pixel point, and the weighting coefficient corresponding to each pixel point in the decomposed image of the second gray-scale component image on each frequency band is positively correlated with the second variance corresponding to the corresponding pixel point.