Compensation data determination method, brightness compensation method, device and storage media

A compensation data determination device, comprising:

• a first acquisition module configured to obtain first brightness data when a first color image is displayed on a display panel and second brightness data when a second color image is displayed on the display panel;
• a first conversion module configured to perform a spatial domain-frequency domain conversion on the first brightness data to obtain a first frequency component corresponding to the first color image, wherein the first frequency component includes a first sub-frequency component and a second sub-frequency component, and a frequency of the first sub-frequency component is lower than a frequency of the second sub-frequency component;
• a second conversion module configured to perform the spatial domain-frequency domain conversion on the second brightness data to obtain a second frequency component corresponding to the second color image, wherein the second frequency component includes a third sub-frequency component and a fourth sub-frequency component, and a frequency of the third sub-frequency component is lower than a frequency of the fourth sub-frequency component;
• a first restoration module configured to use the first sub-frequency component to replace the third sub-frequency component and obtain third brightness data of the second color image based on restoration of the first sub-frequency component and the fourth sub-frequency component;
• and
• a first determination module configured to determine first compensation data based on the third brightness data.