Image processing method, image processing device, display apparatus and non-volatile computer readable storage medium

An image processing device, comprising:

• an acquisition module configured to acquire a first region having a first brightness value and a second region having a second brightness value in an image to be processed, wherein the first brightness value of the first region is larger than the second brightness value of the second region, the first region is adjacent to the second region, and the first region and the second region have a common boundary;
• a transition region determination module configured to determine one or more brightness transition regions in at least one of the first region or the second region, wherein the one or more brightness transition regions are located in at least one of the first region or the second region and located at a side close to the boundary common to the first region and the second region;
• a brightness value determination module configured to determine one or more transition brightness values according to the first brightness value of the first region and the second brightness value of the second region, wherein the one or more transition brightness values are smaller than or equal to the first brightness value of the first region and larger than or equal to the second brightness value of the second region;
• and
• a brightness setting module configured to set brightness of each of the one or more brightness transition regions to be a corresponding one of the one or more transition brightness values.