An adaptive image processing method includes: defining a pixel zone involving a target pixel according to a color corresponding to the target pixel; selecting a plurality of adjacent pixels from the pixel zone, wherein the adjacent pixels and the target pixel correspond to the same color; acquiring a defect pixel threshold value by calculating a product of a sum of absolute differences between each pixel of the plurality of adjacent pixels and a defected pixel compensation ratio; acquiring an adjacent difference value by calculating a sum of absolute differences between the target pixel and each pixel of the plurality of adjacent pixels; and determining whether the target pixel is a defect pixel by comparing the defect pixel threshold value with the adjacent difference value.