Patent ID: 8238688

Claim:
A method for enhancing a perceptibility of an image, comprising: processing the image in accordance with a first luminance characteristic and a second luminance characteristic of the image, wherein a plurality of pixels with the first luminance characteristic are brighter than a plurality of pixels with the second luminance characteristic; and generating an enhanced image to a display device by performing at least the following steps: compressing the plurality of pixels with the first luminance characteristic; and adjusting the plurality of pixels with the second luminance characteristics; wherein the step of adjusting the plurality of pixels with the second luminance characteristic comprises: deriving a first luminance layer of the image, wherein the first luminance layer has a first luminance range; defining a second luminance range which is different from the first luminance range, wherein the second luminance range has an upper luminance threshold value and a lower luminance threshold value; and boosting a dark region of the first luminance layer to brighter than the lower luminance threshold value and compressing a bright region of the first luminance layer to darker than the upper luminance threshold value to thereby generate a second luminance layer fitted into the second luminance range.