Patent ID: 7916160

Claim:
An image processing method for adjusting gray levels of an image signal inputted to a flat display panel (FDP), comprising steps of: storing a panel characteristic look-up table (LUT), the panel characteristic LUT being pre-established based on a brightness/gray level analysis process, a standard gamma analysis process, and a color temperature/color deviation analysis process; and receiving the image signal, and adjusting gray levels of the image signal according to the panel characteristic LUT, so as to output an adjusted image signal complying with a panel characteristic of the FDP; wherein the panel characteristic LUT is established by the following steps: (a) generating a first output gray level corresponding to an input gray level of the image signal according to the standard gamma analysis process; (b) generating a second output gray level corresponding to the first output gray level in step (a) according to a gain LUT established by the color temperature/color deviation analysis process; (c) generating a third output gray level corresponding to the second output gray level in step (b) according to a gray level linear LUT established by the brightness/gray level analysis process; (d) generating a fourth output gray level corresponding to the third output gray level in step (c) according to the standard gamma analysis process; and (e) recording the fourth output gray level in step (d) and the corresponding input gray level in step (a) in the panel characteristic LUT.