Apparatus and method for image analysis and image display

An apparatus and a method for image analysis and image display are provided. The image display apparatus includes a storage device, a processor, and a display. The storage device stores at least one gain table. Each gain table includes a plurality of gain values. There is a corresponding relationship between the plurality of gain values and a plurality of pixels of an image. For each gray level value of each of the pixels, the processor determines a gain value corresponding to the gray level value according to the at least one gain table. In addition, the processor compensates the image according to the gain values corresponding to the gray level values. The display displays the compensated image.