Patent ID: 7684638
Filing Date: 2010-03-23
Classification: H04N

Abstract:
1. A computer readable storage medium storing a set of instructions executable by a computer system for dynamically adjusting the contrast of a first image signal which comprises a plurality of pixels, the set of instructions comprising: instructions for receiving the first image signal and generating a plurality of adjusting signals based on the first image signal, wherein each pixel of the first image signal corresponds to one of the plurality of adjusting signals, respectively; instructions for receiving a first set of adjusting signals among the plurality of adjusting signals, comprising: instructions for generating an average brightness signal according to the brightness signal of each of the first set of adjusting signals; and instructions for selecting the first gain curve from a plurality of gain curves pre-stored in the selection module according to the average brightness signal; and instructions for generating a second image signal according to the first gain curve and the plurality of adjusting signals; wherein the instructions for generating the second image signal comprises: instructions for generating a plurality of normalized adjusting signals according to the plurality of adjusting signals; instructions for generating a plurality of gain signals according to the plurality of normalized adjusting signals and the first gain curve; and instructions for generating the second image signal according to the plurality of gain signals.