Patent ID: 7995857
Filing Date: 2011-08-09
Classification: G06T,H04N

Abstract:
1. An image processing apparatus, comprising: an edge detection module, for performing image edge detection for each pixel in an original image data and generating at least one edge detection result for a target pixel in the original image data; a step-wise gain controlling module, coupled to the edge detection module, for determining at least one gain coefficient of the target pixel according to the edge detection result, wherein when edge detection results are within a first region, the step-wise gain controlling module outputs a same first gain coefficient in response to each of the edge detection results, and when edge detection results are within a second region different from the first region, the step-wise gain controlling module outputs a same second gain coefficient in response to each of the edge detection results, where the second gain coefficient is different from the first gain coefficient; and a calculation module, coupled to the step-wise gain controlling module, for adjusting an original gray value of the target pixel to generate an output gray value of the target pixel according to the gain coefficient.