In chapter 4, the analysis of the generating background and problems confronted to the Color Correction is done. GW (Gray World), ACE (Automatic Color Equalization), the mainly algorithms of the Color Correction , are introduced.
第四章是色彩校正技术,在分析了色彩校正技术产生的背景和所面临的问题后,介绍了一些重要的校正算法,如GW(Gray World),ACE(Automatic Color Equalization)等。
The problem of the color image rendering was researched in this paper. Based on investigation and analysis of current situation in this field both in our country and abroad, the progressive algorithms and new ones were proposed pointing at kernel techniques such as Tone mapping curves, Tone mapping operators, Retinex and Automatic color equalization.
Section 4 discusses the techniques that are used to render a finished model, including the removal of occlusions and a color equalization method.
Given this information, the system can perform color equalization between different images, as well as between different surfaces within each image.
After proper calibration and color equalization, we estimate disparity using a collection of cues.
ACE is an automatic color equalization technique proposed by A.Rizzi. The proposed algorithm here improved ACE by using convolution technique to speed up the processing. In the mapping processing, we employed an improved gamma functions with changing parameters to enhance the high dynamic range images. A comparison has been made among the ACE, MSR and the proposed algorithm, and the results show the efficiency and the practical value of the algorithm.