Color Image Enhancement Using Hybrid Retinex Algorithm

• Main Authors: Yun-Ju Li, 李昀儒
• Other Authors: Taoi Hsu
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/21207789503399867611

碩士 === 世新大學 === 圖文傳播暨數位出版學研究所(含碩專班) === 93 === An image enhancement model based on the Human Visual System is proposed. Image enhancement processing normally decreases image quality in some aspects, because the representation of color space is not linear. The Retinex algorithm can be generally used in mamy kinds of images by considering human visual perception. The existing Retinex algorithm both Single-Scale Retinex or Multiple-Scale Retinex, do not take into account the local variations of the contrast within an image scence. Therefore the performance of those models are limited. A modified Retinex algorithm by using non-isotropic Gaussian kernel filters to fit the human visual system and add the the image quality is proposed. A number of experiments are conducted to demonstrate the performance of the proposed algorithm.