Perancangan Dan Pembuatan Program Untuk Menghilangkan Efek Backlight Dalam Sebuah Image Di Luar Ruangan Berdasarkan Teori Retinex

A lot of digital images processing methods that were developed to meet the needs of digital image processing which began to appear in various fields of science. In outdoors image retrieval, often arise problems, the backlight effect, that caused the digital image processing became more difficult. Therefore digital image processing applications will be made to meet the above requirement, which is based on retinex theory.Retinex is algorithm to eliminate the effects of illumination light from front/rear, and repair colors in digital image by eliminating color lighting that can make changes in digital image. In this study, digital image processed by retinex and then flatten the contrast with histogram equalization technique to eliminate the backlight effect on the digital image. Based on the test results, the application can display digital images with the backlight effect is reduced and the detail is more visible in the area that covered with the backlight shadow. In another test with images that have no backlight and bright, after the retinex process, the results is not satisfying, the images are broken, fade color and the color changes significantly

A novel illumination compensation scheme for sprite coding

Author name used in this publication: Dagan FengCentre for Multimedia Signal Processing, Department of Electronic and Information EngineeringRefereed conference paper2004-2005 > Academic research: refereed > Refereed conference paperVersion of RecordPublishe

Retinex theory for color image enhancement: A systematic review

A short but comprehensive review of Retinex has been presented in this paper. Retinex theory aims to explain human color perception. In addition, its derivation on modifying the reflectance components has introduced effective approaches for images contrast enhancement. In this review, the classical theory of Retinex has been covered. Moreover, advance and improved techniques of Retinex, proposed in the literature, have been addressed. Strength and weakness aspects of each technique are discussed and compared. An optimum parameter is needed to be determined to define the image degradation level. Such parameter determination would help in quantifying the amount of adjustment in the Retinex theory. Thus, a robust framework to modify the reflectance component of the Retinex theory can be developed to enhance the overall quality of color images