Title :
Automatic illumination compensation of color photos
Author :
Lin, Jzau-Sheng ; Liu, Ping-Jui ; Liao, Yu-Yi ; Tai, Shen-Chuan
Author_Institution :
Dept. of Comput. Sci. & Inf. Eng., Nat. Chin-Yi Univ. of Technol., Taichung, Taiwan
Abstract :
We present the novel method for automatic illumination compensation of color photos. Firstly, we suppose the photo has its own reference luminance level to get the characteristic luminance of each pixel by subtracting reference luminance level from original luminance. Next, the calibrated luminance is obtained by adjusting the characteristic luminance according to expected target luminance. The straight lines or oblique lines in photo are causing the HALO artifact. Therefore, the proposed method also reduces the HALO artifact using applying alpha blending original luminance and reference luminance level. Finally, we also provide the different resulted photos that are based on human perception by applying various proportions of alpha blending original image and fix layer.
Keywords :
image colour analysis; HALO artifact; alpha blending original luminance; automatic illumination compensation; calibrated luminance; characteristic luminance; color photos; reference luminance level; Calibration; Histograms; Humans; Image coding; Image color analysis; Lighting; Pixel; HALO artifact; HSV color space; Illumination Compensation;
Conference_Titel :
Intelligent Control and Automation (WCICA), 2011 9th World Congress on
Conference_Location :
Taipei
Print_ISBN :
978-1-61284-698-9
DOI :
10.1109/WCICA.2011.5970553