期刊名称：International Journal of Electronics Communication and Computer Engineering
印刷版ISSN：2249-071X
电子版ISSN：2278-4209
出版年度：2015
卷号：6
期号：3
页码：431-434
出版社：IJECCE
摘要：Real time image quality is of prime importance as low quality images bring in extreme errors through outside processing and external environmental factors. The reported work provides discussions on various aspects of Charged Coupled Device (CCD) cameras including various factors contributing in image output quality. This study also compares results of different approaches used for image capture by CCD camera under varying lighting conditions. The digital camera response can be modeled as a function of its parameters viz. amplification gain and the exposure time. The relevant discussion on multi-layer surface albedo mode has also been made, which resulted in improvements in face recognition even under poor lighting conditions as albedo possesses some sharp detrimental features. MLSA diversifies the features as a linear sum of many detailed layers to distinguish features of various layers more accurately with layers being adjusted through various individual weights. On similar line, surface roughness measurements were carried out by machine vision technique to further analyze the effect of lighting conditions on CCD camera output quality. The image quality captured through CCD camera was affected mainly by angle of the light source, which essentially caused change in the surface illumination level.
