Eecient Luminance and Saturation Processing Techniques for Bypassing Color Coordinate Transformations
نویسنده
چکیده
|In many applications of color image processing, only modiication of the luminance component is desired. However, the commonly used coordinate systems, such as HSI, LHS, and YIQ, are not perceptually orthogonal; that is, luminance modiication can cause perceptual shifts in the hue and saturation. In this paper, we present a theoretical analysis of this phenomenon. EEcient techniques are developed for bypassing the costly coordinate transformations when only the luminance or only the saturation is to be modiied. Experimental results using histogram equalization support the theoretical analysis.
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تاریخ انتشار 1995