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Perceptually Weighted Color-to-Grayscale Conversion For Images With Non-Uniform Chromatic Distribution Using Multiple Regression
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Color-to-Gray scale conversion methods try to identify weights for various color channels to obtain a gray-scale image. These weights can be fixed either globally or computed on a localized basis. This paper presents an approach for computing the global weights using localized regions perpetually selected based on human perception. The approach aims to bring forth a color invariant gray scale conversion, such that it tries to maximize the required foreground information. The proposed method was tested on DIBCO-2013 dataset and qualitatively evaluated by looking at the structural similarity with the foreground using SSIM. The experimental results of ours and other color-to-gray scale methods have been tabulated and discussed.
Keywords
Color-to-Grayscale Conversion, Multiple Regression, Least-Square Approach, Color Image, Gray Scale Image.
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