Created
March 1, 2016 08:36
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#ガンマ補正 | |
def self.lut(i, gamma) | |
(i.to_f/255.0) ** (1.0/gamma) * 255.0 | |
end | |
#ガンマ補正された画像を生成 | |
def self.gamma_correction_img(img, gamma = GAMMA_DEFAULT) | |
gamma_correction_img = CvMat.new(img.rows, img.cols, CV_8U, 1) | |
(0...img.rows).each do |y| | |
(0...img.cols).each do |x| | |
gamma_correction_img[y, x] = CvScalar.new(lut(img[y, x][0].to_f, gamma), lut(img[y, x][1].to_f, gamma), lut(img[y, x][2].to_f, gamma)) | |
end | |
end | |
gamma_correction_img | |
end |
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