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comparison Core/Images/ImageProcessing.cpp @ 2491:a9459c7d4bc2

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fix color-to-grayscale conversion
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 14 Mar 2018 16:50:31 +0100
parents 0cacb38297a9
children cd7b854dbc05
comparison
equal deleted inserted replaced
2490:0cacb38297a9 2491:a9459c7d4bc2
112 for (unsigned int x = 0; x < source.GetWidth(); x++, t++, s += 3) 112 for (unsigned int x = 0; x < source.GetWidth(); x++, t++, s += 3)
113 { 113 {
114 // Y = 0.2126 R + 0.7152 G + 0.0722 B 114 // Y = 0.2126 R + 0.7152 G + 0.0722 B
115 int32_t v = (2126 * static_cast<int32_t>(s[0]) + 115 int32_t v = (2126 * static_cast<int32_t>(s[0]) +
116 7152 * static_cast<int32_t>(s[1]) + 116 7152 * static_cast<int32_t>(s[1]) +
117 0722 * static_cast<int32_t>(s[2])) / 1000; 117 0722 * static_cast<int32_t>(s[2])) / 10000;
118 118
119 if (static_cast<int32_t>(v) < static_cast<int32_t>(minValue)) 119 if (static_cast<int32_t>(v) < static_cast<int32_t>(minValue))
120 { 120 {
121 *t = minValue; 121 *t = minValue;
122 } 122 }