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replaced code to convert from Lab to XYZ by calling Color::Lab2XYZ(..)

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heckflosse
2016-09-21 21:01:51 +02:00
parent ab2be87333
commit 1e268105db
1 changed files with 4 additions and 20 deletions
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24
rtengine/iplab2rgb.cc
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@@ -272,16 +272,8 @@ Image16* ImProcFunctions::lab2rgb16 (LabImage* lab, int cx, int cy, int cw, int
short* za = (short*)image->b(i - cy); short* za = (short*)image->b(i - cy);
for (int j = cx; j < cx + cw; j++) { for (int j = cx; j < cx + cw; j++) {
float x_, y_, z_;
float fy = (0.0086206897f * rL[j]) / 327.68f + 0.1379310345f; // (L+16)/116 Color::Lab2XYZ(rL[j], ra[j], rb[j], x_, y_, z_);
float fx = (0.002f * ra[j]) / 327.68f + fy;
float fz = fy - (0.005f * rb[j]) / 327.68f;
float LL = rL[j] / 327.68f;
float x_ = 65535.0f * (float) Color::f2xyz(fx) * Color::D50x;
//float y_ = 65535.0 * Color::f2xyz(fy);
float z_ = 65535.0f * (float) Color::f2xyz(fz) * Color::D50z;
float y_ = (LL > Color::epskap) ? 65535.0f * fy * fy * fy : 65535.0f * LL / Color::kappa;
xa[j - cx] = float2uint16range(x_); xa[j - cx] = float2uint16range(x_);
ya[j - cx] = float2uint16range(y_); ya[j - cx] = float2uint16range(y_);
@@ -549,16 +541,8 @@ Image16* ImProcFunctions::lab2rgb16b (LabImage* lab, int cx, int cy, int cw, int
short* za = (short*)image->b(i - cy); short* za = (short*)image->b(i - cy);
for (int j = cx; j < cx + cw; j++) { for (int j = cx; j < cx + cw; j++) {
float x_, y_, z_;
float fy = (0.0086206897f * rL[j]) / 327.68f + 0.1379310345f; // (L+16)/116 Color::Lab2XYZ(rL[j], ra[j], rb[j], x_, y_, z_);
float fx = (0.002f * ra[j]) / 327.68f + fy;
float fz = fy - (0.005f * rb[j]) / 327.68f;
float LL = rL[j] / 327.68f;
float x_ = 65535.0f * (float)Color::f2xyz(fx) * Color::D50x;
// float y_ = 65535.0 * Color::f2xyz(fy);
float z_ = 65535.0f * (float)Color::f2xyz(fz) * Color::D50z;
float y_ = (LL > Color::epskap) ? (float) 65535.0 * fy * fy * fy : 65535.0f * LL / Color::kappa;
xa[j - cx] = float2uint16range(x_); xa[j - cx] = float2uint16range(x_);
ya[j - cx] = float2uint16range(y_); ya[j - cx] = float2uint16range(y_);