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Fixed random color dots in dark areas using some Canon DCP profiles

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see issue 1406
This commit is contained in:
Oliver Duis
2012-06-10 21:01:17 +02:00
parent 79527e99fb
commit ef21ae5e8d
5 changed files with 8 additions and 79 deletions
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71
rtengine/utils.cc
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@@ -145,77 +145,6 @@ void vflip (unsigned char* img, int w, int h) {
delete [] flipped;
}
void rgb2hsv (int r, int g, int b, float &h, float &s, float &v) {
double var_R = r / 65535.0;
double var_G = g / 65535.0;
double var_B = b / 65535.0;
double var_Min = min(var_R,var_G,var_B);
double var_Max = max(var_R,var_G,var_B);
double del_Max = var_Max - var_Min;
v = var_Max;
if (fabs(del_Max)<0.00001) {
h = 0;
s = 0;
}
else {
s = del_Max/var_Max;
if ( var_R == var_Max ) h = (var_G - var_B)/del_Max;
else if ( var_G == var_Max ) h = 2.0 + (var_B - var_R)/del_Max;
else if ( var_B == var_Max ) h = 4.0 + (var_R - var_G)/del_Max;
h /= 6.0;
if ( h < 0 ) h += 1;
if ( h > 1 ) h -= 1;
}
}
void hsv2rgb (float h, float s, float v, int &r, int &g, int &b) {
float h1 = h*6; // sector 0 to 5
int i = floor( h1 );
float f = h1 - i; // fractional part of h
float p = v * ( 1 - s );
float q = v * ( 1 - s * f );
float t = v * ( 1 - s * ( 1 - f ) );
float r1,g1,b1;
if (i==0) {r1 = v; g1 = t; b1 = p;}
else if (i==1) {r1 = q; g1 = v; b1 = p;}
else if (i==2) {r1 = p; g1 = v; b1 = t;}
else if (i==3) {r1 = p; g1 = q; b1 = v;}
else if (i==4) {r1 = t; g1 = p; b1 = v;}
else if (i==5) {r1 = v; g1 = p; b1 = q;}
r = (int)( r1 * 65535);
g = (int)( g1 * 65535);
b = (int)( b1 * 65535);
}
// The same function but set float values instead if int
// Function copied for speed concerns
void hsv2rgb (float h, float s, float v, float &r, float &g, float &b) {
float h1 = h*6; // sector 0 to 5
int i = floor( h1 );
float f = h1 - i; // fractional part of h
float p = v * ( 1 - s );
float q = v * ( 1 - s * f );
float t = v * ( 1 - s * ( 1 - f ) );
if (i==0) {r = v; g = t; b = p;}
else if (i==1) {r = q; g = v; b = p;}
else if (i==2) {r = p; g = v; b = t;}
else if (i==3) {r = p; g = q; b = v;}
else if (i==4) {r = t; g = p; b = v;}
else if (i==5) {r = v; g = p; b = q;}
}
}