Renamed (and refactored to use Stat::MinMax function) method for ramp-coloring a mesh according to its Quality from UpdateColor::VertexQuality to UpdateColor::VertexQualityRamp.
Added UpdateColor::VertexQualityGray.
This commit is contained in:
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9e214da6ff
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@ -64,8 +64,10 @@ Changed name from plural to singular (normals->normal)
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#define __VCG_TRI_UPDATE_COLOR
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#define __VCG_TRI_UPDATE_COLOR
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#include <limits>
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#include <limits>
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#include <math.h>
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#include <math.h>
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#include <vcg/space/color4.h>
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#include <vcg/space/color4.h>
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#include <vcg/math/histogram.h>
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#include <vcg/math/histogram.h>
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#include <vcg/complex/trimesh/stat.h>
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namespace vcg {
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namespace vcg {
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namespace tri {
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namespace tri {
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@ -291,7 +293,7 @@ static void FaceQuality(UpdateMeshType &m, float minq, float maxq)
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(*fi).C().ColorRamp(minq,maxq,(*fi).Q());
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(*fi).C().ColorRamp(minq,maxq,(*fi).Q());
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}
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}
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static void VertexQuality(UpdateMeshType &m, float minq, float maxq)
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static void VertexQualityRamp(UpdateMeshType &m, float minq, float maxq)
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{
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{
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typename UpdateMeshType::VertexIterator vi;
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typename UpdateMeshType::VertexIterator vi;
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@ -300,19 +302,25 @@ static void VertexQuality(UpdateMeshType &m, float minq, float maxq)
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(*vi).C().ColorRamp(minq,maxq,(*vi).Q());
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(*vi).C().ColorRamp(minq,maxq,(*vi).Q());
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}
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}
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static void VertexQuality(UpdateMeshType &m)
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static void VertexQualityRamp(UpdateMeshType &m)
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{
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std::pair<float,float> minmax = Stat<UpdateMeshType>::ComputePerVertexQualityMinMax( m);
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VertexQualityRamp(m,minmax.first,minmax.second);
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}
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static void VertexQualityGray(UpdateMeshType &m, const float minq, const float maxq)
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{
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{
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// step 1: find the range
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typename UpdateMeshType::VertexIterator vi;
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typename UpdateMeshType::VertexIterator vi;
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float minq=std::numeric_limits<float>::max(),
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maxq=-std::numeric_limits<float>::max();
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for(vi=m.vert.begin();vi!=m.vert.end();++vi)
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for(vi=m.vert.begin();vi!=m.vert.end();++vi)
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if(!(*vi).IsD())
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if(!(*vi).IsD())
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{
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(*vi).C().SetGrayShade( ((*vi).Q()-minq)/(maxq-minq));
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minq=vcg::math::Min<float>(minq,(*vi).Q());
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}
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maxq=vcg::math::Max<float>(maxq,(*vi).Q());
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}
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static void VertexQualityGray(UpdateMeshType &m)
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VertexQuality(m,minq,maxq);
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{
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std::pair<float,float> minmax = Stat<UpdateMeshType>::ComputePerVertexQualityMinMax( m);
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VertexQualityGray(m,minmax.first,minmax.second);
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}
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}
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//Fill the mesh with the selected color.
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//Fill the mesh with the selected color.
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@ -388,7 +396,7 @@ static int Brighting(UpdateMeshType &m, float amount, const bool ProcessSelected
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}
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}
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return counter;
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return counter;
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}
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}
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//Apply Contrast filter to the mesh with the given contrast factor.
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//Apply Contrast filter to the mesh with the given contrast factor.
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static int Contrast(UpdateMeshType &m, float factor, const bool ProcessSelected=false)
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static int Contrast(UpdateMeshType &m, float factor, const bool ProcessSelected=false)
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{
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{
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@ -408,7 +416,7 @@ static int Contrast(UpdateMeshType &m, float factor, const bool ProcessSelected=
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return counter;
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return counter;
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}
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}
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//Performs contrast operations on color, i.e expands or compress the histogram around
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//Performs contrast operations on color, i.e expands or compress the histogram around
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//the midpoint value. NewValue = (OldValue - 128) × factor + 128
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//the midpoint value. NewValue = (OldValue - 128) × factor + 128
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static Color4b ColorMul(Color4b c, float factor)
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static Color4b ColorMul(Color4b c, float factor)
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{
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{
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@ -419,7 +427,7 @@ static int ValueMul(int value, float factor)
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{
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{
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return math::Clamp<int>((int)((value - 128)*factor + 128), 0, 255);
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return math::Clamp<int>((int)((value - 128)*factor + 128), 0, 255);
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}
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}
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//Apply Contrast and Brightness filter to the mesh, with the given contrast factor and brightness amount.
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//Apply Contrast and Brightness filter to the mesh, with the given contrast factor and brightness amount.
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static int ContrastBrightness(UpdateMeshType &m, float factor, float amount, const bool ProcessSelected=false)
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static int ContrastBrightness(UpdateMeshType &m, float factor, float amount, const bool ProcessSelected=false)
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{
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{
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@ -514,55 +522,55 @@ static float ValuePow(float value, float exponent)
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{
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{
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return powf(value, exponent);
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return powf(value, exponent);
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}
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}
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//useful bit masks for RGB channels, used for Levels filter.
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//useful bit masks for RGB channels, used for Levels filter.
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enum rgbChMask {ALL_CHANNELS = 7, RED_CHANNEL = 4, GREEN_CHANNEL = 2, BLUE_CHANNEL = 1, NO_CHANNELS = 0 };
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enum rgbChMask {ALL_CHANNELS = 7, RED_CHANNEL = 4, GREEN_CHANNEL = 2, BLUE_CHANNEL = 1, NO_CHANNELS = 0 };
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//Adjusts color levels of the mesh. Filter can be applied to all RGB channels or to each channel separately.
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//Adjusts color levels of the mesh. Filter can be applied to all RGB channels or to each channel separately.
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//in_min, gamma and in_max are respectively the black point, the gray point and the white point.
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//in_min, gamma and in_max are respectively the black point, the gray point and the white point.
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//out_min and out_max are the output level for black and white respectively.
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//out_min and out_max are the output level for black and white respectively.
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static int Levels(UpdateMeshType &m, float gamma, float in_min, float in_max, float out_min, float out_max, unsigned char rgbMask, const bool ProcessSelected=false)
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static int Levels(UpdateMeshType &m, float gamma, float in_min, float in_max, float out_min, float out_max, unsigned char rgbMask, const bool ProcessSelected=false)
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{
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{
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int counter=0;
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int counter=0;
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VertexIterator vi;
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VertexIterator vi;
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for(vi=m.vert.begin();vi!=m.vert.end();++vi) //scan all the vertex...
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for(vi=m.vert.begin();vi!=m.vert.end();++vi) //scan all the vertex...
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{
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{
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if(!(*vi).IsD()) //if it has not been deleted...
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if(!(*vi).IsD()) //if it has not been deleted...
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{
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{
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if(!ProcessSelected || (*vi).IsS()) //if this vertex has been selected, do transormation
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if(!ProcessSelected || (*vi).IsS()) //if this vertex has been selected, do transormation
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{
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{
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(*vi).C() = ColorLevels((*vi).C(), gamma, in_min, in_max, out_min, out_max, rgbMask);
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(*vi).C() = ColorLevels((*vi).C(), gamma, in_min, in_max, out_min, out_max, rgbMask);
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++counter;
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++counter;
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}
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}
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}
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}
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}
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}
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return counter;
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return counter;
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}
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}
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//Performs levels transformation on each channel set to 1 in the rgbMask.
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//Performs levels transformation on each channel set to 1 in the rgbMask.
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static Color4b ColorLevels(Color4b c, float gamma, float in_min, float in_max, float out_min, float out_max, unsigned char rgbMask)
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static Color4b ColorLevels(Color4b c, float gamma, float in_min, float in_max, float out_min, float out_max, unsigned char rgbMask)
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{
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{
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unsigned char r = c[0], g = c[1], b = c[2];
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unsigned char r = c[0], g = c[1], b = c[2];
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if(rgbMask & RED_CHANNEL) r = ValueLevels(c[0], gamma, in_min, in_max, out_min, out_max);
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if(rgbMask & RED_CHANNEL) r = ValueLevels(c[0], gamma, in_min, in_max, out_min, out_max);
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if(rgbMask & GREEN_CHANNEL) g = ValueLevels(c[1], gamma, in_min, in_max, out_min, out_max);
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if(rgbMask & GREEN_CHANNEL) g = ValueLevels(c[1], gamma, in_min, in_max, out_min, out_max);
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if(rgbMask & BLUE_CHANNEL) b = ValueLevels(c[2], gamma, in_min, in_max, out_min, out_max);
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if(rgbMask & BLUE_CHANNEL) b = ValueLevels(c[2], gamma, in_min, in_max, out_min, out_max);
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return Color4b(r, g, b, 255);
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return Color4b(r, g, b, 255);
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}
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}
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//Transform on levels
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//Transform on levels
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static int ValueLevels(int value, float gamma, float in_min, float in_max, float out_min, float out_max)
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static int ValueLevels(int value, float gamma, float in_min, float in_max, float out_min, float out_max)
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{
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{
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float fvalue = value/255.0f;
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float fvalue = value/255.0f;
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// normalize
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// normalize
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fvalue = math::Clamp<float>(fvalue - in_min, 0.0f, 1.0f) / math::Clamp<float>(in_max - in_min, 1.0f/255.0f, 1.0f);
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fvalue = math::Clamp<float>(fvalue - in_min, 0.0f, 1.0f) / math::Clamp<float>(in_max - in_min, 1.0f/255.0f, 1.0f);
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// transform gamma
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// transform gamma
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fvalue = powf(fvalue,1/gamma);
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fvalue = powf(fvalue,1/gamma);
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// rescale range
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// rescale range
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fvalue = fvalue * (out_max - out_min) + out_min;
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fvalue = fvalue * (out_max - out_min) + out_min;
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//back in interval [0,255] and clamp
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//back in interval [0,255] and clamp
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return math::Clamp<int>((int)(fvalue * 255), 0, 255);
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return math::Clamp<int>((int)(fvalue * 255), 0, 255);
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}
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}
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//Colors the mesh. Color is blended to the mesh with the given intensity.
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//Colors the mesh. Color is blended to the mesh with the given intensity.
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static int Colourisation(UpdateMeshType &m, Color4b c, float intensity, const bool ProcessSelected=false)
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static int Colourisation(UpdateMeshType &m, Color4b c, float intensity, const bool ProcessSelected=false)
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{
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{
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@ -581,7 +589,7 @@ static int Colourisation(UpdateMeshType &m, Color4b c, float intensity, const bo
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}
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}
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return counter;
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return counter;
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}
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}
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//Perform colourisation operation. For each channel C: newC = origC + intensity * (newC - origC)
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//Perform colourisation operation. For each channel C: newC = origC + intensity * (newC - origC)
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static Color4b ColorApplyDiff(Color4b old_color, Color4b new_color, float intensity)
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static Color4b ColorApplyDiff(Color4b old_color, Color4b new_color, float intensity)
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{
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{
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@ -591,191 +599,191 @@ static Color4b ColorApplyDiff(Color4b old_color, Color4b new_color, float intens
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static int ValueApplyDiff(int old_value, int new_value, float intensity)
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static int ValueApplyDiff(int old_value, int new_value, float intensity)
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{
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{
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return math::Clamp<int>((int)(old_value + intensity * (new_value - old_value)), 0, 255);
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return math::Clamp<int>((int)(old_value + intensity * (new_value - old_value)), 0, 255);
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}
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//An useful ENUM to hold all desaturation methods.
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enum DesaturationMethods {M_LIGHTNESS = 0, M_LUMINOSITY = 1, M_AVERAGE = 2};
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//Desaturates the mesh according the selected method. Method belongs to DesaturationMethods's ENUM.
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static int Desaturation(UpdateMeshType &m, int method, const bool ProcessSelected=false)
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{
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int counter=0;
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VertexIterator vi;
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for(vi=m.vert.begin();vi!=m.vert.end();++vi) //scan all the vertex...
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{
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if(!(*vi).IsD()) //if it has not been deleted...
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{
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if(!ProcessSelected || (*vi).IsS()) //if this vertex has been selected, do transormation
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{
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(*vi).C() = ColorDesaturate((*vi).C(), method);
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++counter;
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}
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}
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}
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return counter;
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}
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//Desature the color. Ausiliary functions to calculate lightness/luminosity/average.
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static Color4b ColorDesaturate(Color4b c, int method)
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{
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switch(method){
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case M_LIGHTNESS:{
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int val = (int)ComputeLightness(c);
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return Color4b( val, val, val, 255);
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}
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case M_AVERAGE:{
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int val = (int)ComputeAvgLightness(c);
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return Color4b( val, val, val, 255);
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}
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case M_LUMINOSITY:{
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int val = (int)ComputeLuminosity(c);
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return Color4b( val, val, val, 255);
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}
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default: assert(0);
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}
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}
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//ausiliary function to compute average lightness. value = (R+G+B)/3
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static float ComputeAvgLightness(Color4b c)
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{
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return float(c[0]+c[1]+c[2])/3.0f;
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}
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//ausiliary function to compute luminosity. value = 0.21*R+0.71*G+0.7*B
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static float ComputeLuminosity(Color4b c)
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{
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return float(0.2126f*c[0]+0.7152f*c[1]+0.0722f*c[2]);
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}
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}
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//Equalize the histogram of colors. It can equalize any combination of rgb channels or
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//An useful ENUM to hold all desaturation methods.
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//it can work on lightness.
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enum DesaturationMethods {M_LIGHTNESS = 0, M_LUMINOSITY = 1, M_AVERAGE = 2};
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static int Equalize(UpdateMeshType &m, unsigned int rgbMask, const bool ProcessSelected=false)
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{
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//Desaturates the mesh according the selected method. Method belongs to DesaturationMethods's ENUM.
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//declares , resets and set up 4 histograms, for Red, Green, Blue and Lightness
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static int Desaturation(UpdateMeshType &m, int method, const bool ProcessSelected=false)
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Histogramf Hl, Hr, Hg, Hb;
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{
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Hl.Clear(); Hr.Clear(); Hg.Clear(); Hb.Clear();
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int counter=0;
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Hl.SetRange(0, 255, 255); Hr.SetRange(0, 255, 255); Hg.SetRange(0, 255, 255); Hb.SetRange(0, 255, 255);
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VertexIterator vi;
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for(vi=m.vert.begin();vi!=m.vert.end();++vi) //scan all the vertex...
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int counter=0;
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{
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VertexIterator vi;
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if(!(*vi).IsD()) //if it has not been deleted...
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{
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//Scan the mesh to build the histograms
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if(!ProcessSelected || (*vi).IsS()) //if this vertex has been selected, do transormation
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for(vi=m.vert.begin();vi!=m.vert.end();++vi) //scan all the vertex...
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{
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{
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(*vi).C() = ColorDesaturate((*vi).C(), method);
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if(!(*vi).IsD()) //if it has not been deleted...
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++counter;
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{
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}
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if(!ProcessSelected || (*vi).IsS()) //if this vertex has been selected, put it in the histograms
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}
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{
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}
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int v = (int)(ComputeLightness((*vi).C())+0.5); //compute and round lightness value
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return counter;
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Hl.Add(v); Hr.Add((*vi).C()[0]); Hg.Add((*vi).C()[1]); Hb.Add((*vi).C()[2]);
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}
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}
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}
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//Desature the color. Ausiliary functions to calculate lightness/luminosity/average.
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}
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static Color4b ColorDesaturate(Color4b c, int method)
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{
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//for each histogram, compute the cumulative distribution function, and build a lookup table
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switch(method){
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int cdf_l[256], cdf_r[256], cdf_g[256], cdf_b[256];
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case M_LIGHTNESS:{
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cdf_l[0] = Hl.BinCount(0); cdf_r[0] = Hr.BinCount(0); cdf_g[0] = Hg.BinCount(0); cdf_b[0] = Hb.BinCount(0);
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int val = (int)ComputeLightness(c);
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for(int i=1; i<256; i++){
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return Color4b( val, val, val, 255);
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cdf_l[i] = Hl.BinCount(float(i)) + cdf_l[i-1];
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}
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cdf_r[i] = Hr.BinCount(float(i)) + cdf_r[i-1];
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case M_AVERAGE:{
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cdf_g[i] = Hg.BinCount(float(i)) + cdf_g[i-1];
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int val = (int)ComputeAvgLightness(c);
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cdf_b[i] = Hb.BinCount(float(i)) + cdf_b[i-1];
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return Color4b( val, val, val, 255);
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}
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}
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case M_LUMINOSITY:{
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//this loop aaplies the transformation to colors
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int val = (int)ComputeLuminosity(c);
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for(vi=m.vert.begin();vi!=m.vert.end();++vi) //scan all the vertex...
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return Color4b( val, val, val, 255);
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{
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}
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if(!(*vi).IsD()) //if it has not been deleted...
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default: assert(0);
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{
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}
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if(!ProcessSelected || (*vi).IsS()) //if this vertex has been selected, do transormation
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}
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{
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(*vi).C()=ColorEqualize((*vi).C(), cdf_l, cdf_r, cdf_g, cdf_b, rgbMask);
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//ausiliary function to compute average lightness. value = (R+G+B)/3
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++counter;
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static float ComputeAvgLightness(Color4b c)
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}
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{
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}
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return float(c[0]+c[1]+c[2])/3.0f;
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}
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}
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return counter;
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}
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//ausiliary function to compute luminosity. value = 0.21*R+0.71*G+0.7*B
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static float ComputeLuminosity(Color4b c)
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//Applies equalization to the components of the color according to rgbmask
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{
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static Color4b ColorEqualize(Color4b c, int cdf_l[256], int cdf_r[256], int cdf_g[256], int cdf_b[256], unsigned int rgbMask)
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return float(0.2126f*c[0]+0.7152f*c[1]+0.0722f*c[2]);
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{
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}
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unsigned char r = c[0], g = c[1], b = c[2];
|
|
||||||
if(rgbMask == NO_CHANNELS) //in this case, equalization is done on lightness
|
//Equalize the histogram of colors. It can equalize any combination of rgb channels or
|
||||||
{
|
//it can work on lightness.
|
||||||
int v = ValueEqualize(cdf_l[(int)(ComputeLightness(c)+0.5f)], cdf_l[0], cdf_l[255]);
|
static int Equalize(UpdateMeshType &m, unsigned int rgbMask, const bool ProcessSelected=false)
|
||||||
return Color4b(v, v, v, 255); //return the equalized gray color
|
{
|
||||||
}
|
//declares , resets and set up 4 histograms, for Red, Green, Blue and Lightness
|
||||||
if(rgbMask & RED_CHANNEL) r = ValueEqualize(cdf_r[c[0]], cdf_r[0], cdf_r[255]); //Equalizes red
|
Histogramf Hl, Hr, Hg, Hb;
|
||||||
if(rgbMask & GREEN_CHANNEL) g = ValueEqualize(cdf_g[c[1]], cdf_g[0], cdf_g[255]); //Equalizes green
|
Hl.Clear(); Hr.Clear(); Hg.Clear(); Hb.Clear();
|
||||||
if(rgbMask & BLUE_CHANNEL) b = ValueEqualize(cdf_b[c[2]], cdf_b[0], cdf_b[255]); //Equalizes blue
|
Hl.SetRange(0, 255, 255); Hr.SetRange(0, 255, 255); Hg.SetRange(0, 255, 255); Hb.SetRange(0, 255, 255);
|
||||||
return Color4b(r, g, b, 255); //return the equalized color
|
|
||||||
}
|
int counter=0;
|
||||||
|
VertexIterator vi;
|
||||||
//Compute the equalized value
|
|
||||||
static int ValueEqualize(int cdfValue, int cdfMin, int cdfMax)
|
//Scan the mesh to build the histograms
|
||||||
{
|
for(vi=m.vert.begin();vi!=m.vert.end();++vi) //scan all the vertex...
|
||||||
return int(float((cdfValue - cdfMin)/float(cdfMax - cdfMin)) * 255.0f);
|
{
|
||||||
}
|
if(!(*vi).IsD()) //if it has not been deleted...
|
||||||
|
{
|
||||||
//applies the white balance filter. It may works with an auto regulation of white, or based on a user
|
if(!ProcessSelected || (*vi).IsS()) //if this vertex has been selected, put it in the histograms
|
||||||
//color that is supposed to be white.
|
{
|
||||||
static int WhiteBalance(UpdateMeshType &m, bool automatic, Color4b userColor, const bool ProcessSelected=false)
|
int v = (int)(ComputeLightness((*vi).C())+0.5); //compute and round lightness value
|
||||||
{
|
Hl.Add(v); Hr.Add((*vi).C()[0]); Hg.Add((*vi).C()[1]); Hb.Add((*vi).C()[2]);
|
||||||
Color4b unbalancedWhite;
|
}
|
||||||
float lightness = 0;
|
}
|
||||||
int counter=0;
|
}
|
||||||
VertexIterator vi;
|
|
||||||
|
//for each histogram, compute the cumulative distribution function, and build a lookup table
|
||||||
if(!automatic) unbalancedWhite = userColor; //no auto regolation required, user has provided a color.
|
int cdf_l[256], cdf_r[256], cdf_g[256], cdf_b[256];
|
||||||
else //else, we need to scan the mesh and pick its lighter color...
|
cdf_l[0] = Hl.BinCount(0); cdf_r[0] = Hr.BinCount(0); cdf_g[0] = Hg.BinCount(0); cdf_b[0] = Hb.BinCount(0);
|
||||||
{
|
for(int i=1; i<256; i++){
|
||||||
for(vi=m.vert.begin();vi!=m.vert.end();++vi) //scan all the vertex...
|
cdf_l[i] = Hl.BinCount(float(i)) + cdf_l[i-1];
|
||||||
{
|
cdf_r[i] = Hr.BinCount(float(i)) + cdf_r[i-1];
|
||||||
if(!(*vi).IsD()) //if it has not been deleted...
|
cdf_g[i] = Hg.BinCount(float(i)) + cdf_g[i-1];
|
||||||
{
|
cdf_b[i] = Hb.BinCount(float(i)) + cdf_b[i-1];
|
||||||
if(!ProcessSelected || (*vi).IsS()) //if this vertex has been selected...
|
}
|
||||||
{
|
|
||||||
//the lighter color is selected with an incremental approach...
|
//this loop aaplies the transformation to colors
|
||||||
float v = ComputeLightness((*vi).C());
|
for(vi=m.vert.begin();vi!=m.vert.end();++vi) //scan all the vertex...
|
||||||
if( v > lightness){
|
{
|
||||||
lightness = v; //save lightness
|
if(!(*vi).IsD()) //if it has not been deleted...
|
||||||
unbalancedWhite = (*vi).C(); //save the color
|
{
|
||||||
}
|
if(!ProcessSelected || (*vi).IsS()) //if this vertex has been selected, do transormation
|
||||||
}
|
{
|
||||||
}
|
(*vi).C()=ColorEqualize((*vi).C(), cdf_l, cdf_r, cdf_g, cdf_b, rgbMask);
|
||||||
}
|
++counter;
|
||||||
}
|
}
|
||||||
|
}
|
||||||
//in this loop the transformation is applied to the mesh
|
}
|
||||||
for(vi=m.vert.begin();vi!=m.vert.end();++vi) //scan all the vertex...
|
return counter;
|
||||||
{
|
}
|
||||||
if(!(*vi).IsD()) //if it has not been deleted...
|
|
||||||
{
|
//Applies equalization to the components of the color according to rgbmask
|
||||||
if(!ProcessSelected || (*vi).IsS()) //if this vertex has been selected, do transormation
|
static Color4b ColorEqualize(Color4b c, int cdf_l[256], int cdf_r[256], int cdf_g[256], int cdf_b[256], unsigned int rgbMask)
|
||||||
{
|
{
|
||||||
(*vi).C()=ColorWhiteBalance((*vi).C(),unbalancedWhite);
|
unsigned char r = c[0], g = c[1], b = c[2];
|
||||||
++counter;
|
if(rgbMask == NO_CHANNELS) //in this case, equalization is done on lightness
|
||||||
}
|
{
|
||||||
}
|
int v = ValueEqualize(cdf_l[(int)(ComputeLightness(c)+0.5f)], cdf_l[0], cdf_l[255]);
|
||||||
}
|
return Color4b(v, v, v, 255); //return the equalized gray color
|
||||||
return counter;
|
}
|
||||||
}
|
if(rgbMask & RED_CHANNEL) r = ValueEqualize(cdf_r[c[0]], cdf_r[0], cdf_r[255]); //Equalizes red
|
||||||
|
if(rgbMask & GREEN_CHANNEL) g = ValueEqualize(cdf_g[c[1]], cdf_g[0], cdf_g[255]); //Equalizes green
|
||||||
//Balnce the white of the color, applying a correction factor based on the unbalancedWhite color.
|
if(rgbMask & BLUE_CHANNEL) b = ValueEqualize(cdf_b[c[2]], cdf_b[0], cdf_b[255]); //Equalizes blue
|
||||||
static Color4b ColorWhiteBalance(Color4b c, Color4b unbalancedWhite)
|
return Color4b(r, g, b, 255); //return the equalized color
|
||||||
{
|
}
|
||||||
//sanity check to avoid division by zero...
|
|
||||||
if(unbalancedWhite[0]==0) unbalancedWhite[0]=1;
|
//Compute the equalized value
|
||||||
if(unbalancedWhite[1]==0) unbalancedWhite[1]=1;
|
static int ValueEqualize(int cdfValue, int cdfMin, int cdfMax)
|
||||||
if(unbalancedWhite[2]==0) unbalancedWhite[2]=1;
|
{
|
||||||
|
return int(float((cdfValue - cdfMin)/float(cdfMax - cdfMin)) * 255.0f);
|
||||||
return Color4b(
|
}
|
||||||
math::Clamp<int>((int)(c[0]*(255.0f/unbalancedWhite[0])), 0, 255),
|
|
||||||
math::Clamp<int>((int)(c[1]*(255.0f/unbalancedWhite[1])), 0, 255),
|
//applies the white balance filter. It may works with an auto regulation of white, or based on a user
|
||||||
math::Clamp<int>((int)(c[2]*(255.0f/unbalancedWhite[2])), 0, 255),
|
//color that is supposed to be white.
|
||||||
255);
|
static int WhiteBalance(UpdateMeshType &m, bool automatic, Color4b userColor, const bool ProcessSelected=false)
|
||||||
}
|
{
|
||||||
|
Color4b unbalancedWhite;
|
||||||
|
float lightness = 0;
|
||||||
|
int counter=0;
|
||||||
|
VertexIterator vi;
|
||||||
|
|
||||||
|
if(!automatic) unbalancedWhite = userColor; //no auto regolation required, user has provided a color.
|
||||||
|
else //else, we need to scan the mesh and pick its lighter color...
|
||||||
|
{
|
||||||
|
for(vi=m.vert.begin();vi!=m.vert.end();++vi) //scan all the vertex...
|
||||||
|
{
|
||||||
|
if(!(*vi).IsD()) //if it has not been deleted...
|
||||||
|
{
|
||||||
|
if(!ProcessSelected || (*vi).IsS()) //if this vertex has been selected...
|
||||||
|
{
|
||||||
|
//the lighter color is selected with an incremental approach...
|
||||||
|
float v = ComputeLightness((*vi).C());
|
||||||
|
if( v > lightness){
|
||||||
|
lightness = v; //save lightness
|
||||||
|
unbalancedWhite = (*vi).C(); //save the color
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
//in this loop the transformation is applied to the mesh
|
||||||
|
for(vi=m.vert.begin();vi!=m.vert.end();++vi) //scan all the vertex...
|
||||||
|
{
|
||||||
|
if(!(*vi).IsD()) //if it has not been deleted...
|
||||||
|
{
|
||||||
|
if(!ProcessSelected || (*vi).IsS()) //if this vertex has been selected, do transormation
|
||||||
|
{
|
||||||
|
(*vi).C()=ColorWhiteBalance((*vi).C(),unbalancedWhite);
|
||||||
|
++counter;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
return counter;
|
||||||
|
}
|
||||||
|
|
||||||
|
//Balnce the white of the color, applying a correction factor based on the unbalancedWhite color.
|
||||||
|
static Color4b ColorWhiteBalance(Color4b c, Color4b unbalancedWhite)
|
||||||
|
{
|
||||||
|
//sanity check to avoid division by zero...
|
||||||
|
if(unbalancedWhite[0]==0) unbalancedWhite[0]=1;
|
||||||
|
if(unbalancedWhite[1]==0) unbalancedWhite[1]=1;
|
||||||
|
if(unbalancedWhite[2]==0) unbalancedWhite[2]=1;
|
||||||
|
|
||||||
|
return Color4b(
|
||||||
|
math::Clamp<int>((int)(c[0]*(255.0f/unbalancedWhite[0])), 0, 255),
|
||||||
|
math::Clamp<int>((int)(c[1]*(255.0f/unbalancedWhite[1])), 0, 255),
|
||||||
|
math::Clamp<int>((int)(c[2]*(255.0f/unbalancedWhite[2])), 0, 255),
|
||||||
|
255);
|
||||||
|
}
|
||||||
|
|
||||||
};
|
};
|
||||||
|
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue