ImageEn, unit imageenproc |
|
TImageEnProc.MapGrayToColor
Declaration
procedure MapGrayToColor(map: array of TRGB);
Description
Map each gray scale level to specified RGB color using the provided map.
Parameter | Description |
map | Array of 256 elements of TRGB values |
Note:
◼You can generate 256 color maps using
GenerateDicomColorPalette,
GenerateColorLuminancePalette,
GenerateHuePalette and
GenerateGradientPalette◼To display images with a color map (without modifying the image) use
AssignColorMap◼Color to gray conversion is controlled by:
RedToGrayCoef,
GreenToGrayCoef,
BlueToGrayCoef◼If the image
PixelFormat is not ie24RGB, it will be converted
| Demos\ImageEditing\EveryMethod\EveryMethod.dpr |
Method Testing
ImageEnView1.IO.LoadFromFile( 'D:\TestImage.jpg' );
// Apply a gradient palette to image
colorMap := GenerateGradientPalette( clYellow, clGreen, 256 );
ImageEnView1.Proc.MapGrayToColor(colorMap);
// Apply HotMetalBlue palette to image
colorMap := GenerateDicomColorPalette( iectHotMetalBlue );
ImageEnView1.Proc.MapGrayToColor(colorMap);
var
map: array [0..255] of TRGB;
i: Integer;
begin
for i := 0 to 255 do
begin
map[i].r := i;
map[i].g := 255-i;
map[i].b := i;
end;
ImageEnView1.IO.LoadFromFile('grayimage.jpg');
ImageEnView1.Proc.MapGrayToColor(map);
end;
// Apply Rainbow palette to image
colorMap := GenerateDicomColorPalette( iectRainbow );
ImageEnView1.Proc.MapGrayToColor(colorMap);
// Apply Hot Iron palette to image
colorMap := GenerateDicomColorPalette( iectHotIron );
ImageEnView1.Proc.MapGrayToColor(colorMap);
// Apply PET palette to image
colorMap := GenerateDicomColorPalette( iectPET );
ImageEnView1.Proc.MapGrayToColor(colorMap);
// Apply PET 20 Step palette to image
colorMap := GenerateDicomColorPalette( iectPET20Step );
ImageEnView1.Proc.MapGrayToColor(colorMap);
// Apply Hot Metal Blue palette to image
colorMap := GenerateDicomColorPalette( iectHotMetalBlue );
ImageEnView1.Proc.MapGrayToColor(colorMap);
See Also
◼GenerateDicomColorPalette◼GenerateColorLuminancePalette◼GenerateHuePalette◼GenerateGradientPalette