ImageEn Forum - Colorize function in ImageEn

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Colorize function in ImageEn

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AndyColmes

USA
351 Posts

Posted - Aug 27 2016 : 17:34:32

In using some commercial imaging programs, there is a function called Colorize that can make a grayscale image into red. Is there such a function in ImageEn? I would like to automatically turn a grayscale image to color, and if possible different color shades without having to replace the color for each pixel, which could be slow.

Thank you for any help.

Andy

w2m

USA
1990 Posts

Posted - Aug 27 2016 : 19:00:49

TImageEnProc.Colorize

Declaration
procedure Colorize(hue: Integer; saturation: Integer; luminosity: Double);

Description
Set the hue and saturation for all pixels of the image. It also adjusts the luminosity using a multiplier.

Parameter Description
hue A value between 0 and 359 (corresponding to 0 to 359 degrees around hexcone)
saturation A value between 0 (shade of gray) and 99 (pure color).
luminosity This is 1 if you don't touch the original luminosity. Whereas 1.1 would equate to 10% increase in luminosity, for example

Example
// Apply a sepia effect to the image

ImageEnView.Proc.Colorize(40, 50, 1.1);

Bill Miller
Adirondack Software & Graphics
Email: w2m@hughes.net
EBook: http://www.imageen.com/ebook/
Custom Commercial ImageEn Development

w2m

USA
1990 Posts

Posted - Aug 27 2016 : 19:14:43

TImageEnProc.MapGrayToColor

Declaration
procedure MapGrayToColor(map: array of TRGB);

Description
Maps each gray scale level to specified RGB color, using provided map.

var
  map: array [0 .. 255] of TRGB;
  i: Integer;  
for i := 0 to 255 do
begin
  map[i].r := i;
  map[i].g := 0;
  map[i].b := 0;
end;
ImageEnView.Proc.MapGrayToColor(map);
ImageEnView.Update;