ImageEn, unit imageenproc |
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TImageEnProc.AdjustBrightnessContrastSaturation
TImageEnProc.AdjustBrightnessContrastSaturation
Declaration
procedure AdjustBrightnessContrastSaturation(Brightness, Contrast, Saturation: Integer);
Description
Adjust brightness, contrast and color saturation in a single step.
Parameter | Description |
Brightness | A value between -100 and 100 |
Contrast | A value between -100 and 100 |
Saturation | A value between 0 and 512 |
Note:
◼Set a parameter to zero, to avoid changing that value.
◼If the image
PixelFormat is not ie24RGB, it will be converted
| Demos\ImageEditing\EveryMethod\EveryMethod.dpr |
Alternative Methods
There are multiple methods that will be adjust the brightness (luminosity) of an image:
◼IntensityRGBAll:
ImageEnView1.Proc.IntensityRGBall(20, 20, 20); // Increase luminosity by 20 (the fastest)◼AdjustBrightnessContrastSaturation:
ImageEnView1.Proc.AdjustBrightnessContrastSaturation(20, 0, 0); // Increase luminosity by 20◼HSLvar:
ImageEnView1.Proc.HSLvar(0, 0, 20); // Increase luminosity of by (slow but more accurate)◼HSVvar:
ImageEnView1.Proc.HSVvar(0, 0, 20); // Increase luminosity of by (slow but more accurate)// Load test image
ImageEnView1.IO.LoadFromFile( 'D:\TestImage.jpg' );
// Enhance brightness, contrast and color saturation
ImageEnView1.Proc.AdjustBrightnessContrastSaturation( 50, 10, 10 );
// Enhance only brightness and contrast, maintain existing color saturation
ImageEnView1.Proc.AdjustBrightnessContrastSaturation( 50, 10, 0 );