ImageEn, unit imageenproc |
|
TImageEnProc.HSVvar
Declaration
procedure HSVvar(Hue, Sat, Val: Integer);
Description
Adjust the Hue, Saturation and Value of the selected region.
Parameter | Description |
Hue | Offset to add to the Hue channel, from -180 to +180 |
Sat | Offset to add to the Saturation channel, from -100 to +100 |
Val | Offset to add to the Value channel, from -100 to +100 |
Note:
◼A UI for this is available to your users in the
Image Processing dialog◼If the image
PixelFormat is not ie24RGB or ie32RGB, 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)// Increase luminosity/brightness
ImageEnView1.Proc.HSVvar(0, 0, 30);
// Convert to gray
ImageEnView1.Proc.HSVvar(0, -100, 0);
// Load test image
ImageEnView1.IO.LoadFromFile( 'D:\TestImage.jpg' );
// Change the Hue, Saturation and Value
ImageEnView1.Proc.HSVvar( 30, 10, 10 );