Example[]
| inImage |  inImage |
|
| test contrast |  low contrast |
 high contrast |
| test brightness |  low brightness |
 high brightness |
Parameters[]
to be certain to have a up to date information you can list all parameters with their description directly with the Filters API (see TutorialC1 in langage C or Tutorial3 in Delphi)
[inImage][]
input image to adjust
type : image
[outImage][]
result image of adjust
type : image
[brightness][]
Brightness definition from Wikipedia
type : integer
[contrast][]
Contrast definition from Wikipedia
type : integer
[autoAdjust][]
automatic bright and contrast
[brightness] and [contrast] parameter are ignored.
type : boolean
Sample code[]
C[]
see test13 in TutorialC1
printf("->test filterAdjust\n\n");
PBitmap32 imageLoaded = helper_loadImage( "lenna_color.bmp" );
if( imageLoaded != NULL ){
__int32 filterAdjust = filters_createFilter( "filterAdjust" );
PBitmap32 imageOut = image_createImageLike( imageLoaded );
filters_setParameterImage( filterAdjust, "inImage", imageLoaded );
filters_setParameterImage( filterAdjust, "outImage", imageOut );
filters_setParameterInteger( filterAdjust, "contrast", 255 ); // 128 = no change
filters_setParameterInteger( filterAdjust, "brightness", 0 ); // 0 = no change
filters_run( filterAdjust );
// save
char strImageToSave[255];
strcpy( strImageToSave, "testFiltersDllC_output_adjust.jpg" );
printf( "save image to [%s]\n", strImageToSave );
helper_saveImage( imageOut, strImageToSave );
// dispose
image_freeImage( imageOut );
filters_deleteFilter( filterAdjust );
image_freeImage( imageLoaded );
}
Delphi[]
imageOut := image.eraseOrCreateImageLike( imageOut, imageIn );
setParameterImage( filterAdjust, 'inImage', imageIn );
setParameterImage( filterAdjust, 'outImage', imageOut );
setParameterInteger( filterAdjust, 'contrast', 255 );
setParameterInteger( filterAdjust, 'brightness', 0 );
run( filterAdjust );