Legacy ImageMagick Discussions Archive

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// convert input.jpg -function polynomial "10,-5.0" output.jpg
// Remove this next line if you're using Linux
#include <windows.h>
#include <wand/magick_wand.h>

void test_wand(LPTSTR lpCmdLine)
{
	MagickWand *mw = NULL;
	double args[2] = {10,-5.0};

	MagickWandGenesis();
	mw = NewMagickWand();

	MagickReadImage(mw,"input.jpg");
	MagickFunctionImage(mw,PolynomialFunction,2,args);
	MagickWriteImage(mw,"output.jpg");
	
	DestroyMagickWand(mw);
	MagickWandTerminus();
}

Code: Select all

#include <windows.h>
#include <wand/magick_wand.h>

void test_wand(LPTSTR lpCmdLine)
{
	MagickWand *mw = NULL;
	double mean,sd;
	char info[128];

	MagickWandGenesis();
// convert input.jpg -format "%[fx:mean]" info:
	mw = NewMagickWand();

	MagickReadImage(mw,"input.jpg");
	MagickGetImageChannelMean(mw,RedChannel,&mean,&sd);
	// [fx:mean] prints the normalized mean of the Red channel
	// But the MagickWand function returns the unnormalized mean
	// so divide by 65535 to match what the convert command prints
	sprintf(info,"logo: mean = %12g",mean/65535);
	MessageBox(NULL,info,"",MB_OK);
	DestroyMagickWand(mw);

	MagickWandTerminus();
}

Code: Select all

	MagickCompositeImage(mw,mw1,VividLightCompositeOp,0,0);