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MagickWand C API equivalent to below command.

Posted: 2017-04-24T06:48:22-07:00
by rpatelob

Code: Select all

convert cnbc_r.jpg \
	 '(' cnbc_i.jpg +transparent '#0A0B0D' -alpha extract ')'\
	 '(' cnbc_p.jpg -rotate -33.75 +repage -gravity center -crop 600x437+0+0 +repage ')'\
	 '(' -clone 0 -clone 2 -compose softlight -composite ')'\
	 -delete 0,2 +swap -compose over -alpha off -compose copy_opacity -composite\
	 '(' +clone -alpha extract -write mpr:alpha -blur 0x4 -shade 130x30 mpr:alpha -alpha off\
	 -compose copy_opacity -composite -alpha on -alpha background -alpha deactivate\
	 -auto-level -function polynomial 3.5,-5.05,2.05,0.25 -sigmoidal-contrast 0x50% -alpha on ')'\
	 -compose over -compose Hardlight -composite\
	 '(' -clone 0 -background black -shadow 25x2+0+0 -channel A -level 0,50% +channel ')'\
	  +swap +repage -gravity center -compose over -composite cnbc_1.jpg
I'm trying to convert above command into C API. Below is the C code for that. As some of the parts I haven't got it, the code has not completed yet. Mostly I have got a confusion when I need to merge image using -composite also not understood copy_opacity part. Also I attched the images below.

cnbc_i.jpg
https://drive.google.com/file/d/0B-HZjm ... sp=sharing
cnbc_p.jpg
https://drive.google.com/file/d/0B-HZjm ... sp=sharing
cnbc_r.jpg
https://drive.google.com/file/d/0B-HZjm ... sp=sharing
cnbc_1.jpg
https://drive.google.com/file/d/0B-HZjm ... sp=sharing

Code: Select all

#include "MagickWand/studio.h"
#include "MagickWand/MagickWand.h"
void test() {
	/* convert cnbc_r.jpg \
	 '(' cnbc_i.jpg +transparent '#0A0B0D' -alpha extract ')'\
	 '(' cnbc_p.jpg -rotate -33.75 +repage -gravity center -crop 600x437+0+0 +repage ')'\
	 '(' -clone 0 -clone 2 -compose softlight -composite ')'\
	 -delete 0,2 +swap -compose over -alpha off -compose copy_opacity -composite\
	 '(' +clone -alpha extract -write mpr:alpha -blur 0x4 -shade 130x30 mpr:alpha -alpha off\
	 -compose copy_opacity -composite -alpha on -alpha background -alpha deactivate\
	 -auto-level -function polynomial 3.5,-5.05,2.05,0.25 -sigmoidal-contrast 0x50% -alpha on ')'\
	 -compose over -compose Hardlight -composite\
	 '(' -clone 0 -background black -shadow 25x2+0+0 -channel A -level 0,50% +channel ')'\
	  +swap +repage -gravity center -compose over -composite cnbc_1.jpg */


		MagickWand * wand1, * wand2, * wand3, * wand4, * wandc0, * wandc1, * wandc2, * wandc3, * wandc4, * wandc5;
		PixelWand *PW1, * PW2, * pwand;

		PW1 = NewPixelWand();
		PW2 = NewPixelWand();
		pwand = NewPixelWand();

		wand1 = NewMagickWand();
		wand2 = NewMagickWand();
		wand3 = NewMagickWand();

		MagickReadImage(wand1, "cnbc_r.jpg");
		MagickReadImage(wand2, "cnbc_i.jpg");
		MagickReadImage(wand3, "cnbc_p.jpg");


		// (' cnbc_i.jpg +transparent '#0A0B0D' -alpha extract ')'
		PixelSetColor(PW1,"#0A0B0D");
		MagickTransparentPaintImage(wand2, PW1, 1.0, 0, MagickFalse);
		MagickSetImageAlphaChannel(wand2, ExtractAlphaChannel);


		// '(' cnbc_p.jpg -rotate -33.75 +repage -gravity center -crop 600x437+0+0 +repage ')'
		MagickRotateImage(wand3,pwand,-33.75);
		MagickSetImageGravity(wand3, CenterGravity);
		MagickCropImage(wand3, 600, 437, 0, 0);
		MagickResetImagePage(wand3,"600x437+0+0");

		// '(' -clone 0 -clone 2 -compose softlight -composite ')'
		wandc0 = CloneMagickWand(wand1);
		wandc1 = CloneMagickWand(wand3);
		wandc2 = CloneMagickWand(wand1);
		wandc5 = CloneMagickWand(wand1);
		MagickCompositeImage(wandc0, wandc1, SoftLightCompositeOp,MagickFalse, 0, 0);

		// 	 -delete 0,2 +swap -compose over -alpha off -compose copy_opacity -composite
		MagickCompositeImage(wand1, wand2, OverCompositeOp,MagickFalse, 0, 0);
		MagickCompositeImage(wand1, wand3, OverCompositeOp,MagickFalse, 0, 0);
		MagickCompositeImage(wand1, wandc0, OverCompositeOp,MagickFalse, 0, 0);
		MagickSetImageAlphaChannel(wand1, OffAlphaChannel);

		// '(' +clone -alpha extract -write mpr:alpha -blur 0x4 -shade 130x30 mpr:alpha -alpha off
		// -compose copy_opacity -composite -alpha on -alpha background -alpha deactivate
		// -auto-level -function polynomial 3.5,-5.05,2.05,0.25 -sigmoidal-contrast 0x50% -alpha on ')'
		wandc3 = CloneMagickWand(wand1);
		MagickSetImageAlphaChannel(wandc3, ExtractAlphaChannel);
		wandc4 = CloneMagickWand(wandc3);
		MagickBlurImage(wandc4, 4, 0);
		MagickShadeImage(wandc4, MagickTrue, 130, 130);
		MagickSetImageAlphaChannel(wandc3, OffAlphaChannel);
		MagickCompositeImage(wandc3, wandc4, 0,MagickFalse, 0, 0);
		MagickSetImageAlphaChannel(wandc3, OnAlphaChannel);
		MagickSetImageAlphaChannel(wandc3, BackgroundAlphaChannel);
		MagickSetImageAlphaChannel(wandc3, DeactivateAlphaChannel);
		MagickAutoLevelImage(wandc3);
		const double arguments[4] = {3.5,-5.05,2.05,0.25};
		MagickFunctionImage(wandc3, PolynomialFunction, 4, arguments);
		MagickSigmoidalContrastImage(wandc3, MagickTrue, 50.0, 0.0);
		MagickSetImageAlphaChannel(wandc3, OnAlphaChannel);

		// -compose over -compose Hardlight -composite
		MagickCompositeImage(wand1, wand2, OverCompositeOp,MagickFalse, 0, 0);
		MagickCompositeImage(wand1, wand3, OverCompositeOp,MagickFalse, 0, 0);
		MagickCompositeImage(wand1, wandc0, OverCompositeOp,MagickFalse, 0, 0);
		MagickCompositeImage(wand1, wandc3, OverCompositeOp,MagickFalse, 0, 0);

		//'(' -clone 0 -background black -shadow 25x2+0+0 -channel A -level 0,50% +channel ')'
		PixelSetColor(PW2,"#000000");
		MagickSetImageBackgroundColor(wandc5, PW2);
		MagickShadowImage(wandc5, 0, 0, 25, 25);
		MagickSetImageChannelMask(wandc5, AlphaChannel);
		MagickLevelImage(wandc5, QuantumRange/2, 1.0, 0);

		// +swap +repage -gravity center -compose over -composite ./cnbc__1.jpg
		MagickResetImagePage(wand1,"600x437+0+0");
		MagickSetImageGravity(wand1, CenterGravity);
		MagickCompositeImage(wand1, wandc5, OverCompositeOp,MagickTrue, 0, 0);
		MagickWriteImage(wand1,"finalCnbc.jpg");

		DestroyMagickWand(wand1);
		DestroyMagickWand(wand2);
		DestroyMagickWand(wand3);
		DestroyMagickWand(wandc0);
		DestroyMagickWand(wandc1);
		DestroyMagickWand(wandc2);
		DestroyMagickWand(wandc3);
		DestroyMagickWand(wandc4);
		DestroyMagickWand(wandc5);

		DestroyPixelWand(PW1);
		DestroyPixelWand(PW2);
		DestroyPixelWand(pwand);

		MagickWandTerminus();
}

Re: MagickWand C API equivalent to below command.

Posted: 2017-04-24T07:26:47-07:00
by snibgo
As this question is about MagickWand, I'm moving it to that forum.

You should ALWAYS state what version of IM you are using.

Re: MagickWand C API equivalent to below command.

Posted: 2017-04-24T16:40:14-07:00
by el_supremo
If you output the command line result to a PNG, it has a transparent background. Even so, it seems to be a very complicated command which seems to just invert the black and white in cnbc_i.jpg, make the black transparent and replace the white area with the pattern in cnbc_p.jpg. Is it supposed to do more than that?

Pete

Re: MagickWand C API equivalent to below command.

Posted: 2017-04-24T23:28:00-07:00
by rpatelob
el_supremo wrote:
2017-04-24T16:40:14-07:00
If you output the command line result to a PNG, it has a transparent background. Even so, it seems to be a very complicated command which seems to just invert the black and white in cnbc_i.jpg, make the black transparent and replace the white area with the pattern in cnbc_p.jpg. Is it supposed to do more than that?

Pete
cnbc_i.jpg is just in a black and white but if the image has multiple colors, I'll find top most colors. let's say there is a image of 8 top most colors. I run that command that I have provided 8 times with different colors and finally flatten all images together and make one single image. Check below image.
https://drive.google.com/file/d/0B-HZjm ... sp=sharing

Re: MagickWand C API equivalent to below command.

Posted: 2017-04-24T23:54:00-07:00
by rpatelob
rpatelob wrote:
2017-04-24T23:28:00-07:00
el_supremo wrote:
2017-04-24T16:40:14-07:00
If you output the command line result to a PNG, it has a transparent background. Even so, it seems to be a very complicated command which seems to just invert the black and white in cnbc_i.jpg, make the black transparent and replace the white area with the pattern in cnbc_p.jpg. Is it supposed to do more than that?

Pete
cnbc_i.jpg is just in a black and white but if the image has multiple colors, I'll find top most colors. let's say there is a image of 8 top most colors. I run that command that I have provided 8 times with different colors and finally flatten all images together and make one single image. Check below image.
https://drive.google.com/file/d/0B-HZjm ... sp=sharing
Let's pic the green color, Next I need to generate the image like below using convert cnbc.jpg +transparent '#00A13A' -alpha extract test1.jpg command.
https://drive.google.com/file/d/0B-HZjm ... sp=sharing.

And after that I need to execute complex command I have provided in description of my question I will get the image like below.
https://drive.google.com/file/d/0B-HZjm ... sp=sharing

So I will generate 8 different images using the same procedure and flatten them into one image.

Re: MagickWand C API equivalent to below command.

Posted: 2017-04-25T02:42:16-07:00
by rpatelob
rpatelob wrote:
2017-04-24T06:48:22-07:00

Code: Select all

convert cnbc_r.jpg \
	 '(' cnbc_i.jpg +transparent '#0A0B0D' -alpha extract ')'\
	 '(' cnbc_p.jpg -rotate -33.75 +repage -gravity center -crop 600x437+0+0 +repage ')'\
	 '(' -clone 0 -clone 2 -compose softlight -composite ')'\
	 -delete 0,2 +swap -compose over -alpha off -compose copy_opacity -composite\
	 '(' +clone -alpha extract -write mpr:alpha -blur 0x4 -shade 130x30 mpr:alpha -alpha off\
	 -compose copy_opacity -composite -alpha on -alpha background -alpha deactivate\
	 -auto-level -function polynomial 3.5,-5.05,2.05,0.25 -sigmoidal-contrast 0x50% -alpha on ')'\
	 -compose over -compose Hardlight -composite\
	 '(' -clone 0 -background black -shadow 25x2+0+0 -channel A -level 0,50% +channel ')'\
	  +swap +repage -gravity center -compose over -composite cnbc_1.jpg

From above command I haven't understood -delete 0,2 +swap -compose over -alpha off -compose copy_opacity -composite part. what is copy_opacity and composite on how my images?

Re: MagickWand C API equivalent to below command.

Posted: 2017-04-25T11:16:48-07:00
by fmw42
-delete 0,2 removes two temporary created images when they are no longer needed.

+swap swaps the order of the last two images in the sequence

-compose over -alpha off -compose copy_opacity puts the last image into the alpha channel of the previous image

I would suggest that you put +write tmpX.png at various places in the command line to see what it is generating. That often helps understand the processing. X=0,1,2....