Legacy ImageMagick Discussions Archive

refer to this post: http://www.imagemagick.org/discourse-server/viewtopic.php?f=1&t=17503&p=65756&hilit=opacity#p65756 source psd file description: http://i532.photobucket.com/albums/ee323/linjuming/questions/opacity_2.png source png files: http://i532.photobucket.com/albums/ee323/linjum...

the command line below can set the opacity for top png when "-compose dissolve " : convert 1.png 2.png -alpha on -compose dissolve -define compose:args=50 -composite hello.png but there is no use when "-compose overlay " : convert 1.png 2.png -alpha on -compose overlay -define co...

how to set the top png file's opacity when it is composed on top to the background png file? like the same work in PS.

your reply is what I need ,this method is more convenient and faster than composing two png files. Thank you very much!

In Ps, I want to design a gradient with two color which they are only different with brightness,pls see below: http://i532.photobucket.com/albums/ee323/linjuming/questions/brightness.png This type of gradient can be made by separating two layers which the top layer is blended with Luminosity. I am t...

convert test.psd[1] test.psd[2] -compose {what} -composite test.png

I find no "Luminosity" in the toturial:
http://www.imagemagick.org/Usage/compose/

can IM do it?

Thank you very much,I am using the latest version of IM in XP window system,I just want to try to generate css background images using ajax,for photoshop is not very handy when coding a html page then preview in browser. So if the IM can not do that effect,I will give up the thought and go back to PS.

IM converts PS background transparency into alpha transparency. Thus what you see in PS is not the same as what most other tools such as IM convert it into. Most other tools will convert PS background transparency into alpha transparency. So your PS channels will not be the same in IM. is there any...

see another color background compare:

I want to generate a png file from the test.psd using IM. test.psd file: http://linjuming.zy1668.com/my_question/imagemagick/test.zip code: convert test.psd[1] test.psd[2] -alpha on -compose dissolve -define compose:args=50 -composite hello.png result png file: http://i532.photobucket.com/albums/ee3...

how to merge 2 layers using softlight or overlay in IM? I study the compose method of imagemagic : http://www.imagemagick.org/Usage/compose/ , but I can not find the method to output a png that the top layer with softlight or overlay. the effect should be bellow: http://i532.photobucket.com/albums/e...

Yes , it works in command line. Thank you very much. but i doubt whether it can use in ajax if I use command line. <?php $width="300"; exec("convert -size {$width}x100 gradient:red-transparent gradient.png"); if(file_exists("gradient.png")){ echo "yes"; } ?> t...

black as the same result.

how ? can you write down the code? how to output a png32?

Please have a look at this example:
http://www.eclecticdjs.com/mike/tutoria ... /index.php
test in my computer :
the background should be transparent which is black ,why?