Legacy ImageMagick Discussions Archive

wait, it did work. I ran an old script on accident.
Dang, Fred gets it in one! very nice.

sorry, on windows 10, IM version 7.0.5-Q8
I tried the code above, and it does replace the color with trans, but the final png is Indexed Color.

I have a bunch of 16x16 pixel button images, whose "background" color was 192,192,192.
I need to replace that with transparency, and save as RGB png.
The replace is easy using:
(step1)
magick mogrify -fuzz 0%% -transparent "rgb(192,192,192)" "C:\CAD_Support\Menu Images\*.png"
But then many images ...

BIIIINGOOOOOO!
Dang, guess we know why the word "magick" in the name, you pulled that out of a hat like a pro.
Unbelievable, good catch.
You have a paypal name? or email me at jmaeding **at** hunsaker **dot** com with location to send check if you prefer.
Or amazon gift card, you name it.
Well ...

Its from the install folder of IM.
You can grab a copy I posted here:
https://dn.hunsaker.com/?linkid=KZi4zr6 ... VD1e2/2KDA

BTW Fred, we get this working and I will paypal you $100. You have already gone way above the calling!

I actually do have all the coordinates, I just meant I want to use the original image corners for the distort.
I am actually doing what your approach says, something is going wrong if more than two images are merged though.
Look at this, I merge 2 with this code:
"magick.exe" ^
( "logo.jpg" ( -size ...

well, the problem with that is I know where the images get placed based on corners of the untrimmed image.
That is why I don't want to modify the size of the originals, just mask out pixels outside my polygons.
I reread what the meaning of "+distort tries to fit..." meant, and think it does what I ...

Here is a real situation with several maps I want to stitch. I am zoomed out a bit but these are not square to eachother, and the clips are not simple rectangles but may have 6 or more points involved.
https://s13.postimg.org/41o8oc7s7/ex2.jpg

I'd think if I can figure out how to add images to ...

Lets try this.


On the lower image with all rotated stuff, the final image would be a rectangle of course. Any extra area added would be white.
Does that help a bit?
thx

will do. I agree this is nuts without pics.

I would love to post pics, but have to relearn how to add them to this forum.
I think the simplest way to explain what I want is I have 4 images that I know their unclipped locations, as well as the clipping polygon coords.
I want to clip them and then composite to one image.
They must end up ...

The more I study and test, the more I think I am doing it correct.
I did a test to just tile unclipped images, worked perfect:
"magick.exe" ^
"logo.jpg" ^
( "logo.jpg" -alpha set -virtual-pixel transparent +distort affine "0,0 -123,0 0,118 -123,118" ) ^
( "logo.jpg" -alpha set -virtual-pixel ...

oh, I see the problem. I thought +distort meant "expand virtual canvas as needed", but that is incorrect.
Instead +distort tries to fit things somehow. From the IM web page:

"The other form of the operator, "+distort" (Added to IM v6.3.5-7), will attempt resize the distorted image so it will ...

I see what you are doing with the mpr:, but not +25+25. Why would you do that in this situation?
I would think you might only reset the 0,0 of canvas if expanding it in negative directions, but you did positive.

I made some progress on my previous tests. I realized my trim coords were off, so fixed ...