Legacy ImageMagick Discussions Archive

I'd like to add some quick, reliable color/contrast/brightness correction to a process that runs through many images for web use, without requiring input from me.

I have a batch file that runs IM to convert large numbers of files for a web site. I can do just about anything successfully that can be ...

SET /A WW2=WW*2
IF !HH! LEQ !WW! SET /A LS=WW
IF !HH! GTR !WW! SET /A LS=HH
SET /A BW=LS/400, FW=LS/33

should be

SET /A WW2=!WW!*2
IF !HH! LEQ !WW! SET /A LS=!WW!
IF !HH! GTR !WW! SET /A LS=!HH!
SET /A BW=!LS!/400, FW=!LS!/33


Done! I'd understood that in SET /A one was not required to use the ...

Your for-loop has parenthesis, and so does the IM convert, within the for parenthesis, so you need to escape it. Change a line to:
-background black ^( +clone -shadow 60x10+10+10 -rotate 180 ^)

Much thanks! That worked great. I was on the wrong track completely.

Just as a side note and for ...

To get the width and height, I generally use something like this:
FOR /F "usebackq" %%L IN (`%IM%identify -format "WW=%%w\nHH=%%h" x.jpg`) DO set %%L
If you need double the width, either use "set /A WW2=%WW%*2" or:
FOR /F "usebackq" %%L IN (`%IM%identify -format "WW=%%w\nHH=%%h\nWW2=%%[fx:w*2 ...

You are looping through all the jpegs, %%A. For every one you find, you try to loop through them all again. I don't see why, especially as you never use %%A.

Then you have a bug, writing "FOR %a" instead of "FOR %%a".


Ah, hell. That's a typo- more accurately a copy/paste error. You are quite ...

I'm having trouble getting a convert command line to work in a windows .cmd file. The command line (sort of like -polaroid) works fine:

FOR %a in (*.jpg) DO convert %%a[800x] -set filename:fname %t -auto-orient -bordercolor grey60 -border 2 -bordercolor white -border 24 -bordercolor grey60 -border ...

I'd like to improve my handling of a series of images of varied portrait/landscape orientation as well as varied aspect ratio.

I'm currently handling this by resizing everything to an arbitrary width of 800px, using the -wave operator, and the resizing again down to thumbnail size, as follows ...