resize with @ option, but skip small images

[sergeymk]

Hi!

ImageMagick is so perfect in every way, except when (batch) resizing images to a given pixel area (with "@" option), it is impossible to skip images that are smaller than the given area.

I use this to downsize photos, but I don't want to enlarge photos that are already small:

Code: Select all

mogrify -resize 1333000@ -unsharp 0x0.5 -quality 95% *.jpg

[anthony]

Have you tried adding a '>' (resize larger images only) with the '@'?

[sergeymk]

yes I tried, but it does not work.

it gives different errors depending on whether I escape it or not.

[anthony]

Well it has to be escaped or it will be treated as a shell meta-character. What is the other error?

[sergeymk]

I got it!

Code: Select all

mogrify -resize 1333000@^> -unsharp 0x0.5 -quality 95% *.jpg

I was escaping with backslash ( \ ), per examples in manual pages. But in Windows one must escape with ^.

Output is resized only when source image is larger than given area!

Thanks a lot for your time!

[anthony]

I'll make a not of that windows this in the IM Examples API's and scripting section.