Legacy ImageMagick Discussions Archive

I'm running my batch on a larger set of images this morning and have at least one other image that causes this error. I will put all that I find in this shared folder one ondrive https://1drv.ms/f/s!As3ZytCDCPbLj5Vvc7xxM4wXHBrVZA .

Should I report this elsewhere, or is this the spot?

If I -chop 1, 2, or 3 pixels off the right, it still does it, but if I chop off 4 pixels it goes back to working fine.

Oh yes, it's significantly different. Sorry about that.

I downloaded from this new link and verified it still happens with this:
https://1drv.ms/u/s!As3ZytCDCPbLj5Vuu8VhCI_JXEwOdw

Windows: Edition: Windows 10 Home Version 1809 OS build: 17763.124 IM: Version: ImageMagick 7.0.8-14 Q16 x64 2018-10-24 Image: https://i.imgur.com/TccL95U.jpg Fuzz values from 57% to 63% in -format "%@" info: all output the same 20 digit number for width. The image is only 4960 pixels wide...

Hmm... it seems a large number of the later replies were lost somehow. Regardless, here is my somewhat-final batch file that takes large images (BMP encoded in the batch file, but easy to change) that ImageMagick failed to deskew for me and: makes a smaller working copy figures out how much the copy...

I think I found my answer:

<5 degrees would be fine, I think my problem is the size of the original image. If I resize it down it works. Is there a way to get deskew to output a degrees rotation needed like your unrotate does if you don't specify out outfile? I tried not specifying one using deskew but it threw an error. That...

Oh ho! I had put a reduced resolution (25%) version of the scan on imgur just so it wouldn't be ridiculously large. That's not what I was testing on. When I test on the one I put on imgur it works. Is there a max size that deskew will work with? EDIT: And if that's the case, is there a way to get de...

Hmm. I am starting to think it really is just me.

On ubuntu with ImageMagick 6.9.7-4 Q16 neither of the commands you provided produced a change. Neither did ImageMagick 7.0.4-8 Q16 on Windows 10.

Thank you! I'll give that a try as soon as I reach the office.

I'm trying to deskew scans of vintage postcards on a black cardstock background (so not pure black) and ImageMagick's deskew is not working for me at any fuzziness level. I've also tried Fred's unrotate script with similar non-results. Sometimes both deskew and unrotate think the image needs zero ro...