Use this tag for questions related to the changing/combining of files containing pictures or other images. (Dumps of filesystems are often called images, but handling those is not called image-manipulation)

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12
votes
4answers
19k views

pdf to jpg without quality loss; gscan2pdf

When I convert a pdf file to bunch of jpg files using convert -quality 100 file.pdf page_%04d.jpg I have appreciable quality loss. However if I do the following, there is no (noticeable) quality ...
0
votes
1answer
55 views

Writing to picture which is scanned document

I have a scanned contract and I need to change only a few names and dates in the contract. It's easy to scan the document but impossible to ocr the document and open in *.doc format. Is there an ...
3
votes
2answers
658 views

Oneliner for slicing an image?

I'm looking for a oneliner command that would slice an image into given proportions. Say input would be filename and slice dimensions. Are there any standard command-line tools for this? I tried ...
3
votes
2answers
1k views

Measuring the length of a curved line

Is there a software tool that will allow me to measure the length of a curved line? I have a series of lines in an image that I want to measure the length of. I have a tablet so I can trace over the ...
2
votes
1answer
769 views

How to scale xvfb?

I'm looking to develop a web-application that translates request parameters into a PNG/GIF chart. I'm looking to reuse an open source charting library, but I have concerns about the scalability. A ...
5
votes
3answers
188 views

What tools to use to eliminate metadata in graphics files?

What tools can I use to delete all the EXIF, IPTC, XMP, etc metadata from graphics files?
12
votes
3answers
3k views

remove extra tilespace from a montage (ImageMagick) composite image?

I have a bunch of photos. They're all the same height, and I'm trying to put them together into a composite image using ImageMagick's montage program via Bash. The problem is that by default, the tile ...
3
votes
1answer
1k views

Montage together five gifs

I have five gifs all with the same number of frames and the same framerate. Is it possible to montage these together into one gif where each frame is similar to a normal montage of static images and ...