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Questions tagged [graphicsmagick]

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2 votes
2 answers
223 views

How to find duplicate images, possibly with different resolutions?

I have some images (photos) and there are duplicates but no matter how I sort them they are scattered because of resolution and irregular naming. I tried gm compare but can't figure out which metric ...
yarns's user avatar
  • 145
0 votes
0 answers
37 views

Connected components labeling in GraphicsMagick?

Is there a way to scan the image pixel by pixel and print the coordinates of each pixel regions by color? similiar to this ImageMagick´s feature Uniquely Label Connected Regions. I'd like to do it in ...
Rasec Malkic's user avatar
1 vote
1 answer
170 views

How do I extract video frames for editing one at a time?

I'm trying to apply graphicsmagick v1.3.42 filters/resizing to frames from videos extracted with ffmpeg v6.1. The process of extracting and resizing all frames uses alot of space, I want to iterate ...
yarns's user avatar
  • 145
1 vote
1 answer
837 views

How can I with Linux easily create a collage of passport photos?

I can easily crop a photo to the right dimensions or use an online tool, but I need to make it into a 4x6 because CVS charges $0.25 for a 4'' x 6'' but they charge $12.99 with a coupon for a 2'' x 2''....
Evan Carroll's user avatar
  • 9,077
0 votes
0 answers
427 views

animated gif speed, nice in ImageMagick or GraphicsMagic, slow in powerpoint

I have N tiff files. In linux I can do convert -delay 0 -loop 0 *.tiff output.gif In linux, using gm animate *.tif I get a nice smooth rotation at a nice speed. And if I recreate N tiff files to ...
ron's user avatar
  • 758
1 vote
1 answer
125 views

inlay or composite image into corner of larger image, GraphicsMagic or ImageMagick

(A) I have a rotation of a part so I have 360 tiff files, which I can animate in ImageMagick and also export to an animated gif. This image is 1920x1080, with a black background, there are 360 of ...
ron's user avatar
  • 758
0 votes
1 answer
168 views

Does GraphicsMagick have inline image crop?

ImageMagick has got Inline Image Crop. Is this also available in GraphicsMagick? E.g., how can I make the following work? > gm montage -tile 2x1 logo:[20x20+50+50] logo: out.gif
Robert Pollak's user avatar
0 votes
1 answer
123 views

Graphicsmagick: combing multiple images are splitting to next line after 1536px

Using GraphicsMagick I have tried something like this gm montage -geometry 256x256 6-0-0.jpg 6-1-0.jpg 6-2-0.jpg 6-3-0.jpg 6-4-0.jpg 6-5-0.jpg 6-6-0.jpg 6-7-0.jpg final.jpg Its creating final.jpg of ...
coure2011's user avatar
  • 1,629
0 votes
1 answer
29 views

What colors does Graphicsmagik support?

I'm using Graphicsmagik from the command-line and I want to specify RGB values. (How) can I do this? What colors / color formats does Graphicsmagik support?
user avatar
0 votes
1 answer
56 views

How do I make weighed average (using alhpa channel as weight) of pictures?

I have multiple similar pictures I want to make aveage of, but not uniformatically. Each zone in pictures should have separate weight, and the weight is encoded in alhpa channel (fully transparent - ...
Vi.'s user avatar
  • 17.3k
7 votes
2 answers
3k views

How to display a picture and print pixel coordinates when I click?

When using ImageMagick or similar command line tools it can be useful to know coordinates of some points in the image. How to display an image (with panning and zooming) and print coordinates of ...
Vi.'s user avatar
  • 17.3k
13 votes
1 answer
10k views

How to auto-trim scanned images using imagemagick or graphicsmagick?

I've got some scanned images in *.jpg format. They are scanned using A4 scanner, in greyscale or colour. Scanned pages have very different dimensions - some A5, some A6, some business cards etc. ...
Arek's user avatar
  • 241
3 votes
1 answer
1k views

transparent gradients with graphicsmagick

I'm trying to create a gradient that goes from transparent to some color. With imageMagick you can do that with (taken from the documentation): convert -size 100x100 gradient:none-firebrick ...
jocke138's user avatar
0 votes
1 answer
665 views

Is there a GraphicsMagick equivalent to ImageMagick's image stack?

Although GraphicsMagick is a fork of ImageMagick, there are dissimilarities between the two, namely in the support of image stacking in ImageMagick, but not in GraphicsMagick. Taken from the ...
naivedeveloper's user avatar
0 votes
1 answer
3k views

How to create a transparent image with GraphicsMagick CLI?

I'm coming up empty handed while trying to find out how to modify the opacity of an image using the GraphicsMagick CLI. I'm simply trying to input a standard image and convert it to the corresponding ...
naivedeveloper's user avatar

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