Questions tagged [image-processing]
The image-processing tag has no usage guidance.
19
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How to print documents to pictures (gif, bmp etc.) on windows
What is the easiest way to capture the printout of a document in a picture (i.e. GIF, BMP etc.)? Making a screenshot does not help, since the printout is different and larger than the screen. Is there ...
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261
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2
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Vertically stack multiple images using ImageMagick
I would like to combine multiple images into one image using ImageMagick. To explain a little better, I want the result to look similar to this:
That is, I have a number of screenshots, and I want to ...
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81
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16
answers
227k
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How can I combine 30,000 images into a timelapse movie?
I have taken 30,000 still images that I want to combine into a timelapse movie. I have tried QuickTime Pro, TimeLapse 3, and Windows Movie Maker, but with such a huge amount of images, each of the ...
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58
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5
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I want to change DPI with ImageMagick without changing the actual byte-size of the image data
In GIMP there is a very simple way to do what I want. I only have the German dialog installed but I’ll try to translate it. I’m talking about going to Picture -> PrintingSize and then adjusting the ...
- 736
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1
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Use find to delete all images under given dimensions
I just used Recuva and Photorec to recover some data off an accidentally-formatted drive. Naturally, the result is every intact file that ever existed on the drive during its lifetime. This means tens ...
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363
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14
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429k
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How to get information about an image (picture) from the Linux command-line?
I'm working on a web app and currently migrating some stuff from an old app, but I hate that I have to open an image editor to get some info about images I'm migrating. Things like image dimensions.
...
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157
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14
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How to prove the authenticity of a screenshot?
I have take some screenshots of chat from Whatsapp web using Windows 8 Snipping Tool. I saved those images in PNG format.
Now I want to prove that those images are the original, not tampered or ...
- 1,521
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4
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81k
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How to crop an image using ImageMagick from the command line?
I am trying to crop a 640x640 image using ImageMagick on the command line.
I need to remove about 20 pixels from the bottom part of the image all the way from left to right. A long strip along the ...
user2041357
14
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7
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6k
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What is the best method to remove duplicate image files from your computer?
I have a lot of duplicate image files on my Windows computer, in different subfolders and with different file names.
What Python script or freeware program would you recommend for removing the ...
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2
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Auto-crop black margins dynamically of scanned images?
I have a notebook photocopied and the photocopy scanned, about 200 pages.
For various reasons I need to print this material. There are large amounts of black areas at the sides of the page (after the ...
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How to convert DICOM images to PNG?
I have some DICOM medical imaging files downloaded from Cancer Imaging Archive. I can convert them from DICOM to several other formats, but as you'll see the conversion isn't working as expected in ...
- 351
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1
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Windows: Batch processing images with GIMP and saving them to new files
On my windows machine, I want to use GIMP to modify all PNG files (filename.png) in the current directory and to save the output file to the sub-directory out/filename.png. The processing that is ...
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2
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3k
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Add 'Save as webp' To windows 10, Right Click Context Menu
I would like to know if there is a way to add 'Save As WebP' image file format to windows 10 right click context menu. Through the registry. WebP images are a new file format that is designed ...
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2
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Getting the predominant colour in an image?
Is it possible to get the predominant colour in an image from the command line? Ideally I'd like it back as hex or RGB.
I thought it might be possible to do this with imagemagick's identify command, ...
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1
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5k
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ffmpeg cropping: 'Invalid too big or non positive size for width'
I'm trying to generate images thumbnails using ffmpeg. The folder contains various jpeg files with different resolutions.
ffmpeg -y -i input1.jpg -filter_complex "scale=(iw*sar)*max(238/(iw*sar)\,358/...
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