All Questions
Tagged with imagemagick images
63
questions
0
votes
1
answer
51
views
Which compression modes of convert of imagemagick are lossless (with -quality 100)?
On my Debian 12,
$ convert -list compress
B44A
B44
BZip
DXT1
DXT3
DXT5
Fax
Group4
JBIG1
JBIG2
JPEG2000
JPEG
LosslessJPEG
Lossless
LZMA
LZW
None
Piz
Pxr24
RLE
RunlengthEncoded
WebP
ZipS
Zip
Zstd
Which ...
- 149
1
vote
1
answer
38
views
How to layer photos on top of watermark with ImageMagick? [closed]
I am a photographer working on a project which in the end will result in some photos I'm going to post on social media.
But in doing this I want to format some photos with a template I made to make ...
2
votes
1
answer
384
views
Best ImageMagick parameters to upscale image containing text
What are the best ImageMagick parameters to upscale an image that contains text in Latin alphabet?
Take this image as example:
I did some experimenting, for example:
magick convert in.png -filter ...
- 421
0
votes
2
answers
149
views
Merging a folder of 34,000 images in Photoshop
I have a folder of 34,000 images (all the exact same size) and I would like to layer them all on top of each other, doing something equivalent to Photoshop's "Darker Color" layer blending ...
- 121
4
votes
1
answer
8k
views
How do I print an image to a fixed size over multiple pages?
I want to print an image that is 52x44 cm using letter sized pages in Windows 10. So it's similar to this question, but I need to print an image that is larger than one page. Presumably it will take ...
- 245
2
votes
1
answer
2k
views
imagemagick commandline resize to fixed width/height keeping scale
I am currently using PHP, but its resampling is not good enough for my needs.
Suppose I have an image 200x200. I need it resize to 100x50. Then I need it resized scaled down cleanly as possible (here ...
- 439
0
votes
2
answers
237
views
How can I merge/compose/recombine an A3 image from 3 A4 images?
That is not the first time that I have following problem.
I must scan an A3 page but my scanner can only scan A4 pages.
So, I scan 3 A4 images as in following example.
Now, how can I AUTOMATICALLY ...
- 257
0
votes
1
answer
154
views
Reported PPI of jpeg image conflicts between Imagemagick & GIMP
I have a jpeg image and I wish to find out the image resolution in PPI before sending it to someone.
I open it in GIMP 2 (on Ubuntu Studio 20.04) and look at the image properties.
It reports a ...
- 1
0
votes
1
answer
3k
views
Convert PPM to PNG
I recently finished the raytracing tutorial "Ray Tracing in One Weekend", which outputs to PPM. I'm trying to convert to PNG to share my results, but all the solutions I've tried have thrown ...
- 3
2
votes
1
answer
5k
views
Converting JPEG/PNG to TIFF with Imagemagick format results in a file size about 6.5 times bigger
I am told to use TIFF format for my raster images (originally I have both JPEG and PNG images) according to the editorial office of the journal I am submitting a research paper to.
I tried ImageMagick ...
- 123
1
vote
1
answer
216
views
Split image on printable sheet
I have a logo in png on which I specified the size in centimeter ( 40x45 cm).
I need to split that images on two A4 sheet to be able to print it.
I tried to use convert but I have to specified the ...
- 13
0
votes
1
answer
210
views
Can I encode a PNG image losslessly to another format and decode it back into an identical file?
I am archiving roughly 150gb of PNG assets. In an effort to increase the compression ratio of the images, I am trying out FLIF (Free Lossless Image Format). This provides an excellent compression ...
- 139
0
votes
1
answer
213
views
image-magic: combining images to the table
I use convert utility of image-magic to combine several images producing one big summary chart, with all initial images joinded in a single row:
convert "${vizu}"/img_*.png +append "${...
- 147
0
votes
1
answer
750
views
Cannot draw with Imagemagick (no images defined)?
I have seen Can't convert PDF into image, because of 'no images defined' error - but that seems related to PDF specifically.
Here I try to do something else - just to draw an image, using ...
- 1,402
1
vote
2
answers
334
views
Creating various size thumbnails with filename suffix
I've been battling with this issue for a couple of days and haven't been successful in finding a solution on StackExchange nor any Google searches.
I have the following directory structure (...
- 111