All Questions
Tagged with imagemagick colors
10
questions
2
votes
1
answer
1k
views
How to preserve exact colors in Imagemagick svg to png conversion?
Let's take a simple example SVG:
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/...
- 225
1
vote
0
answers
483
views
ImageMagick not setting color space
I'm writing a Python script to batch-process several thousand images. All images are in sRGB, and I'm trying to make a single collage of them. For this I thought I'd first have ImageMagick create an ...
- 121
8
votes
2
answers
12k
views
How to replace colors (shape color and background color)?
I want to change the white background to #3D94DB (Hex triplet notation) and change the black lines to white. The image is as following:
Here is what I have achieved:
convert input.png +level-colors ...
- 321
0
votes
1
answer
361
views
How can I emulate Paint.NET's 'recolor' tool with ImageMagick?
I'd like to recolor one shade of blue to another in an image (for which I also have vector copies). In Paint.NET, I could pick up the color in my source image, choose a replacement color in the color ...
- 1,322
3
votes
2
answers
2k
views
How to identify black and white images in folder of images
I would like to identify the black and white images in a folder containing 300,000 images which are a variety of colours. An alternative method would be to identify the colour images and treat the ...
- 133
1
vote
0
answers
1k
views
How to apply clut (Color Lookup Table) using ImageMagick command line
IamgeMagick dcouments its -clut option as "Replace the channel values in the first image using each corresponding channel in the second image as a color lookup table...This operator is especially ...
- 8,233
2
votes
1
answer
1k
views
ImageMagick failed to convert colors in PDF
I have got a PDF document containing a red font which I want to replace by a black font.
I tried the following command according to this answer:
convert -density 300 doc.pdf -fill black -opaque "#...
- 591
4
votes
2
answers
15k
views
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, ...
- 163
4
votes
1
answer
2k
views
Thumbnail generation with imagemagick doesn't render the correct colors
Generating thumbnails of PDFs with imagemagick sometimes renders incorrect colors. We're using an old version of imagemagick (6.5.7-8, that's the version installed on the heroku servers). Here is the ...
- 161
7
votes
2
answers
2k
views
Mass recoloring of PNGs from command line
Similar to the mass rescaling command this site taught me here, is there a command-line trick for mass recoloring?
To make it specific, suppose I have a bunch of images with RGB and alpha values:
...
- 4,863