Questions tagged [image-processing]
These challenges involve processing pre-existing image files, by altering them in some way, gathering statistics, or other image processing tasks.
133 questions
15 votes
15 answers
2k views
Rotate an Image
This challenge is simple: Take a path to an png image file as input and overwrite that file with a copy of itself rotated 90 degrees clockwise. You may assume that ...
- 6,098
10 votes
7 answers
536 views
Random Pixels Image Compression
Challenge: Given an integer \$n\$, guaranteed to be \$\geq2\$ and a power of 2, we are going to draw multiply boards either side-by-side or below one another, where the first has dimensions of \$n\$ ...
- 136k
7 votes
2 answers
385 views
Temporally Dither an Image (Image to PWM Image)
Background I want to display rich, vibrant images on my theoretical fancy custom display, but due to budget constraints, it displays everything in 3-bit colour! Whilst Regular Dithering would work, I ...
- 11.7k
12 votes
2 answers
1k views
Smallest image containing one of every RGB color
I'm not sure if this kind of golf is allowed, but here it is. Your objective is to create an image containing one pixel of every possible RGB color. The image with the smallest file size wins. Rules: ...
user100374
19 votes
5 answers
1k views
Generate Green Spray Paint Patterns
This challenge is about creating these neat "green spray paint" patterns: (more pictures below) Loosely explained, they are generated by starting with a black image and a point in the center. ...
- 1,257
4 votes
1 answer
328 views
Draw these shapes
Given: a width, a height, and a set of sets of points. Output: An image where each set of points is connected and colored in (like a shape). Each shape must be a different color from all of the other ...
- 789
7 votes
1 answer
697 views
Hilbertize an image
For a computer vision app I want to do a mapping of an image, in such a way that every pixel fit hilbert curve, instead of conventional layout. So task could be as follows: Task description Given ...
- 313
29 votes
4 answers
1k views
Where's Blackhat?
Challenge Write code which, given an image of a panel from a random xkcd comic, returns a truthy value if Blackhat is in the comic or falsey if not. Who is Blackhat? Blackhat is the unofficial name ...
- 23.6k