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https://github.com/sunsided/opencv-cartoon-effect
A cartoon effect with OpenCV in Rust
https://github.com/sunsided/opencv-cartoon-effect
cartoonify cartoonization comic dithering-images halftone image-processing opencv rust
Last synced: 13 days ago
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A cartoon effect with OpenCV in Rust
- Host: GitHub
- URL: https://github.com/sunsided/opencv-cartoon-effect
- Owner: sunsided
- License: eupl-1.2
- Created: 2023-07-01T21:01:55.000Z (over 1 year ago)
- Default Branch: main
- Last Pushed: 2024-05-11T14:37:42.000Z (6 months ago)
- Last Synced: 2024-10-11T02:29:56.858Z (about 1 month ago)
- Topics: cartoonify, cartoonization, comic, dithering-images, halftone, image-processing, opencv, rust
- Language: Rust
- Homepage:
- Size: 508 KB
- Stars: 1
- Watchers: 3
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE.md
Awesome Lists containing this project
README
# Faux cartoon effect with OpenCV
Common tutorials around the web suggest that cartoon filters can be easily done by using [median blurring](https://docs.opencv.org/3.4/d4/d86/group__imgproc__filter.html#ga564869aa33e58769b4469101aac458f9),
adaptive thresholding and edge detection. While this works, it achieves sub-par results almost certainly.
This approach replaces median blurring
with [anisotropic diffusion](https://docs.opencv.org/3.4/df/d2d/group__ximgproc.html#gaffedd976e0a8efb5938107acab185ec2)
and uses [edge dilation](https://docs.opencv.org/3.4/d4/d86/group__imgproc__filter.html#ga4ff0f3318642c4f469d0e11f242f3b6c)
for more natural looking "strokes", as well as
[pyramid mean shift filtering](https://docs.opencv.org/3.4/d4/d86/group__imgproc__filter.html#ga9fabdce9543bd602445f5db3827e4cc0)
for color reduction to achieve a more comic-like effect.
This, of course, also only works with proper tuning of the parameters.
Here's the input image and the produced result for comparison. An alternative print-like faux-CMYK half-toning step was
added using the [rotated-grid](https://github.com/sunsided/rotated-grid) crate;
to play around with that, simply run the code with `--features=halftone`.
| Input | Output | Halftoned |
|---------------------|------------------------------|---------------------------|
|  |  |  |
YMMV. 🐱