kromo
kromo is a play on words, combining "chromatic aberration" and "lo-mo photography". I made kromo because perfect optics are overrated.
Before & After
Image of Berries, 1.0 strength
More Images
Quick Start
$ pip3 install -r requirements.txt
$ python3 kromo.py -v flower.jpg
Original Image: JPEG (1962, 2615) RGB
Dimensions must be odd numbers, cropping...
New Dimensions: (1961, 2615)
Completed in: 43.85s
Usage
$ python3 kromo.py --help
usage: kromo.py [-h] [-s STRENGTH] [-j JITTER] [-y OVERLAY] [-n] [-o OUT] [-v]
filename
Apply chromatic aberration and lens blur to images
positional arguments:
filename input filename
optional arguments:
-h, --help show this help message and exit
-s STRENGTH, --strength STRENGTH
set blur/aberration strength, defaults to 1.0
-j JITTER, --jitter JITTER
set color channel offset pixels, defaults to 0
-y OVERLAY, --overlay OVERLAY
alpha of original image overlay, defaults to 0.0
-n, --noblur disable radial blur
-o OUT, --out OUT write to OUTPUT (supports multiple formats)
-v, --verbose print status messages
Runtime
kromo is slow, just like how film photography used to be. Clone the repo for a blast from the past.
The time complexity is O(n), so a 12MP picture takes 4 times longer than a 3MP picture.