1 unstable release
0.1.0 | Mar 6, 2019 |
---|
#23 in #differential
23 downloads per month
8KB
71 lines
Dhash
This crate allows a dhash
signature to be constructed from an image.
Requires the image
crate
A dhash
is a differential gradient hash that compares the difference in gradient between adjacent pixels, and provides a 64 bit signature of an image.
A dhash
can be used to compare against other images for similarity and is resilient to differences in:
- Aspect Ratio
- Image Size
- Brightness and Contrast
Implementation details taken from the Kind of Like That blog
Usage (CLI)
Install this crate:
cargo install dhash
Run dhash <img1>
to print out a dhash
of the image at path img1
$ dhash test.jpg
dhash for test.jpg is `13547707017824698364`
Run dhash <img1> <img2>
to print out a dhash
of both images and the distance between them (a lower number is closer):
$ dhash test.jpg other.jpg
dhash for test.jpg is `4485936524854165493`
dhash for other.jpg is `3337201687795727957`
distance is: 11
Dependencies
~9–18MB
~211K SLoC