1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
# pyssim
This module implements the Structural Similarity Image Metric (SSIM).
Original code written by Antoine Vacavant from
http://isit.u-clermont1.fr/~anvacava/code.html, with modifications by
Christopher Godfrey and Jeff Terrace.
## Installation
pip install pyssim
## Running
$ pyssim --help
usage: pyssim [-h] image1.png image path with* or image2.png
Compares an image with a list of images using the SSIM metric.
Example:
pyssim test-images/test1-1.png "test-images/*"
positional arguments:
image1.png
image path with* or image2.png
optional arguments:
-h, --help show this help message and exit
--cw compute the complex wavelet SSIM
--width WIDTH scales the image before computing SSIM
--height HEIGHT scales the image before computing SSIM
## Compatibility
pyssim is known to work with Python 3.9 to 3.13.
## Development
To run from a local git client:
PYTHONPATH="." python ssim
To run the lint checks:
pylint --rcfile=.pylintrc -r n ssim setup.py
To test:
$ PYTHONPATH="." python ssim test-images/test1-1.png "test-images/*"
test-images/test1-1.png - test-images/test1-1.png: 1
test-images/test1-1.png - test-images/test1-2.png: 0.9980119
test-images/test1-1.png - test-images/test2-1.png: 0.6726952
test-images/test1-1.png - test-images/test2-2.png: 0.6485879
## References
* [1] Z. Wang, A. C. Bovik, H. R. Sheikh and E. P. Simoncelli. Image quality assessment: From error visibility to structural similarity. IEEE Transactions on Image Processing, 13(4):600--612, 2004.
* [2] Z. Wang and A. C. Bovik. Mean squared error: Love it or leave it? - A new look at signal fidelity measures. IEEE Signal Processing Magazine, 26(1):98--117, 2009.
* [3] Z. Wang and E.P. Simoncelli. Translation Insensitive Image Similarity in Complex Wavelet Domain. Acoustics, Speech, and Signal Processing, 2005. Proceedings. (ICASSP '05). IEEE International Conference on , vol.2, no., pp.573,576, March 18-23, 2005
|
