Skip to main content

A log-Gabor pyramid is an oriented multiresolution scheme for images inspired by biology.

Project description

[![Binder](https://mybinder.org/badge.svg)](https://mybinder.org/v2/gh/bicv/LogGabor/master) [![PyPI version](https://badge.fury.io/py/LogGabor.svg)](https://badge.fury.io/py/LogGabor) [![Research software impact](http://depsy.org/api/package/pypi/LogGabor/badge.svg)](http://depsy.org/package/python/LogGabor)

LogGabor

A log-Gabor pyramid is an oriented multiresolution scheme for images inspired by biology.

Examples and documentation is available @ https://pythonhosted.org/LogGabor/

![ScreenShot of the implementation provided in http://invibe.net/LaurentPerrinet/Publications/Fischer07cv](http://invibe.net/cgi-bin/index.cgi/Figures/Fischer07cv/FigureUn?action=AttachFile&do=get&target=loggabor.png)

Log-Gabor filters. To represent the edges of the image at different levels and orientations, we use a multi-scale approach constructing a set of filters of different scales and according to oriented log-Gabor filters. This is represented here by stacking images on a Golden Rectangle Perrinet (2008), that is where the aspect ratio is the golden section ϕ=1+5√2. The level represents coefficients’ amplitude, hue corresponds to orientation. We present here the base image on the left and the successive levels of the pyramid in a clockwise fashion (for clarity, we stopped at level 8). Note that here we also use ϕ^2 (that is ϕ+1) as the down-scaling factor so that the pixelwise resolution of the pyramid images correspond across scales.

This package provides with a python implementation.

More information is available @ http://nbviewer.ipython.org/github/bicv/LogGabor/blob/master/LogGabor.ipynb

![ScreenShot ](http://invibe.net/cgi-bin/index.cgi/Figures/Perrinet08spie/FigureDeux?action=AttachFile&do=get&target=GoldenPyramid.png)

The Golden Laplacian Pyramid. To represent the edges of the image at different levels, we may use a simple recursive approach constructing progressively a set of images of decreasing sizes, from a base to the summit of a pyramid (see https://laurentperrinet.github.io/publication/perrinet-15-bicv for more details).

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

LogGabor-20191113.tar.gz (28.2 MB view details)

Uploaded Source

File details

Details for the file LogGabor-20191113.tar.gz.

File metadata

  • Download URL: LogGabor-20191113.tar.gz
  • Upload date:
  • Size: 28.2 MB
  • Tags: Source
  • Uploaded using Trusted Publishing? No
  • Uploaded via: twine/2.0.0 pkginfo/1.5.0.1 requests/2.22.0 setuptools/41.6.0 requests-toolbelt/0.9.1 tqdm/4.37.0 CPython/3.7.5

File hashes

Hashes for LogGabor-20191113.tar.gz
Algorithm Hash digest
SHA256 5a9fd6ff96ef2b2f0565f7a22e0762e92d96620dad6a2b160ce369f4cd118d4a
MD5 d36a0a06a390e4f4eae7ea075225033a
BLAKE2b-256 1fcd83ba211d84ae54353bfe4973b88007c6ba4a082b5a8558852986fcf91e09

See more details on using hashes here.

Supported by

AWS AWS Cloud computing and Security Sponsor Datadog Datadog Monitoring Fastly Fastly CDN Google Google Download Analytics Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Sentry Sentry Error logging StatusPage StatusPage Status page