Skip to main content

Pure Python implementation of subpixel edge location algorithm based on partial area effect

Project description

subpixel-edges

A pure Python implementation of the subpixel edge location algorithm from https://doi.org/10.1016/j.imavis.2012.10.005

The reference implementation can be found on from https://it.mathworks.com/matlabcentral/fileexchange/48908-accurate-subpixel-edge-location

Installation

pip install subpixel-edges

Quick start

For a quick overview of the code functionalities, install the following packages first:

$ pip install subpixel-edges
$ pip install opencv-python
$ pip install matplotlib

Then go into the directory you want to use and copy the image you want to analyze (let's say lena.png). Now open a Python console and execute the following commands:

import cv2
import matplotlib.pyplot as plt

from subpixel_edges import subpixel_edges

# (optional) 
help(subpixel_edges) 

img = cv2.imread("lena.png")
img_gray = (cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)).astype(float)
edges = subpixel_edges(img_gray, 25, 0, 2)

plt.imshow(img)
plt.quiver(edges.x, edges.y, edges.nx, -edges.ny, scale=40)
plt.show()

Development

git clone https://github.com/gravi-toni/subpixel-edges.git
pip install -e .

To run the tests (includes OpenCV):

pip install -e .[tests]

To run the examples (includes OpenCV):

pip install -e .[examples]

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

subpixel-edges-0.1.1.tar.gz (11.1 kB view hashes)

Uploaded source

Built Distribution

subpixel_edges-0.1.1-py3-none-any.whl (15.6 kB view hashes)

Uploaded py3

Supported by

AWS AWS Cloud computing Datadog Datadog Monitoring Facebook / Instagram Facebook / Instagram PSF Sponsor Fastly Fastly CDN Google Google Object Storage and Download Analytics Huawei Huawei PSF Sponsor Microsoft Microsoft PSF Sponsor NVIDIA NVIDIA PSF Sponsor Pingdom Pingdom Monitoring Salesforce Salesforce PSF Sponsor Sentry Sentry Error logging StatusPage StatusPage Status page