polarTransform 2.0.0

Introduction

polarTransform is a Python package for converting images between the polar and Cartesian domain. It contains many features such as specifying the start/stop radius and angle, interpolation order (bicubic, linear, nearest, etc), and much more.

Installing

pip install polarTransform

pip install git+https://github.com/addisonElliott/polarTransform.git

git clone pip install git+https://github.com/addisonElliott/polarTransform.git
cd polarTransform
pip install .

pip install -e .

Test and coverage

Run the following command in the base directory to run the tests:

python -m unittest discover -v polarTransform/tests

Example

Input image:

import polarTransform
import matplotlib.pyplot as plt
import imageio

verticalLinesImage = imageio.imread('IMAGE_PATH_HERE')

polarImage, ptSettings = polarTransform.convertToPolarImage(verticalLinesImage, initialRadius=30,
                                                            finalRadius=100, initialAngle=2 / 4 * np.pi,
                                                            finalAngle=5 / 4 * np.pi)

cartesianImage = ptSettings.convertToCartesianImage(polarImage)

plt.figure()
plt.imshow(polarImage, origin='lower')

plt.figure()
plt.imshow(cartesianImage, origin='lower')

The result is a polar domain image with a specified initial and final radius and angle:

Converting back to the cartesian image results in only a slice of the original image to be shown because the initial and final radius and angle were specified:

Next Steps

To learn more about polarTransform, see the documentation.

License

polarTransform has an MIT-based license.