Library that can converts between polar and cartesian domain.
Project description
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
Prerequisites
Python 3
- Dependencies:
numpy
scipy
scikit-image
Installing polarTransform
polarTransform is currently available on PyPi. The simplest way to install alone is using pip at a command line:
pip install polarTransform
which installs the latest release. To install the latest code from the repository (usually stable, but may have undocumented changes or bugs):
pip install git+https://github.com/addisonElliott/polarTransform.git
For developers, you can clone the polarTransform repository and run the setup.py file. Use the following commands to get a copy from GitHub and install all dependencies:
git clone pip install git+https://github.com/addisonElliott/polarTransform.git cd polarTransform pip install .
or, for the last line, instead use:
pip install -e .
to install in ‘develop’ or ‘editable’ mode, where changes can be made to the local working code and Python will use the updated polarTransform code.
Test and coverage
To test the code on any platform, make sure to clone the GitHub repository to get the tests and:
python tests/test_polarTransform.py
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')
Resulting polar domain image:
Converting back to the cartesian image results in:
Next Steps
To learn more about polarTransform, see the documentation.
License
polarTransform has an MIT-based license.
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