splinebox

A python package for fitting splines. Developed by the EPFL Center for Imaging as part of a collaboration with the Uhlmann Group at EMBL-EBI in Feb 2024.

Features

• Flexible spline fitting for various applications.
• Support for many spline types in any dimesnionality.
• High-perfomance implementation in Python
• Extensive documentation with examples

Installation

You can install splinebox via pip:

pip install splinebox

Usage

Here is a minimal example of cubic B-spline in 2D with 3 knots.

import splinebox
import numpy as np
import matplotlib.pyplot as plt

n_knots = 4
spline = splinebox.spline_curves.Spline(M=n_knots, basis_function=splinebox.basis_functions.B3(), closed=True)
spline.knots = np.array([[1, 2], [3, 2], [4, 3], [1, 1]])

t = np.linspace(0, n_knots, 100)
vals = spline.eval(t, derivative=0)

plt.scatter(spline.knots[:, 0], spline.knots[:, 1])
plt.plot(vals[:, 0], vals[:, 1])
plt.show()

Support

If you encounter any problems, please file and issue describing the issue and include minimal example to reproduce the issue.

Contributing

We welcome contributions! Before you submit a pull request, please ensure that the tests are passing. You can run the tests with pytest. If you are unsure how to implement something, feel free to open an issue to discuss.

License

This is an open source project licensed under the BSD-3-Clause License.