Papers › Redistributor: Transforming Empirical Data Distributions
Redistributor: Transforming Empirical Data Distributions
Pavol Harar, Dennis Elbrächter, Monika Dörfler, Kory D. Johnson
We present an algorithm and package, Redistributor, which forces a collection of scalar samples to follow a desired distribution. When given independent and identically distributed samples of some random variable S and the continuous cumulative distribution function of some desired target T, it provably produces a consistent estimator of the transformation R which satisfies R(S)=T in distribution. As the distribution of S or T may be unknown, we also include algorithms for efficiently estimating these distributions from samples. This allows for various interesting use cases in image processing, where Redistributor serves as a remarkably simple and easy-to-use tool that is capable of producing visually appealing results. For color correction it outperforms other model-based methods and excels in achieving photorealistic style transfer, surpassing deep learning methods in content preservation. The package is implemented in Python and is optimized to efficiently handle large datasets, making it also suitable as a preprocessing step in machine learning. The source code is available at https://github.com/paloha/redistributor.
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