#image processing
6 resultsMultilevel Optimal Transport: a Fast Approximation of Wasserstein-1 distances
Jialin Liu, Wotao Yin, Wuchen Li +1
The paper introduces a multilevel primal‑dual algorithm that rapidly approximates the Wasserstein‑1 distance, achieving solutions for 512×512 images in under a few seconds on a sin…
Arc-support Line Segments Revisited: An Efficient and High-quality Ellipse Detection
Changsheng Lu, Siyu Xia, Ming Shao +1
The paper introduces an ellipse detection algorithm that uses arc-support line segments to achieve both high accuracy and fast processing in real-world images.
4X4 Census Transform
Olivier Rukundo
The paper introduces a 4×4 Census Transform that uses a sixteen‑pixel kernel with overlapping 3×3 groups to generate binary strings for each pixel, yielding higher texture crispnes…
PyLops -- A Linear-Operator Python Library for large scale optimization
Matteo Ravasi, Ivan Vasconcelos
The paper introduces PyLops, an open-source Python library that lets users define and combine linear operators without building explicit matrices, enabling efficient large‑scale op…
On the Computation of Kantorovich-Wasserstein Distances between 2D-Histograms by Uncapacitated Minimum Cost Flows
Federico Bassetti, Stefano Gualandi, Marco Veneroni
The paper proposes a method to compute the order‑1 Kantorovich‑Wasserstein distance between two‑dimensional histograms by reducing the classic transportation problem to an uncapaci…
A Color Compensation Method Using Inverse Camera Response Function for Multi-exposure Image Fusion
Artit Visavakitcharoen, Yuma Kinoshita, Hitoshi Kiya
The paper proposes a method that estimates an inverse camera response function from multi-exposure photos to recover an HDR radiance map, which is then used to correct color distor…