# An Efficiently Coupled Shape and Appearance Prior for Active Contour Segmentation

arXiv: https://arxiv.org/abs/2103.14887 · HTML: https://mlsanity.com/paper/2103.14887/

## Key facts

- No citing papers in the map yet (data through 14 Oct 2026).
- Builds on 0 of its 23 references that are in the map.
- First posted on arXiv 27 Mar 2021.

## Abstract (arXiv)

This paper proposes a novel training model based on shape and appearance features for object segmentation in images and videos. Whereas most such models rely on two-dimensional appearance templates or a finite set of descriptors, our appearance-based feature is a one-dimensional function, which is efficiently coupled with the object's shape by integrating intensities along the object's iso-contours. Joint PCA training on these shape and appearance features further exploits shape-appearance correlations and the resulting training model is incorporated in an active-contour-type energy functional for recognition-segmentation tasks. Experiments on synthetic and infrared images demonstrate how this shape and appearance training model improves accuracy compared to methods based on the Chan-Vese energy.