Projects top banner

Averse Deep Semantic Segmentation

Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS

Conference Paper

Semantic segmentation consists in predicting whether any given pixel is part of the object of interest or not. Two types of errors are therefore possible: false positives and false negatives. For visualization and emphasis purposes, we might want to put special effort into reducing one type of error in detriment of the other. A common practice is to define the two types of errors as a relative trade-off using a cost matrix. However, it might be more natural for humans to define the trade-off in terms of an absolute constraint on one type of errors while trying to minimize the other. Previously, we suggested possible approaches to introduce this absolute trade-off in binary classifiers. Extending to semantic segmentation, we propose a threshold on the sigmoid layer and modifications to gradient descent such as adding a new term to the loss function and training in two phases. The latter produced the more resilient results, with a simple threshold being sufficient in most cases. © 2019 IEEE.

R Cruz

JS Cardoso

Publication

Year of publication: 2019

Identifiers

ISSN: 1557-170X

Other: 31945841

Locators

Alternative Titles

Preprint

File