2D Euclidean distance transform algorithms

Author:

Fabbri Ricardo1,Costa Luciano Da F.2,Torelli Julio C.3,Bruno Odemir M.3

Affiliation:

1. Brown University, Providence, RI

2. Instituto de Física de São Carlos, USP, SP, Brazil

3. Instituto de Ciências Matemáticas e de Computação, USP, SP, Brazil

Abstract

The distance transform (DT) is a general operator forming the basis of many methods in computer vision and geometry, with great potential for practical applications. However, all the optimal algorithms for the computation of the exact Euclidean DT (EDT) were proposed only since the 1990s. In this work, state-of-the-art sequential 2D EDT algorithms are reviewed and compared, in an effort to reach more solid conclusions regarding their differences in speed and their exactness. Six of the best algorithms were fully implemented and compared in practice.

Funder

Fundação de Amparo à Pesquisa do Estado de São Paulo

Conselho Nacional de Desenvolvimento Científico e Tecnológico

Publisher

Association for Computing Machinery (ACM)

Subject

General Computer Science,Theoretical Computer Science

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