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Title: Improvements of the inverse compositional algorithm for parametric motion estimation
Authors: Briand, Thibaud
Facciolo, Gabriele
Sánchez, Javier 
UNESCO Clasification: 220990 Tratamiento digital. Imágenes
Keywords: Inverse compositional algorithm
Parametric motion estimation
Boundary handling
Gradient estimation
Issue Date: 2018
Journal: Image Processing On Line 
Abstract: In this work, we propose several improvements of the inverse compositional algorithm for parametric registration. We propose an improved handling of boundary pixels, a different color handling and gradient estimation, and the possibility to skip scales in the multiscale coarse-to-fine scheme. In an experimental part, we analyze the influence of the modifications. The estimation accuracy is at least improved by a factor 1.3 while the computation time is at least reduced by a factor 2.2 for color images.The C++ source code, the code documentation, and the online demo are accessible at the web page of this article 1 . Compilation and usage instruction are included in the README.txt file of the archive.
ISSN: 2105-1232
DOI: 10.5201/ipol.2018.222
Source: Image Processing On Line [ISSN 2105-1232], v. 8, p. 435–464
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