Interest of pseudo-focused images for key-points detection in plenoptic imaging

M. Al Assaad; S. Bazeille; T. Laurain; A. Dieterlen; C. Cudel

doi:10.1117/12.2588954

16 July 2021 Interest of pseudo-focused images for key-points detection in plenoptic imaging

M. Al Assaad, S. Bazeille, T. Laurain, A. Dieterlen, C. Cudel

Proceedings Volume 11794, Fifteenth International Conference on Quality Control by Artificial Vision; 1179405 (2021) https://doi.org/10.1117/12.2588954
Event: Fifteenth International Conference on Quality Control by Artificial Vision, 2021, Tokushima, Japan

Abstract

Light-Field (LF) cameras allow the extraction not only of the intensity of light but also of the direction of light rays in the scene, hence it records much more information of the scene than a conventional camera. In this paper, we present a novel method to detect key-points in raw LF images by applying key-points detectors on Pseudo-Focused images (PFIs). The main advantage of this method is that we don’t need to use complex key-points detectors dedicated to light-field images. We illustrate the method in two use cases: the extraction of corners in a checkerboard and the key-points matching in two view raw light-field images. These key-points can be used for different applications e.g. calibration, depth estimation or visual odometry. Our experiments showed that our method preserves the accuracy of detection by re-projecting the pixels in the original raw images.

Citation Download Citation

M. Al Assaad, S. Bazeille, T. Laurain, A. Dieterlen, and C. Cudel "Interest of pseudo-focused images for key-points detection in plenoptic imaging", Proc. SPIE 11794, Fifteenth International Conference on Quality Control by Artificial Vision, 1179405 (16 July 2021); https://doi.org/10.1117/12.2588954

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