Abstract
Linear morphological openings and closings are important non-linear operators from mathematical morphology. In practical applications, many different orientations of digital line segments must typically be considered. In this paper, we (1) review efficient sequential as well as parallel algorithms for the computation of linear openings and closings; (2) compare the performance of CPU implementations of four state-of-the-art algorithms; (3) describe GPU implementations of two recent efficient algorithms allowing arbitrary orientation of the line segments; (4) propose, as the main contribution, an efficient and optimized GPU implementation of linear openings; and (5) compare the performance of all implementations on real images from various applications. From our experimental results, it turned out that the proposed GPU implementation is suitable for applications with large, industrial images, running under severe timing constraints.
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Notes
General-purpose computing on graphics processing units.
Available in Fulguro image processing library [32].
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Acknowledgments
This work has been done during ERASMUS stage of Pavel Karas at ESIEE Paris. The presented work is the result of collaboration between ESIEE Paris (A3SI team), Mines-ParisTech (CMM) and Masaryk University in Brno (CBIA). This stay period of Pavel Karas at ESIEE Paris has been also supported by the Ministry of Education, Youth and Sport of the Czech Republic (Projects No. MSM-0021622419 and No. LC535). This research was also supported by the Grant Agency of the Czech Republic (Grant No. P302/12/G157).
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Karas, P., Morard, V., Bartovský, J. et al. GPU implementation of linear morphological openings with arbitrary angle. J Real-Time Image Proc 10, 27–41 (2015). https://doi.org/10.1007/s11554-012-0248-7
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DOI: https://doi.org/10.1007/s11554-012-0248-7