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A block parallel majorize-minimize memory gradient algorithm
Abstract : In the field of 3D image recovery, huge amounts of data need to be processed. Parallel optimization methods are then of main interest since they allow to overcome memory limitation issues, while benefiting from the intrinsic acceleration provided by recent multicore computing architectures. In this context, we propose a Block Parallel Majorize-Minimize Memory Gradient (BP3MG) algorithm for solving large scale optimization problems. This algorithm combines a block coordinate strategy with an efficient parallel update. The proposed method is applied to a 3D microscopy image restoration problem involving a depth-variant blur, where it is shown to lead to significant computational time savings with respect to a sequential approach.
Cited literature [20 references]
https://hal.archives-ouvertes.fr/hal-01418417
Contributor : Emilie Chouzenoux Connect in order to contact the contributor
Submitted on : Friday, December 16, 2016 - 4:55:11 PM
Last modification on : Thursday, January 20, 2022 - 5:29:45 PM
Long-term archiving on: : Monday, March 27, 2017 - 11:50:15 PM
Contributor : Emilie Chouzenoux Connect in order to contact the contributor
Submitted on : Friday, December 16, 2016 - 4:55:11 PM
Last modification on : Thursday, January 20, 2022 - 5:29:45 PM
Long-term archiving on: : Monday, March 27, 2017 - 11:50:15 PM
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icip2016.pdf
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