Compressive sensing with a block-strategy for fast image acquisitions

Thibault Leportier; Vladyslav Selotkin; Myungha Kim; Jung-Young Son; Min-Chul Park

doi:10.1117/12.2303470

16 May 2018 Compressive sensing with a block-strategy for fast image acquisitions

Thibault Leportier, Vladyslav Selotkin, Myungha Kim, Jung-Young Son, Min-Chul Park

Proceedings Volume 10666, Three-Dimensional Imaging, Visualization, and Display 2018; 1066608 (2018) https://doi.org/10.1117/12.2303470
Event: SPIE Commercial + Scientific Sensing and Imaging, 2018, Orlando, FL, United States

Abstract

Compressive sensing is a recent technique that was developed for the reconstruction of large signals from a small number of measurements. It relies on the assumption that the signal to recover is sparse, and the performance of the reconstruction is depending on the level of sparsity. However, in practical case the sparsity of the image to recover is unknown and it is then difficult to estimate the number of measurements necessary to reconstruct the image with a satisfying quality. In this study, we examined a strategy where the image is reconstructed by CS in two steps. A first step with a small number of measurements to estimate the number of points needed, and a second step for the final reconstruction. In addition, we investigated the benefits to create a partition of the image of interest to estimate locally the number of measurements needed for the reconstruction. We demonstrated that our strategy could be used to reconstruct images presenting a PSNR similar to the one obtained with the conventional method, but with fewer measurements.

Citation Download Citation

Thibault Leportier, Vladyslav Selotkin, Myungha Kim, Jung-Young Son, and Min-Chul Park "Compressive sensing with a block-strategy for fast image acquisitions ", Proc. SPIE 10666, Three-Dimensional Imaging, Visualization, and Display 2018, 1066608 (16 May 2018); https://doi.org/10.1117/12.2303470

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