Masterarbeit MSTR-2016-08

Bibliograph.
Daten
Bracamontes Hernandez, Luis Manuel: IMAGE RECOSNTRUCTION FROM COMPRESSIVE SENSING MEASUREMENTS USING DEEP LEARNING.
Universität Stuttgart, Fakultät Informatik, Elektrotechnik und Informationstechnik, Masterarbeit Nr. 8 (2016).
63 Seiten, englisch.
CR-Klassif.C.1.3 (Processor Architectures, Other Architecture Styles)
I.2.6 (Artificial Intelligence Learning)
I.4.5 (Image Processing and Computer Vision Reconstruction)
Kurzfassung

Compressed sensing (CS) is a novel signal processing theory stating that a signal can be fully recovered froma number of samples lower than the boundary specified by Nyquist–Shannon sampling theorem, as long as certain conditions are met. In compressed sensing the sampling and compression occur at the same time. While that allows to have signals sampled at lower rates, it creates the necessity to put more workload on the reconstruction side. Most algorithms that are used for recovering the original signal are called iterative, that is because they solve an optimization problem that is computationally expensive. Not only that, but in some cases the reconstruction does not have good quality. This thesis proposes a non-iterativemachine learning method using Deep Learning (DL) in order to recover signals from CS samples in a faster way while maintaining a reasonable quality. DL has already proved its potential in different image applications. As a result, this approach is tested using grayscale images and recent DL software packages. The results are compared against iterative methods in terms of the amount of time needed for full reconstruction as well as the quality of the reconstructed image. The experiments showed both the effectiveness of this method for speeding up the recovery process while maintaining a good quality level.

Volltext und
andere Links
PDF (5238387 Bytes)
Zugriff auf studentische Arbeiten aufgrund vorherrschender Datenschutzbestimmungen nur innerhalb der Fakultät möglich
Abteilung(en)Universität Stuttgart, Institut für Parallele und Verteilte Systeme, Maschinelles Lernen und Robotik
BetreuerToussaint, Prof. Marc; Garcia, Javier Alonso; Cardinaux Dr. Fabien
Eingabedatum1. August 2018
   Publ. Informatik