Title
Light field image quality enhancement by a lightweight deformable deep learning framework for intelligent transportation systems
Date Issued
2021
Access level
open access
Resource Type
journal article
Author(s)
Ribeiro D.A.
Silva J.C.
Lopes Rosa R.
Saadi M.
Mumtaz S.
Wuttisittikulkij L.
Al Otaibi S.
Federal University of Lavras
Publisher(s)
MDPI AG
Abstract
Light field (LF) imaging has multi-view properties that help to create many applications that include auto-refocusing, depth estimation and 3D reconstruction of images, which are required particularly for intelligent transportation systems (ITSs). However, cameras can present a limited angular resolution, becoming a bottleneck in vision applications. Thus, there is a challenge to incorporate angular data due to disparities in the LF images. In recent years, different machine learning algorithms have been applied to both image processing and ITS research areas for different purposes. In this work, a Lightweight Deformable Deep Learning Framework is implemented, in which the problem of disparity into LF images is treated. To this end, an angular alignment module and a soft activation function into the Convolutional Neural Network (CNN) are implemented. For performance assessment, the proposed solution is compared with recent state-of-the-art methods using different LF datasets, each one with specific characteristics. Experimental results demonstrated that the proposed solution achieved a better performance than the other methods. The image quality results obtained outperform state-of-the-art LF image reconstruction methods. Furthermore, our model presents a lower computational complexity, decreasing the execution time.
Volume
10
Issue
10
Language
English
OCDE Knowledge area
Ciencias de la computación
Subjects
Scopus EID
2-s2.0-85105442390
Source
Electronics (Switzerland)
ISSN of the container
20799292
Sponsor(s)
This work was supported by the Brazilian National Council for Scientific and Technological Development (CNPq), and Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) in the following project: Audio-Visual Speech Processing by Machine Learning, under Grant 2018/26455-8. Sattam Al Otaibi would like to thank Taif University Researchers Supporting Project number (TURSP-2020/228), Taif University, Taif, Saudi Arabia. Furthermore, this research is funded by TSRI Fund (CU_FRB640001_01_21_8).
Sources of information:
Directorio de Producción Científica
Scopus