The Letter introduces a novel filtering method based on convolutional neural networks (CNNs) for quality enhancement of light field (LF) images captured by a plenoptic camera and compressed using high-efficiency video coding (HEVC). The method takes advantage of the macro-pixel (MP) structure specific to the LF images and proposes a novel MP-wise filtering approach based on a novel deep neural network architecture. The proposed CNN-based method achieves an outstanding performance when HEVC is employed without its in-loop filters. Experimental results show high luminance-peak signal-to-noise ratio (Y-PSNR) gains and average Y-Bj{o}ntegaard delta (BD)-rate savings of 25.6% over HEVC on a large data set.
Huang, H, Schiopu, I & Munteanu, A 2020, 'Macro-pixel-wise CNN-based filtering for quality enhancement of light field images', Electronics Letters, vol. 56, no. 25, el.2020.2344 , pp. 1413-1416. https://doi.org/10.1049/el.2020.2344
Huang, H., Schiopu, I., & Munteanu, A. (2020). Macro-pixel-wise CNN-based filtering for quality enhancement of light field images. Electronics Letters, 56(25), 1413-1416. Article el.2020.2344 . https://doi.org/10.1049/el.2020.2344
@article{1aa3bba773a1485e8c5163f341cad032,
title = "Macro-pixel-wise CNN-based filtering for quality enhancement of light field images",
abstract = "The Letter introduces a novel filtering method based on convolutional neural networks (CNNs) for quality enhancement of light field (LF) images captured by a plenoptic camera and compressed using high-efficiency video coding (HEVC). The method takes advantage of the macro-pixel (MP) structure specific to the LF images and proposes a novel MP-wise filtering approach based on a novel deep neural network architecture. The proposed CNN-based method achieves an outstanding performance when HEVC is employed without its in-loop filters. Experimental results show high luminance-peak signal-to-noise ratio (Y-PSNR) gains and average Y-Bj{o}ntegaard delta (BD)-rate savings of 25.6% over HEVC on a large data set.",
keywords = "Deep Learning, Quality Enhancement, Light field image, HEVC",
author = "Hongyue Huang and Ionut Schiopu and Adrian Munteanu",
year = "2020",
month = nov,
day = "4",
doi = "10.1049/el.2020.2344",
language = "English",
volume = "56",
pages = "1413--1416",
journal = "Electronics Letters",
issn = "0013-5194",
publisher = "Institution of Engineering and Technology",
number = "25",
}