Hyperspectral image, video compression using sparse tucker tensor decomposition. Issue 4 (4th January 2021)

• Record Type: Journal Article
• Authors: Das, Samiran
• Is Part Of: IET image processing. Volume 15:Issue 4(2021)
• Page Start: 964
• Page End: 973
• Publication Date: 2021-01-04
• Subjects: Instrumentation and techniques for geophysical, hydrospheric and lower atmosphere research -- Optical, image and video signal processing -- Image and video coding -- Computer vision and image processing techniques -- Video signal processing; Image processing -- Periodicals; 621.36705
• DOI: 10.1049/ipr2.12077
• Languages: English
• ISSNs: 1751-9659

Abstract

Abstract: Hyperspectral image and videos provide rich spectral information content, which facilitates accurate classification, unmixing, temporal change detection, and so on. However, with the rapid improvements in technology, the data size has increased many folds. To properly handle the enormous data volume, efficient methods are required to compress the data. This paper proposes a multi‐way approach for compression of the hyperspectral image or video sequence. In this approach, a differential representation of the data is first obtained. In the case of hyperspectral images, the difference between consecutive bands is obtained and in case of videos, the difference between consecutive frames is computed. In the next step, a sparse Tucker tensor decomposition is performed and the sparse core tensor obtained. Finally, the core tensor and the corresponding factor matrices are truncated and the data encoded to obtain the compressed version for transmission. The compression method utilises the multi‐way structure of the data and hence can be extended for hyperspectral videos. Experimental results on several real data imply that the proposed compression approach obtains better efficiency in terms of compression ratio, signal to noise ratio.