A novel Hexa data encoding method for 2D image crypto-compression

SIDDEQ, Mohammed M. and RODRIGUES, Marcos A. (2020). A novel Hexa data encoding method for 2D image crypto-compression. Multimedia Tools and Applications, 79 (9-10), 6045-6059.

11042_2019_Article_8405.pdf - Published Version
Creative Commons Attribution.

Download (2MB) | Preview
Open Access URL: https://link.springer.com/article/10.1007/s11042-0... (Published version)
Link to published version:: https://doi.org/10.1007/s11042-019-08405-3


Abstract: We proposed a novel method for 2D image compression-encryption whose quality is demonstrated through accurate 2D image reconstruction at higher compression ratios. The method is based on the DWT-Discrete Wavelet Transform where high frequency sub-bands are connected with a novel Hexadata crypto-compression algorithm at compression stage and a new fast matching search algorithm at decoding stage. The novel crypto-compression method consists of four main steps: 1) A five-level DWT is applied to an image to zoom out the low frequency sub-band and increase the number of high frequency sub-bands to facilitate the compression process; 2) The Hexa data compression algorithm is applied to each high frequency sub-band independently by using five different keys to reduce each sub-band to1/6of its original size; 3) Build a look up table of probability data to enable decoding of the original high frequency sub-bands, and 4) Apply arithmetic coding to the outputs of steps (2) and (3). At decompression stage a fast matching search algorithm is used to reconstruct all high frequency sub-bands. We have tested the technique on 2D images including streaming from videos (YouTube). Results show that the proposed crypto-compression method yields high compression ratios up to 99% with high perceptual quality images.

Item Type: Article
Additional Information: ** From Springer Nature via Jisc Publications Router ** Licence for this article: https://creativecommons.org/licenses/by/4.0/ **Journal IDs: pissn 1380-7501; eissn 1573-7721 **Article IDs: publisher-id: s11042-019-08405-3; manuscript: 8405 **History: published 03-2020; online 12-12-2019; published_online 12-12-2019; registration 31-10-2019; accepted 22-09-2019; rev-recd 29-07-2019; submitted 26-07-2018
Uncontrolled Keywords: Article, 2D image compression, DWT, Hexadata encoding, Fast matching search
Identification Number: https://doi.org/10.1007/s11042-019-08405-3
Page Range: 6045-6059
SWORD Depositor: Colin Knott
Depositing User: Colin Knott
Date Deposited: 08 Jun 2020 14:21
Last Modified: 18 Mar 2021 01:32
URI: https://shura.shu.ac.uk/id/eprint/26412

Actions (login required)

View Item View Item


Downloads per month over past year

View more statistics