Diyala Journal for Pure Science
Scientific Refereed Journal Published By College of Science - University of Diyala
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Diyala Journal for Pure Science DJPS
P- ISSN:2222-8373, E-ISSN:2518-9255
Volume 13, Issue 3, Part 2 , July. 2017
Correlated Hierarchical Autoregressive Models Image Compression
Ghadah Al-Khafaji, Taha Mohammed Hasan , Salam Abdulkhaleq Noaman
Year: 2017, Volume: 13, Issue: 3, Part: 2
Pages: 1-14, DOI: http://dx.doi.org/10.24237/djps.1303.178C
In this paper, a Correlated Hierarchical Autoregressive Model (CHARM) method for image compression is proposed. It based on using multi-layered modeling concept of correlated autoregressive coefficients, which is a modified version of Hierarchical Autoregressive Model (HARM). The test results indicate that the suggested techniques improve the compression ratio along with preserving the image quality compared to traditional predictive coding or autoregressive model and HARM on a series of selected images.
Keywords: Image compression, autoregressive model and hierarchical autoregressive model