Volume 2, Number 1 (2019)
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Home > Journals > SCIREA Journal of Electrics, Communication > Archive > Paper Information

Multi Scale Multi Directional Region of Interest Based Image Compression Using Non Subsampled Contourlet Transform

Volume 2, Issue 1, February 2019    |    PP. 1-18    |PDF (892 K)|    Pub. Date: May 5, 2019
   274 Downloads     2799 Views  

N.Udaya Kumar, Professor/ECE SRKR Engineering College Bhimavaram, 534204, India
M.Madhavi Latha, Professor/ECE JNTUH Hyderabad, 500085, India
E.V. Krishna Rao, Professor/ECE LBRCE Mylavaram, 521230, India
K.Padma Vasavi, Professor/ECE SVECW Bhimavaram, 534202, India

An increase in the demand for storing the large archrivals’ of medical image data bases and the image data base for surveillance applications paved way for Region of Interest (ROI) based image compression techniques. Different ROI based coding techniques identify fixed shaped regions for compression. However, the real world images are having irregular shaped ROI. So, extraction of directional information along with identification of relevant information along multiple resolutions is very important for performing ROI based compression. Therefore, in this paper a Non Subsampled Contourlet Based ROI Compression for low resolution images is proposed. Furthermore, the ROI is encoded using lossless encoding techniques for obtaining good resolution and the rest of the image is coded with lossy image compression techniques for obtaining high compression ratio. The proposed algorithm is compared with JPEG2000 standard which uses ROI for compression of images, with arithmetic encoder which is a lossless image compression method and also with SPIHT encoder which is a lossy image compression method.

non subsampled contour-let, ROI, Compression

Cite this paper
N.Udaya Kumar, M.Madhavi Latha, E.V. Krishna Rao, K.Padma Vasavi, Multi Scale Multi Directional Region of Interest Based Image Compression Using Non Subsampled Contourlet Transform, SCIREA Journal of Electrics, Communication. Vol. 2 , No. 1 , 2019 , pp. 1 - 18 .


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