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Proceedings Paper

New approach to inter-slice coding of magnetic resonance images
Author(s): Nader Mohsenian; Aria Nosratinia; Bede Liu; Michael T. Orchard
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Paper Abstract

In this paper we present an inter-slice coding scheme for magnetic resonance (MR) image sequences which is based on a triangular matching technique. This scheme provides a powerful tool for MR image sequence compression since there exists a great deal of deformation between contiguous slices of 3D MR data. The proposed inter-slice coding scheme takes advantage of triangular deformation to remove redundancies in the third dimension. A residual image is formed by estimating and compensating for the triangular deformation in the previous slice, and subtracting this from the original slice. The DCT is used to de-correlate the residue signal. DC components are encoded losslessly using DPCM and Huffman codes. Different banks of entropy-constraint scalar quantizers are designed for the AC components. Each AC coefficient is encoded using an appropriate scalar codebook subject to a bit-allocation procedure. The new inter-slice coding scheme is tested on an MR heart sequence. It shows superior results over intra-slice and other inter-slice schemes. The compressed images displayed on the monitor are imperceptible from the original at our lowest bit-rates.

Paper Details

Date Published: 16 September 1994
PDF: 12 pages
Proc. SPIE 2308, Visual Communications and Image Processing '94, (16 September 1994); doi: 10.1117/12.185909
Show Author Affiliations
Nader Mohsenian, Princeton Univ. (United States)
Aria Nosratinia, Univ. of Illinois/Urbana-Champaign (United States)
Bede Liu, Princeton Univ. (United States)
Michael T. Orchard, Univ. of Illinois/Urbana-Champaign (United States)

Published in SPIE Proceedings Vol. 2308:
Visual Communications and Image Processing '94
Aggelos K. Katsaggelos, Editor(s)

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