Investigates the encoding of magnetic resonance (MR) images of the human brain using various lossless techniques and presents a new form of spiral encoding. The algorithm used relies partially on the overall shape of the bounding contour of the image in achieving the compression and uses a traditional run-based technique to generate a set of tuples for a complete image. Comparisons are made between the feature-directed spiral encoding and the traditional paths; they include the scanning pattern associated with the normal raster scanned display and the path for a display that could be used in following a linearised quadtree encoding. The new method tracks the 'greater' contour of the overall image and once this path has been established and tuples recorded, then the inner contours are generated. From the one greater contour each of the inner contours, with a reducing radius towards the centre, can be created. The results for various techniques in terms of the number of bytes required to store the image are given. The new spiralling method achieves an average compression ratio of 1.49 for the set of MR images.<>


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    MR image compression by spiral coding


    Contributors:


    Publication date :

    1994-01-01


    Size :

    452321 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    MR Image Compression by Spiral Coding

    Millar, R. J. / Nicholl, P. N. / IEEE; Signal Processing Society | British Library Conference Proceedings | 1994


    Spiral Coding Order of Macroblocks with Applications to SNR-Scalable Video Compression

    Baszak, G. / Domanski, M. | British Library Conference Proceedings | 2005



    Lossless Coding for Satellite Image Data Compression

    Trinadh, P. / Rajangam, R. K. / Seshaiah, R. et al. | British Library Online Contents | 1996


    Check image compression using a layered coding method

    Huang, J. / Wang, Y. / Wong, E. K. | British Library Online Contents | 1998