Title :
Optimized frame design for a matching pursuit based compression scheme
Author :
Engan, Kjersti ; Husoy, John Hakon ; Aase, Sven Ole
Author_Institution :
Dept. of Electr. & Comput. Eng., Hogskolen i Stavanger, Stavanger, Norway
Abstract :
A technique for designing frames to use with vector selection algorithms, for example Matching Pursuits (MP), is presented along with a novel compression scheme using these optimized frames. The frame design algorithm is iterative and requires a training set. We apply the frame design algorithm and the complete multi-frame compression scheme to electrocardiogram (ECG) signals. Complete coding experiments using the optimized frames in the novel compression scheme are compared with coding experiments from transform based compression schemes like the Discrete Cosine Transform (DCT) with run-length entropy coding. The experiments demonstrate improved rate-distortion performance for the multi-frame compression scheme compared to DCT at low bit-rates.
Keywords :
discrete cosine transforms; electrocardiography; entropy codes; iterative methods; discrete cosine transform; electrocardiogram signals; frame design algorithm; matching pursuit based compression scheme; run-length entropy coding; transform based compression schemes; vector selection algorithms; Algorithm design and analysis; Approximation methods; Bit rate; Entropy; Matching pursuit algorithms; Training; Transforms;
Conference_Titel :
Signal Processing Conference (EUSIPCO 1998), 9th European
Conference_Location :
Rhodes
Print_ISBN :
978-960-7620-06-4