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標題Title: Scan-Along Polygonal Approximation for Data Compression of Electrocardiograms
作者Authors: 莊明嘉
上傳單位Department: 資訊工程系
上傳時間Date: 2009-10-27
上傳者Author: 莊明嘉
審核單位Department: 資訊工程系
審核老師Teacher: 陳福坤
檔案類型Categories: 課堂報告In-class Report
關鍵詞Keyword: Data Compression,Electrocardiograms,SAPA2
摘要Abstract: Three fast and efficient "scan-along" algorithms for compressing digitized electrocardiographic data are described. These algorithms are "scan-along" in the sense that they produce the compressed data in real time as the electrocardiogram is generated. The algorithms are based on the minimum perimeter polygonal approximation for digitized curves. The approximation restricts the maximum error to be no greater than a specified value. Our algorithms achieve a compression ratio of ten on a database of 8000 5-beat abnormal electrocardiograms sampled at 250 Hz and a compression ratio of eleven on a database of 600 3-beat normal electrocardiograms (different from the preceding database) sampled at 500 Hz.

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2009_10_5fd8451d.pdf 490Kb pdf 1017 226
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