Slope-a real-time ECG data compressor

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28 引文 斯高帕斯(Scopus)


An ECG sampled at a rate of 250 samples s-1 or more produces a large amount of redundant data that are difficult to store and transmit. In the paper, a real-time ECG data compressor, SLOPE, is presented. SLOPE considers some adjacent samples as a vector, and this vector is extended if the coming sample falls in a fan spanned by this vector and a theshold angle; otherwise, it is delimited as a linear segment. By this means SLOPE repeatedly delimits linear segments of different lengths and different slopes. The Huffman codes for the parameters to describe this linear segment are transmitted for that linear segment. SLOPEa which is a slightly modified version of SLOPE, is used to compress ambulatory ECG data. All the operations used by SLOPE and SLOPEa, are simple integer operations, both SLOPE and SLOPEa being real-time compressors. Experimental results show that an average of 192 bits per channel per second (bpcs) for each ECG signal is obtained by SLOPE and an average of 148 bpcs for each ECG signal is obtained by SLOPE1.

頁(從 - 到)175-179
期刊Medical & Biological Engineering & Computing
出版狀態Published - 1991 三月 1

All Science Journal Classification (ASJC) codes

  • 健康資訊管理
  • 健康資訊學
  • 生物醫學工程
  • 電腦科學應用
  • 計算機理論與數學


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