游程DSGM-SC同步波形壓縮
DSGM-SC graph compression
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摘要: 該文研究了一維局域急變,廣域緩變信號(hào)的游程DSGM-SC同步高效壓縮。該壓縮技術(shù)采用游程差分樣條梯度均值檢測(cè),標(biāo)記信號(hào)的高頻分量,再通過優(yōu)化插值進(jìn)行譜壓縮,提高數(shù)據(jù)序列的整體相關(guān)性,同步壓縮相關(guān)變換后的高低頻數(shù)據(jù)文件,獲得高壓縮效率。記錄高低頻數(shù)據(jù)分段定位信息,實(shí)現(xiàn)無損時(shí)間解壓縮。對(duì)NEC的BSM8300多功能床旁監(jiān)護(hù)儀ECG記錄的壓縮實(shí)驗(yàn)表明,在醫(yī)療特征保真度很高的情況下,壓縮比可達(dá)32.4。此項(xiàng)研究適用于一維數(shù)據(jù)分析,記錄,傳輸和綜合應(yīng)用。
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關(guān)鍵詞:
- 游程編碼; 差分樣條梯度均值; 譜壓縮（SC）; 同步編碼
Abstract: Synchronous run-length DSGM-SC compression technique is presented in this paper for one-dimensional random signal with local fast variation and expansive slow variation. First, run length DSGM detection is implemented to detect fast variation part, then the fast parts spectrum is compressed with interpolation as optimal times principle to improve integrative correlation, and transform coding is adopted to get high compression ratio. Data files, which include high and low spectrum information, are synchronously compressed. Position information is prerecorded to fulfill time recover without distortion. The compression ratio with the method can reach 32.4 to electrocardiogram data recorded by multi-functional bedside instrument of NEC, BSM8300 while the fidelity of medical treatment is high. The research has application in one-dimensional data analyzing, recording, transmitting and integrated service. -
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