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首页> 外文期刊>American journal of applied sciences >Bio-Potential Signal Extraction from Multi-Channel Paper Recorded Charts
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Bio-Potential Signal Extraction from Multi-Channel Paper Recorded Charts

机译：从多通道纸质记录图中提取生物电势信号

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Problem statement: Almost all ot the modern biomedical equipments that record the biopotential actions have digital output but the paper chart records are a must. The volume of these records is significant and increasing rapidly. Keeping a bio-signal chart of a patient make it easy for quick assessment but still create problems in the essence of data storage, archiving , data interchange and communications. Approach: A solution to all these problems is to convert these paper records to digital form. In this study, a method for bio-potential signal extraction from single or multi-channel paper recorded charts using image processing techniques is developed. Results: After scanning the paper charts and converting them into images using a commercial scanner, the developed algorithm applied to eliminate the background of the scanned paper chart from any recording device single channel or multi-channel using binary neighborhood morphological operations then converting the extracted waveform image into quantized values representing the waveform recorded paper chart. The extracted signal then filtered to remove the high frequency effects that result from the morphological operations. A correlation and frequency analysis procedure then conducted to verify the result against known sampled waveform. Conclusion: A chart paper conversion to digital values that represent only the values for the biopotential waveform and eliminating the other irrelevant information has been achieved. These resulted in a less space occupation of patient records and make it easy for data further processing and manipulations.
机译：问题陈述：几乎所有记录生物势作用的现代生物医学设备都有数字输出，但纸质海图记录是必须的。这些记录的数量是巨大的并且正在迅速增加。保留患者的生物信号图可以轻松进行快速评估，但仍然在数据存储，存档，数据交换和通讯的本质上造成问题。方法：解决所有这些问题的方法是将这些纸质记录转换为数字形式。在这项研究中，开发了一种使用图像处理技术从单通道或多通道纸质记录图中提取生物电势信号的方法。结果：在扫描纸质海图并将其使用商用扫描仪将其转换为图像后，开发的算法适用于使用二进制邻域形态学运算从任何记录设备的单通道或多通道中消除扫描的纸质海图的背景，然后转换提取的波形图像转换成代表波形记录纸质图表的量化值。然后对提取的信号进行滤波，以消除由形态运算产生的高频效应。然后进行相关和频率分析程序，以根据已知的采样波形验证结果。结论：已经完成了图表纸到数字值的转换，这些数字值仅表示生物电势波形的值，并消除了其他不相关的信息。这减少了患者记录的空间占用，并使数据进一步处理和操纵变得容易。

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