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《Journal of Chengdu University of Technology(Science & Technology Edition)》 2010-05
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Delineation of abnormal areas by using the polynomial derivative method

JIANG Kai-ming,GU Ming,GE Liang-quan College of Applied Nuclear Technology and Automation Engineering,Chengdu University of Technology,Chengdu 610059,China  
In dealing with the process of exploration data,the focus is to discover and identify the abnormal areas of data,while the abnormal area boundary should be the border composed the points of maximum amplitude variation.Micro Commercial uses the binary polynomial derivative method to find all the peaks,judges the steep degree and peak amplitude of the abnormal data peak,comprehensively,and thus delineates the abnormal peak,then,extracts the edge of the peak reflecting the characteristic change to delineate the abnormal area.The paper derives and analyses the algorithm of the peak in theory,and gives the processing steps to delineate abnormal areas.The actual data processing results show that the method is effective and accurate.The abnormal area delineated by using this method is smaller than that delineated by the standard deviation and isoline methods,characterizing the true anomalous boundary.
【Fund】: 国家自然科学基金资助项目(40774063)
【CateGory Index】: P631
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