物质识别方法和设备
    326.
    发明申请

    公开(公告)号:WO2009070977A1

    公开(公告)日:2009-06-11

    申请号:PCT/CN2008/001880

    申请日:2008-11-14

    CPC classification number: G01N23/04 G01N23/087 G01N2223/423

    Abstract: A method of material identification is disclosed. The method comprised the following step: transmission a detected material using a high-energy radiation and a low-energy radiation to acquire a high-energy transmission imaging and a low-energy transmission imaging. Each of pixels values in the high-energy imaging express a high-energy diaphaneity of the high-energy radiation for a corresponding portion of the detected material. And each of pixels values in the low-energy imaging expresses a low-energy diaphaneity of the low-energy radiation for a corresponding portion of the detected material. Calculating a first function value of the high-energy diaphaneity and a second function value of the high-energy diaphaneity and the low-energy diaphaneity for every pixels. And classifying on the basic of the location determined by the first function value and the second function value through using a classification curve beforehand established, to identify the type of material corresponding with each of pixels in the detected material. A device of material identification comprised an imaging device, a calculating device and a classifying device.

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