Nuctech Company Limited

Tsinghua University

Xueguang Cao

Yaohong Liu

Hua Peng

Jianping Gu

Quanwei Song

Jin Ping Lin

Qitian Miao

Yali Xie

Hongsheng Wen

Zhiqiang Chen

Yuanjing Li

Kejun Kang

Shangmin Sun

Haifeng Hu

Chuanxiang Tang

Xuewu Wang

Xianli Ding

Bei He

Hongbo Yang

Pingan Luo

The present invention provides a method and system of material identification using binocular steroscopic and multi-energy transmission image. With the method, any obstacle that dominates the ray absorption can be peeled off from the objects that overlap in the direction of a ray beam. The object that is unobvious due to a relatively small amount of ray absorption will thus stand out, and the material property of the object, such as organic, mixture, metal and the like can be identified. This method lays a fundament for automatic identification of harmful objects, such as explosive, drugs, etc., concealed in a freight container.

Method and system of material identification using binocular steroscopic and multi-energy transmission images

In a binocular steroscopic scanning radiographic imaging method, X-rays emitted by the same radiation source are used. The X-rays pass through a double-slit collimator to form two X-ray beam sectors, which are symmetric or asymmetric and have an angle between them. The X-ray beam sectors, after penetrating through an object under detection, are received by the left and right detector array, respectively, then converted into electric signals to be inputted to the respective image acquisition systems, and received by a computer processing system for image processing and displaying. A system corresponding to the method comprises a radiation source, a beam controller, two mutually connected arms of detector arrays, image acquisition systems connected respectively to each of the detector arrays and a computer processing system. The present invention can display the transmission images detected by each of the detector arrays as well as tomograms with different depth reconstructed from the transmission images according to the principle of parallax. The present invention is convenient, fast in detection and realizes with low cost the recognition of objects of different depths.

Method and system for binocular steroscopic scanning radiographic imaging

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Beijing, China

Xueguang Cao