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公开(公告)号：US20150185153A1
公开(公告)日：2015-07-02
申请号：US14575381
申请日：2014-12-18
发明人： Li Zhang , Li Jiang , Jianhong Zhang , Hongqiu Wang , Yumin Yi
IPC分类号： G01N21/65
CPC分类号： G01N21/65 , G01N21/658
摘要： Embodiments of the present invention disclose a pesticide residue detection method, comprising the steps: (a) irradiating a sample to be detected by an exciting light and collecting a Raman scattered light from the sample; (b) acquiring a Raman spectrum of the sample from the collected Raman scattered light; and (c) comparing the Raman spectrum with reference Raman spectra for known pesticides in a reference Raman library to determine composition and concentration of the pesticide residue in the sample. The method may achieve effective, convenient and accurate inspection of the pesticide residue in foods, in particular suitable for rapid detection.
摘要翻译： 本发明的实施方式公开了农药残留检测方法，其特征在于，包括以下步骤：（a）用激发光照射被检测体，从所述样品收集拉曼散射光; （b）从所收集的拉曼散射光中获取样品的拉曼光谱; 和（c）将参考拉曼文库中的已知农药的拉曼光谱与参考拉曼光谱进行比较，以确定样品中农药残留的组成和浓度。 该方法可以有效，方便，准确地检测食品中的农药残留，特别适合快速检测。
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公开(公告)号：US09020279B2
公开(公告)日：2015-04-28
申请号：US14146263
申请日：2014-01-02
发明人： Li Zhang , Zhiqiang Chen , Jia Hao
CPC分类号： G06K9/6202 , G06T5/50 , G06T2211/408
摘要： Provided are image processing method and apparatus. The method includes selecting one of a plurality of images matched in structure as reference image, and select another of the images as subject image; for a subject pixel in the subject image, determining a pixel corresponding to the subject pixel in the reference image; calculating similarity values of at least part of pixels in the reference image with respect to the pixel corresponding to the subject pixel; establishing weight coefficients based on the similarity values, and weighted averaging the subject pixel in the subject image to obtain a processed pixel value. With the above solutions, it is possible to use structure information of a higher-quality image in processing another image, and thus improve quality of the other image.
摘要翻译： 提供图像处理方法和装置。 该方法包括选择结构中匹配的多个图像中的一个作为参考图像，并且选择另一个图像作为被摄体图像; 对于所述被摄体图像中的被摄体像素，确定与所述参考图像中的所述被摄体像素相对应的像素; 计算参考图像中与像素对应的像素的至少部分像素的相似度值; 基于相似度值建立权重系数，并对被摄体图像中的被摄体像素进行加权平均以获得经处理的像素值。 利用上述解决方案，可以在处理另一图像时使用较高质量图像的结构信息，从而提高其他图像的质量。
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公开(公告)号：US20140211917A1
公开(公告)日：2014-07-31
申请号：US14129655
申请日：2012-12-31
发明人： Zhiqiang Chen , Li Zhang , Ziran Zhao , Yuxiang Xing , Jia Hao , Liang Li
IPC分类号： G01V5/00
CPC分类号： G01V5/0016 , A61B6/032 , A61B6/4007 , A61B6/4014 , A61B6/4078 , A61B6/4233 , A61B6/4275 , G01N23/046 , G01T1/2985 , G01V5/005
摘要： The present invention discloses apparatus and method for ray scanning imaging. The apparatus comprises a plurality of ray generators and a ray detection device. The plurality of ray generators are arranged uniformly along a circular arc and emit ray beams in sequence or simultaneously to an object to be inspected within a single scanning period. The ray detection device may be either in a multi-segmental semi-closed configuration composed of a plurality of linear arrays of ray detectors or in a circular arc configuration where a plurality of ray detection units arranged uniformly along a circular arc. During the inspection, the apparatus is advantageous in obtaining the complete ray projection values without rotation thereof, so as to effectively shorten the inspection time.
摘要翻译： 本发明公开了一种用于射线扫描成像的装置和方法。 该装置包括多个射线发生器和射线检测装置。 多个射线发生器沿着圆弧均匀地布置，并且在单个扫描周期内依次发射射线束或同时发射到被检查物体。 射线检测装置可以是由多个线状阵列的射线检测器组成的多段半封闭构造，也可以是多个沿着圆弧均匀排列的射线检测单元的圆弧结构。 在检查期间，该装置有利于获得完整的射线投影值而不旋转，以便有效地缩短检查时间。
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公开(公告)号：US11925183B2
公开(公告)日：2024-03-12
申请号：US17661257
申请日：2022-04-28
发明人： Zhiqiang Chen , Li Zhang , Qingping Huang , Yong Zhou , Hui Ding , Chao Ji
IPC分类号： G01N23/046 , A22B5/00 , G01N23/083 , G01N23/18 , G01N33/12
CPC分类号： A22B5/007 , G01N23/046 , G01N23/083 , G01N23/18 , G01N33/12 , G01N2223/1016 , G01N2223/204 , G01N2223/30 , G01N2223/3307 , G01N2223/3308 , G01N2223/419 , G01N2223/5015 , G01N2223/618 , G01N2223/643
摘要： The present disclosure relates to a static CT detection device, including: a shielding body, formed with a detection channel through which an object under detection can pass; a ray source, emitting rays for detecting the object under detection when the object under detection passes through the detection channel; and a detector, for acquiring the rays emitted by the ray source and having passed through the detection channel, wherein the shielding body is formed with an opening portion, and the opening portion extends from an inlet of the detection channel to an outlet of the detection channel.
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公开(公告)号：US10935691B2
公开(公告)日：2021-03-02
申请号：US16234625
申请日：2018-12-28
发明人： Kejun Kang , Jianmin Li , Xiulin Ni , Yulan Li , Yuanjing Li , Zhiqiang Chen , Li Zhang , Liang Li , Xiang Zou , Weifeng Yu , Hejun Zhou , Chunguang Zong
IPC分类号： G01V5/00 , G01N23/046
摘要： The present disclosure relates to the technical field of CT detection, and in particular to a CT inspection system and a CT imaging method. The CT inspection system provided by the present disclosure comprises a radioactive source device, a detection device, a rotation monitoring device and an imaging device, wherein the detection device obtains detection data at a frequency that is N times a beam emitting frequency of the radioactive source device; the rotation monitoring device detects a rotation angle of the detection device and transmits a signal to the imaging device each time the detection device rotates by a preset angle; the imaging device determines a rotational position of the detection device each time the radioactive source device emits a beam according to the signal transmitted by the rotation monitoring device and the detection data of the detection device.
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公开(公告)号：US10769821B2
公开(公告)日：2020-09-08
申请号：US16045383
申请日：2018-07-25
发明人： Yuxiang Xing , Li Zhang , Jianmin Li , Zhiqiang Chen , Jianping Gu
摘要： A method and device for reconstructing a CT image and a storage medium are disclosed. CT scanning is performed on an object to be inspected to obtain projection data on a first scale. Projection data on a plurality of other scales is generated from the projection data on the first scale. Projection data on each scale is processed on the corresponding scale by using a first convolutional neural network to obtain processed projection data, and a back-projection operation is performed on the processed projection data to obtain a CT image on the corresponding scale. CT images on the plurality of scales are fused to obtain a reconstructed image of the object to be inspected.
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公开(公告)号：US10739282B2
公开(公告)日：2020-08-11
申请号：US16168850
申请日：2018-10-24
发明人： Zhiqiang Chen , Li Zhang , Mingzhi Hong , Yong Zhou , Yihong Liu
摘要： A device comprises: at least two lead curtains; a supporting assembly comprising a working area and a standby area; a first transmission assembly to drive the lead curtains to move in a conveying channel; and a second transmission assembly to transfer the lead curtains between the standby area and the working area, wherein the second transmission assembly transfers the lead curtains from the standby area to the working area, so that the lead curtains fall into a starting point of the conveying channel and are located behind an article to be detected; the first transmission assembly drives the lead curtains to move with the article to be detected in front and drive the lead curtains to move from the starting point of the working area to a starting point of the standby area; and the second transmission assembly drives the lead curtains to enter and move in the standby area.
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公开(公告)号：US10436932B2
公开(公告)日：2019-10-08
申请号：US15279207
申请日：2016-09-28
发明人： Qitian Miao , Zhiqiang Chen , Li Zhang , Yunda Sun , Ming Huang , Qingping Huang , Ming Hu , Lei Lei , Jie Xia
IPC分类号： G01N23/046 , G01V5/00
摘要： The present disclosure discloses an inspection system for quarantine and a method thereof. The CT technology is applied to the field of quarantine supervision, overcoming a problem of objects in an image of a single-view or a multi-view X-ray machine being overlapped, as well as a problem of organics including contrabands in a conventional CT image being not highlighted, not elaborated, and having bad contrast. Accuracy and efficiency of inspecting an object by human operator for quarantine inspection can be considerably improved, which is of a high application value.
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公开(公告)号：US20190192090A1
公开(公告)日：2019-06-27
申请号：US16232072
申请日：2018-12-26
发明人： Liang Li , Zhiqiang Chen , Kejun Kang , Ziran Zhao , Li Zhang , Yuxiang Xing , Tiao Zhao , Jianmin Li , Bicheng Liu , Qian Yi
摘要： The present disclosure provides a decomposition method based on basis material combination. In the present disclosure, a scanned object is divided into a plurality of regions, the basis material combinations used in each of the divided regions are different each other, and the scanned object is re-divided according to the re-determined equivalent atomic number of its each point until the change on decomposition coefficient meets certain conditions. Thereby, a decomposition method based on dynamic basis material combinations is realized, which reduces a decomposition error caused by improper selection of the basis material combination and improves the accuracy of the decomposition and substance identification of the multi-energy CT.
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公开(公告)号：US10295481B2
公开(公告)日：2019-05-21
申请号：US15262894
申请日：2016-09-12
发明人： Zhiqiang Chen , Li Zhang , Tianyi Yang Dai , Ji Zhao , Xin Jin , Ming Chang
IPC分类号： G01N23/20 , G01N23/00 , G01N23/046 , G01N23/083 , G01N23/207 , G21K1/02 , G01V5/00
摘要： The present disclosure relates to detection systems and methods. One illustrative detection system may include a distributed radiation source having a plurality of radiation source focus points, which irradiate an object under detection, wherein the plurality of radiation source focus points are divided into a certain number of groups, and a primary collimator that limits rays of each of the radiation source focus points such that the rays emit into an XRD detection device. An XRD detection device may include a plurality of XRD detectors that are divided into the same number of groups as the radiation source focus points, wherein XRD detectors in a same group are arranged to be separated by XRD detectors in other groups, and rays of each of the radiation source focus points are received by XRD detectors having the same group number as the group number of the radiation source focus point.
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