-
1.发明申请RAMAN SPECTROSCOPY METHOD OF MEASURING MELAMINE CONTENTS IN DAIRY PRODUCTS HAVING DIFFERENT MATRIXES 有权拉曼光谱法测定具有不同基质的奶制品中的麦芽糖含量公开(公告)号：US20140320855A1
公开(公告)日：2014-10-30
申请号：US14145454
申请日：2013-12-31
Applicant: Tsinghua University , Nuctech Company Limited
Inventor： Zhiqiang CHEN , Li ZHANG , Jianhong ZHANG , Hongqiu WANG , Ziran ZHAO , Jianping GU , Zhiming WANG , Qingping HUANG , Yumin YI
IPC: G01N21/65
CPC classification number: G01N21/65
Abstract: A raman spectroscopy method of measuring melamine contents in dairy products having different matrixes. The method includes: (a) establishing a database of characteristic curves of dairy products having different matrixes; (b) taking several copies of the dairy products having one certain unknown matrix and adding melamine standard solutions having different concentrations therein, to obtain a series of dairy product samples in which the relative concentrations of the melamine are known; (c) performing raman spectrum testing analysis and obtaining corresponding characteristic peak intensities to obtain a slope of the characteristic curve showing variation of the characteristic peak intensities with the relative concentrations of the melamine; (d) searching the database of step (a) using the slope of the characteristic curve of the dairy product samples to find a matching characteristic curve, and (e) calculating concentration of melamine in the dairy products by using the matched characteristic curve and the characteristic peak intensity.
Abstract translation: 测量具有不同基质的乳制品中三聚氰胺含量的拉曼光谱法。 该方法包括：（a）建立具有不同矩阵的乳制品特征曲线数据库; （b）取几份具有一定未知基质的乳制品，并加入其中浓度不同的三聚氰胺标准溶液，以获得其中已知三聚氰胺的相对浓度的一系列乳制品样品; （c）进行拉曼光谱测试分析并获得相应的特征峰强度，以获得特征曲线的斜率，显示特征峰强度与三聚氰胺的相对浓度的变化; （d）使用奶制品样本的特征曲线的斜率来搜索步骤（a）的数据库，以找到匹配的特征曲线，以及（e）通过使用匹配的特征曲线计算乳制品中三聚氰胺的浓度， 特征峰强度。
-
公开(公告)号：US20170024862A1
公开(公告)日：2017-01-26
申请号：US15217613
申请日：2016-07-22
Applicant: Tsinghua University , Nuctech Company Limited
Inventor： Kejun KANG , Zhiqiang CHEN , Yuanjing LI , Li ZHANG , Ziran ZHAO , Yaohong LIU , Jianping GU , Zhiming WANG
CPC classification number: G06T5/003 , G06T7/00 , G06T2207/10116 , G06T2207/20021 , G06T2207/20076 , G06T2207/30168
Abstract: The present disclosure relates to a method and device for estimating a point spread function. In one implementation, a method includes capturing, by a scanning device, an image by scanning a plurality of rectangle blocks which are same sized and closely arranged, wherein the plurality of rectangle blocks are made of different materials and/or have different mass thicknesses, and an incident direction of rays is perpendicular to a scanning direction and a surface of the plurality of rectangle blocks arranged closely during scanning; obtaining line spread functions for two directions along a length side and a width side of each of the rectangle blocks based on the scanned image, and obtaining standard deviation parameters of the line spread functions; and combining the standard deviation parameters for the two directions to obtain a two dimensional Point Spread Function (PSF) parameter so as to estimate the point spread function.
Abstract translation: 本公开涉及一种用于估计点扩散函数的方法和装置。 在一个实现中，一种方法包括通过扫描与尺寸相同并且紧密排列的多个矩形块来扫描图像，其中多个矩形块由不同的材料制成和/或具有不同的质量厚度， 并且光线的入射方向垂直于扫描方向，并且所述多个矩形块的表面在扫描期间被紧密排列; 基于扫描图像，沿矩形块的长度侧和宽度侧的两个方向获得线扩展函数，并获得线扩展函数的标准偏差参数; 并组合两个方向的标准偏差参数以获得二维点扩展函数（PSF）参数，以估计点扩散函数。
-
公开(公告)号：US20170213331A1
公开(公告)日：2017-07-27
申请号：US15409738
申请日：2017-01-19
Applicant: Nuctech Company Limited
Inventor： Zhiqiang CHEN , Yuanjing LI , Li ZHANG , Ziran ZHAO , Yaohong LIU , Jianping GU , Zhiming WANG
CPC classification number: G06T7/0002 , G06K9/6245 , G06K9/6298 , G06K2009/4695 , G06T3/0056 , G06T5/002 , G06T2207/10116 , G06T2207/20021 , G06T2207/20052 , G06T2207/20076 , G06T2207/20081
Abstract: A method of evaluating an image quality for an imaging system and the imaging system are provided. The method may comprise: acquiring an image to be evaluated which is generated by the imaging system; extracting a plurality of sub-images from the image; obtaining a coefficient vector indicating a degree of sparsity by applying a sparse decomposition on the plurality of sub-images based on a pre-set redundant sparse representation dictionary; and performing a linear transformation on the coefficient vector so as to obtain an evaluation value for the image quality. The sparse dictionary is learned by only using a few high quality perspective images, and then the image quality is evaluated based on the sparse degree of the image which is obtained by using the sparse dictionary, thereby achieving a convenient and rapid no-reference image quality evaluation.
-
公开(公告)号：US20150185076A1
公开(公告)日：2015-07-02
申请号：US14577748
申请日：2014-12-19
Applicant: NUCTECH COMPANY LIMITED
Inventor： Ziran ZHAO , Jianhong ZHANG , Hongqiu WANG , Weiwei WANG , Zhiming WANG , Yumin YI
CPC classification number: G01J3/0297 , G01J3/28 , G01J3/44 , G01J2003/4424 , G01N21/65 , G01N2201/06113 , G01N2201/12
Abstract: Embodiments of the present invention provide a Raman spectroscopic inspection method, comprising the steps of: measuring a Raman spectrum of an object to be inspected successively to collect a plurality of Raman spectroscopic signals; superposing the plurality of Raman spectroscopic signals to form a superposition signal; filtering out a florescence interfering signal from the superposition signal; and identifying the object to be inspected on basis of the superposition signal from which the florescence interfering signal has been filtered out. By means of the above method, a desired Raman spectroscopic signal may be acquired by removing the interference caused by a florescence signal from a Raman spectroscopic inspection signal of the object. It may inspect correctly the characteristics of the Raman spectrum of the object so as to identify the object effectively.
Abstract translation: 本发明的实施例提供一种拉曼光谱检查方法，包括以下步骤：连续测量待检测物体的拉曼光谱，以收集多个拉曼光谱信号; 叠加多个拉曼光谱信号以形成叠加信号; 从叠加信号滤除荧光干扰信号; 并且根据已经滤除了荧光干扰信号的重叠信号来识别待检查的对象。 通过上述方法，可以通过从对象的拉曼光谱检查信号中去除由荧光信号引起的干扰来获得所需的拉曼光谱信号。 它可以正确地检查物体的拉曼光谱的特征，以有效地识别物体。
-
-
-
Search Results
4
records
(took 0.012 seconds)
