公开(公告)号：KR101273746B1

公开(公告)日：2013-06-12

申请号：KR1020120030525

申请日：2012-03-26

Applicant: 전북대학교산학협력단

Inventor： 천선일 ,  양상훈 ,  박동선 ,  이재환

IPC: G01N23/223

CPC classification number: G01N23/223 ,  G01N23/2076 ,  G01N2223/0563 ,  G01N2223/076 ,  G01N2223/406

Abstract: PURPOSE: A filtering method for removing the noise of a fluorescence X-ray spectrum is provided to analyze noise properties and to regulate the size of a filter window of a fluorescence X-ray detecting device or a threshold amount according to the analyzed noise properties, thereby improving the accuracy of analyzing the fluorescence X-ray spectrum. CONSTITUTION: A filtering method for removing the noise of a fluorescence X-ray spectrum is as follows. A fluorescence X-ray detector irradiates X-rays to a reference sample for analyzing noise properties of the fluorescence X-ray spectrum, sorts the fluorescence X-ray energy generated from the sample for a predetermined period into a plurality of channels according to an energy level for a predetermined period, and counts the sorted channels, thereby obtaining the fluorescence X-ray spectrum. A standard deviation value of the count numbers of each channel is calculated. A filter for removing noise from the fluorescence X-ray spectrum is selected. At least one between the sizes of a filter window or threshold amount with respect to each of the channel is regulated according to the standard deviation value of the count numbers of each channel. The noise is filtered from the fluorescence X-ray spectrum according to the regulated size of a filter window or threshold amount.

Abstract translation: 目的：提供一种去除荧光X射线光谱噪声的滤波方法，根据分析的噪声特性分析噪声特性和调节荧光X射线检测装置的滤光器窗口的大小或阈值， 从而提高分析荧光X射线光谱的准确性。 构成：用于去除荧光X射线光谱噪声的滤波方法如下。 荧光X射线检测器将X射线照射到用于分析荧光X射线光谱的噪声特性的参考样品，根据能量对从样品产生的预定时间段的荧光X射线能量进行分解成多个通道 电平达预定时间，并对排序的通道进行计数，从而获得荧光X射线光谱。 计算每个通道的计数值的标准偏差值。 选择用于从荧光X射线光谱去除噪声的滤光器。 根据每个通道的计数号的标准偏差值，调整滤波器窗口的大小或相对于每个信道的阈值之间的至少一个。 根据滤波器窗口的调节尺寸或阈值量，从荧光X射线光谱中滤除噪声。

公开(公告)号：KR101273714B1

公开(公告)日：2013-06-12

申请号：KR1020120030524

申请日：2012-03-26

Applicant: 전북대학교산학협력단

Inventor： 천선일 ,  양상훈 ,  박동선 ,  이재환

IPC: G01N23/223

CPC classification number: G01N23/223 ,  G01N23/2076 ,  G01N2223/076 ,  G01N2223/406

Abstract: PURPOSE: A method for analyzing noise properties of a fluorescence X-ray spectrum is provided to improve the accuracy of an analysis of the fluorescence X-ray spectrum by analyzing noise properties. CONSTITUTION: A method for analyzing noise properties of a fluorescence X-ray spectrum is as follows. A fluorescence X-ray detector irradiates X-rays to a reference sample in which preset substances are mixed at a preset rate for analyzing noise properties of the fluorescence X-ray spectrum, sorts the fluorescence X-ray energy generated from the sample for a predetermined period into a plurality of channels according to an energy level for a predetermined period, and counts the sorted channels. The process obtaining the fluorescence X-ray spectrum is repeated several times. The number that the fluorescence X-ray energy with respect to each of the channels is actually counted is substituted to a Poisson distribution function so that the probability that an expected count number is observed for the predetermined period is calculated. The standard deviation of the count number is calculated.

Abstract translation: 目的：提供一种分析荧光X射线光谱的噪声特性的方法，通过分析噪声特性来提高荧光X射线光谱分析的准确性。 构成：分析荧光X射线光谱的噪声特性的方法如下。 荧光X射线检测器将X射线照射到参考样品，其中预设物质以预设的速率混合以分析荧光X射线光谱的噪声性质，将从样品产生的荧光X射线能量分类为预定的 在预定时间段内根据能级进入多个信道，并对排序的频道进行计数。 获得荧光X射线光谱的过程重复几次。 实际计数相对于每个通道的荧光X射线能量的数量被替换为泊松分布函数，从而计算在预定时间段内观察到预期计数数的概率。 计算计数的标准偏差。

公开(公告)号：KR1020100098160A

公开(公告)日：2010-09-06

申请号：KR1020090017188

申请日：2009-02-27

Applicant: 전북대학교산학협력단 ,  주식회사 헤드아이티

Inventor： 박동선 ,  라정진 ,  양상훈 ,  안우찬

IPC: H04N7/24

CPC classification number: H04N19/34 ,  H04N19/184

Abstract: PURPOSE: A method for processing a BPC of JPEG2000 is provided to reduce a processing time of the BPS which occupies a lot of parts of a compression time while maintaining the compression performance of image intactly. CONSTITUTION: A frame which is a compression object is divided into a plurality of code blocks having a continuous plurality of coding passes. In process of encoding all of coding passes by turns in each code block, context of each bit is extracted. Among encoding process, many state information is calculated/updated. A context of each bit is extracted in a same time and period from an upper bit plane to lower bit plane.

Abstract translation: 目的：提供一种处理JPEG2000的BPC的方法，以减少占用大量压缩时间部分的BPS的处理时间，同时保持图像的压缩性能。 构成：作为压缩对象的帧被划分为具有连续的多个编码遍的多个码块。 在每个代码块中编码所有编码遍的过程中，提取每个位的上下文。 在编码过程中，许多状态信息被计算/更新。 在从高位平面到低位平面的相同时间和周期中提取每个位的上下文。

公开(公告)号：KR101440237B1

公开(公告)日：2014-09-12

申请号：KR1020130070761

申请日：2013-06-20

Applicant: 전북대학교산학협력단 ,  목포대학교산학협력단

Inventor： 양상훈 ,  유혁민 ,  박동선 ,  윤숙 ,  박정권

IPC: G01N23/223

CPC classification number: G01N23/223 ,  G01N23/2076 ,  G01N2223/076 ,  G01N2223/313 ,  G01T1/36 ,  G06F17/17

Abstract: The present invention relates to a method to divide spectrum sections to apply an interval threshold method even to XRF spectrum data with random properties by dividing the sections of the XRF spectrum using peak size characteristics, and to a method to analyze X-ray fluorescence using the same. The method to divide spectrum sections comprises: a step of reducing spectrum data through down sampling and then differentiating the reduced signal; a step of creating a cumulative graph by accumulating the differentiation results of the reduced signal; a step of detecting section division points using a gradient of the cumulative graph and the gradient rate; and a step of dividing the spectrum data into sections based on the section division points.

Abstract translation: 本发明涉及通过使用峰值特性划分XRF频谱的各部分来分割频谱部分以应用间隔阈值法甚至具有随机特性的XRF频谱数据的方法，以及使用该方法来分析X射线荧光 相同。 分割频谱部分的方法包括：通过下采样减少频谱数据，然后对减小的信号进行微分的步骤; 通过累加减小的信号的微分结果来产生累积图的步骤; 使用累积图的梯度和梯度率来检测区间分割点的步骤; 以及基于部分分割点将频谱数据划分为多个部分的步骤。

公开(公告)号：KR1020120115729A

公开(公告)日：2012-10-19

申请号：KR1020110033210

申请日：2011-04-11

Applicant: 전북대학교산학협력단 ,  주식회사 아이에스피

Inventor： 천선일 ,  양상훈 ,  박동선 ,  박정권

IPC: G06F19/00 ,  G01T1/36

CPC classification number: G08C25/00

Abstract: PURPOSE: A preprocessing method for minimizing an abnormal value influence of spectrum data is provided to supply a result similar to an original signal by reducing an abnormal value found in a spectrum or other signals and performing preprocessing at a low calculation cost. CONSTITUTION: A difference value between a model and a target signal is obtained by selecting a model for the target signal. A noise and an abnormal value getting out of a predetermined range are removed by applying a median filter to the difference value. A preprocessed signal is restored by combining the processed signal with the model. A preprocessing result is obtained by applying smooth algorithm to the restored signal. [Reference numerals] (1) Obtaining a model of a target signal; (2) Applying a median filter to a difference between the model and the target signal; (3) Applying smooth algorithm by adding the filter applied value and the model

Abstract translation: 目的：提供一种用于最小化频谱数据的异常值影响的预处理方法，通过减少频谱或其他信号中发现的异常值并以低的计算成本执行预处理，来提供与原始信号相似的结果。 构成：通过选择目标信号的模型，获得模型和目标信号之间的差值。 通过对该差分值应用中值滤波器来消除噪声和超出预定范围的异常值。 通过将处理的信号与模型组合来恢复预处理信号。 通过对恢复的信号应用平滑算法获得预处理结果。 （附图标记）（1）获取目标信号的模型; （2）将中值滤波器应用于模型与目标信号之间的差异; （3）通过添加滤波器应用值和模型应用平滑算法

公开(公告)号：KR101440236B1

公开(公告)日：2014-09-12

申请号：KR1020130067847

申请日：2013-06-13

Applicant: 전북대학교산학협력단 ,  목포대학교산학협력단

Inventor： 양상훈 ,  유혁민 ,  박동선 ,  윤숙 ,  박정권

IPC: G01N23/223

CPC classification number: G01N23/223 ,  G01N23/04 ,  G01N23/2076 ,  G01N2223/076 ,  G01N2223/304 ,  G01N2223/313 ,  G01R23/167

Abstract: The present invention relates to a method to analyze X-ray fluorescence and a method to remove backgrounds for the same, which accurately and efficiently removes backgrounds included in a spectrum for X-ray fluorescence analysis. A method to divide spectrum sections comprises: a step of creating a cumulative graph by performing multi-resolution analysis on spectrum data, and by collecting and accumulating differences of the analysis results; a step of detecting section division points by considering a gradient of the cumulative graph and the gradient rate; a step of dividing the spectrum data into sections based on the section division points; a step of firstly removing the backgrounds included in the spectrum data by classifying sections, where symbols of the differences of the analysis results are crossed and changes into a peak area, and the remaining sections into a background area; and a step of estimating the remaining background in the peak area and secondly removing backgrounds by fitting a beginning point and an end point of the peak area through a linear function or an exponential function.

Abstract translation: 本发明涉及一种分析X射线荧光的方法和一种去除其背景的方法，其精确有效地去除了包括在X射线荧光分析的光谱中的背景。 分割频谱部分的方法包括：通过对频谱数据进行多分辨率分析，并通过收集和累积分析结果的差异来创建累积图的步骤; 通过考虑累积图的梯度和梯度率来检测区间分割点的步骤; 基于区段分割点将频谱数据划分为多个部分的步骤; 首先通过分类部分去除包括在频谱数据中的背景的步骤，其中分析结果的差异的符号被越过并变成峰值区域，其余部分进入背景区域; 以及通过线性函数或指数函数拟合峰值区域的起点和终点来估计峰值区域中的剩余背景并且其次去除背景的步骤。