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1.发明授权Radiation image processing apparatus, determination apparatus, and radiation image read-out apparatus 失效辐射图像处理装置，确定装置和放射线图像读出装置
公开(公告)号：US5157733A
公开(公告)日：1992-10-20
申请号：US712214
申请日：1991-06-07
申请人： Hideya Takeo , Kazuhiro Hishinuma , Kazuo Shimura , Nobuyoshi Nakajima , Shoji Hara , Hiroshi Tanaka , Takefumi Nagata
发明人： Hideya Takeo , Kazuhiro Hishinuma , Kazuo Shimura , Nobuyoshi Nakajima , Shoji Hara , Hiroshi Tanaka , Takefumi Nagata
IPC分类号： G06T7/00
CPC分类号： G06T7/004 , G06T7/00 , G06T2207/30004 , Y10S128/925
摘要： In a radiation image processing apparatus, signal processing for determining the shape and location of an irradiation field, adjusting read-out conditions for a final readout from a preliminary read-out image signal, adjusting image processing conditions, and/or detecting an abnormal pattern is carried out on an image signal representing a radiation image by using a neural network. After the neural network, the learning operations of which have been carried out, is incorporated into the radiation image processing apparatus, modifying information is entered from an input device into the neural network. The modifying information is used to modify the signal processing carried out by the neural network and thereby to carry out re-learning operations of the neural network.
摘要翻译： 在放射线图像处理装置中，用于确定照射场的形状和位置的信号处理，从初步读出图像信号调整用于最终读出的读出条件，调整图像处理条件和/或检测异常模式 通过使用神经网络对表示放射线图像的图像信号进行。 在已经进行了学习操作的神经网络被并入放射线图像处理装置之后，将修改信息从输入装置输入到神经网络中。 修改信息用于修改由神经网络执行的信号处理，从而执行神经网络的重新学习操作。
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2.发明授权Abnormnal pattern detecting or judging apparatus, circular pattern judging apparatus, and image finding apparatus 失效异常模式检测或判断装置，圆形图案判断装置和图像查找装置
公开(公告)号：US5850465A
公开(公告)日：1998-12-15
申请号：US751449
申请日：1991-08-28
申请人： Kazuo Shimura , Yuuma Adachi , Shoji Hara , Nobuyoshi Nakajima , Wataru Ito
发明人： Kazuo Shimura , Yuuma Adachi , Shoji Hara , Nobuyoshi Nakajima , Wataru Ito
IPC分类号： G06K9/46 , G06T5/00 , G06T7/00 , G06F159/00
CPC分类号： G06T7/0081 , G06K9/4604 , G06T7/0012 , G06T7/0097 , G06T2207/10116 , G06T2207/20068 , G06T2207/20084 , G06T2207/20224 , G06T2207/30061 , G06T2207/30096 , Y10S128/92
摘要： An abnormal pattern detecting apparatus comprises a device for finding prospective abnormal patterns in a radiation image of an object from an image signal representing the radiation image, and a device for finding anatomical information about the object from the image signal. From the image signal components of the image signal, which represent the image information at positions in the vicinity of each prospective abnormal pattern, a characteristic measure calculating device calculates a plurality of characteristic measures for each prospective abnormal pattern. An abnormal pattern finding device utilizes the characteristic measures and the anatomical information in order to find a true abnormal pattern from the prospective abnormal patterns.
摘要翻译： 异常模式检测装置包括从表示放射线图像的图像信号中发现物体的放射线图像中的预期异常模式的装置，以及用于从图像信号中找到关于对象的解剖信息的装置。 特征测量计算装置根据每个预期异常模式附近的位置处的图像信息的图像信号的图像信号分量来计算每个预期异常模式的多个特征量度。 异常模式发现装置利用特征性措施和解剖信息，从预期的异常模式中找到真正的异常模式。
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3.发明授权
公开(公告)号：US4710875A
公开(公告)日：1987-12-01
申请号：US477571
申请日：1983-03-21
CPC分类号： G01T1/2014 , G01T1/2012
摘要： Markers for providing reference points or lines are recorded together with radiation images on stimulable phosphor sheets in a position fixed with respect to the radiation images. The stimulable phosphor sheets are scanned with stimulating rays, and the spatial coordinates of reference points or lines are detected from digital data of the images detected from light emitted from the stimulable phosphor sheets. Rotation and shift among the radiation images are calculated based on the reference points or lines. One of the radiation images is rotated on the digital data when positional deviation exists and moved on the digital data when positional deviation exists. Subtraction of the image data is then conducted among the corresponding picture elements of the radiation images to extract an image of a specific portion of the radiation images.
摘要翻译： 用于提供参考点或线的标记与辐射图像一起被记录在相对于辐射图像固定的位置的可刺激的磷光体片上。 用刺激光线扫描可刺激的磷光体片，并且从从可刺激的磷光体片发射的光检测的图像的数字数据中检测参考点或线的空间坐标。 基于参考点或线来计算辐射图像之间的旋转和移位。 当位置偏差存在时，辐射图像中的一个在数字数据上旋转，并且当存在位置偏差时在数字数据上移动。 然后在放射线图像的相应图像元素之间进行图像数据的减法，以提取辐射图像的特定部分的图像。
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公开(公告)号：US5006708A
公开(公告)日：1991-04-09
申请号：US407823
申请日：1989-09-15
申请人： Wataru Itoh , Nobuyoshi Nakajima , Takefumi Nagata
发明人： Wataru Itoh , Nobuyoshi Nakajima , Takefumi Nagata
CPC分类号： H04N1/409
摘要： A radiation image which has been recorded on a recording medium is read out at predetermined sampling intervals in order to obtain an image signal. A method for generating a radiation image signal comprises the steps of, in the course of the radiation image being read out, first applying sampling intervals corresponding to a second spatial frequency fsw higher than a first spatial frequency fss, which is the maximum of a desired spatial frequency range, along at least one direction on the recording medium in order to obtain an original image signal. The original image signal is then subjected to filtering processing in order to transmit spatial frequency components below the first spatial frequency fss, and to reduce or eliminate spatial frequency components above the first spatial frequency fss. Lastly, the original image signal which has been obtained from the filtering processing is sampled at sampling intervals corresponding to the first spatial frequency fss in order to obtain an image signal.
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公开(公告)号：US5714764A
公开(公告)日：1998-02-03
申请号：US730024
申请日：1996-10-11
申请人： Hideya Takeo , Nobuyoshi Nakajima
发明人： Hideya Takeo , Nobuyoshi Nakajima
CPC分类号： G01N23/043
摘要： A stimulable phosphor sheet, on which a radiation image of an object has been stored, is exposed to stimulating rays, which cause the stimulable phosphor sheet to emit light in proportion to the amount of energy stored thereon during its exposure to radiation. The emitted light is detected by a photoelectric read-out device, and an image signal representing the radiation image is thereby obtained. Threshold value processing is carried out in accordance with the obtained image signal, and a prospective abnormal pattern is thereby detected from the radiation image. A predetermined threshold value, which is used in the threshold value processing for detecting the prospective abnormal pattern, is set to be a small value as the amount of change in the image signal corresponding to the region in the vicinity of the prospective abnormal pattern becomes large.
摘要翻译： 在其上已经存储有物体的放射线图像的可刺激的荧光体片材暴露于刺激光线，这使得可刺激的荧光体片材在其暴露于辐射期间与其上存储的能量的量成比例地发光。 由光电读出装置检测发光，从而获得表示放射线图像的图像信号。 根据获得的图像信号进行阈值处理，从而从放射线图像检测出预期的异常图案。 随着与预期异常图案附近的区域对应的图像信号的变化量变大，用于检测预期异常图案的阈值处理中使用的预定阈值被设置为小的值 。
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公开(公告)号：US06233362B1
公开(公告)日：2001-05-15
申请号：US09298851
申请日：1999-04-26
IPC分类号： G06K940
CPC分类号： G06T7/0012 , G06K9/4609 , G06T5/004 , G06T5/008 , G06T5/30 , G06T7/0004 , G06T2207/10116 , G06T2207/20044 , G06T2207/30068
摘要： An operation of an iris filter is carried out on an original image signal representing an image, and the degree of centralization of gradients of the original image signal with respect to a picture element is thereby calculated, each of picture elements constituting the image being taken as the picture element. An image portion, which is associated with a high degree of centralization, in the image is detected in accordance with the calculated degree of centralization. Image emphasis processing is then selectively carried out on the detected image portion. Alternatively, a morphology operation is carried out on an original image signal Dorg by using a multiply structure element Bi and a scale factor &lgr;, and a morphology signal Dmor is thereby obtained. The morphology signal Dmor represents whether each of picture elements constituting the image is or is not the one corresponding to an image portion, at which the original image signal Dorg fluctuates in a spatially narrower range than the multiply structure element Bi. Image emphasis processing is then carried out on the original image signal Dorg and in accordance with the morphology signal Dmor.
摘要翻译： 对表示图像的原始图像信号进行虹膜滤波器的操作，由此计算原始图像信号相对于图像元素的梯度的集中度，构成图像的每个图像元素被视为 图片元素。 根据计算的集中度来检测图像中与高度集中度相关联的图像部分。 然后在检测到的图像部分上选择性地执行图像强调处理。 或者，通过使用多重结构元素Bi和比例因子羔羊，对原始图像信号Dorg进行形态学操作，由此获得形态信号Dmor。 形态信号Dmor表示构成图像的每个图像是否是与图像部分对应的图像元素，其中原始图像信号Dorg在空间上比多重结构元素Bi更窄的范围内变化。 然后对原始图像信号Dorg进行图像强调处理，并根据形态信号Dmor进行。
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公开(公告)号：US6014474A
公开(公告)日：2000-01-11
申请号：US623223
申请日：1996-03-28
IPC分类号： G06K9/00 , G06K9/36 , G06K9/40 , G06K9/42 , G06K9/56 , G06T5/20 , G06T5/30 , G06T5/40 , G06T7/00 , H04N1/387 , H04N1/393
CPC分类号： G06T7/0012 , G06K9/4609 , G06T5/004 , G06T5/008 , G06T5/30 , G06T7/0004 , G06T2207/10116 , G06T2207/20044 , G06T2207/30068
摘要： An operation of an iris filter is carried out on an original image signal representing an image, and the degree of centralization of gradients of the original image signal with respect to a picture element is thereby calculated, each of picture elements constituting the image being taken as the picture element. An image portion, which is associated with a high degree of centralization, in the image is detected in accordance with the calculated degree of centralization. Image emphasis processing is then selectively carried out on the detected image portion. Alternatively, a morphology operation is carried out on an original image signal Dorg by using a multiply structure element Bi and a scale factor .lambda., and a morphology signal Dmor is thereby obtained. The morphology signal Dmor represents whether each of picture elements constituting the image is or is not the one corresponding to an image portion, at which the original image signal Dorg fluctuates in a spatially narrower range than the multiply structure element Bi. Image emphasis processing is then carried out on the original image signal Dorg and in accordance with the morphology signal Dmor.
摘要翻译： 对表示图像的原始图像信号进行虹膜滤波器的操作，由此计算原始图像信号相对于图像元素的梯度的集中度，构成图像的每个图像元素被视为 图片元素。 根据计算的集中度来检测图像中与高度集中度相关联的图像部分。 然后在检测到的图像部分上选择性地执行图像强调处理。 或者，通过使用多重结构元素Bi和比例因子λ对原始图像信号Dorg进行形态学运算，由此获得形态信号Dmor。 形态信号Dmor表示构成图像的每个图像是否是与图像部分对应的图像元素，其中原始图像信号Dorg在空间上比多重结构元素Bi更窄的范围内变化。 然后对原始图像信号Dorg进行图像强调处理，并根据形态信号Dmor进行。
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公开(公告)号：US5732121A
公开(公告)日：1998-03-24
申请号：US731001
申请日：1996-10-09
申请人： Hideya Takeo , Nobuyoshi Nakajima
发明人： Hideya Takeo , Nobuyoshi Nakajima
CPC分类号： G06T7/0012 , G01N23/04
摘要： Prospective abnormal patterns in a radiation image of an object are detected in accordance with an image signal representing the radiation image. A probability density function of the image signal, which corresponds to a region, that is inward from a contour of each of the prospective abnormal patterns having been detected, and a neighboring region, is formed. Probability density function information in accordance with the probability density function is obtained. A definite prospective abnormal pattern, which is among the prospective abnormal patterns having been detected and has a high level of probability that it will be the true abnormal pattern, is detected in accordance with the probability density function information.
摘要翻译： 根据表示放射线图像的图像信号检测物体的放射线图像中的预期异常图案。 形成了从已被检测到的每个预期异常图案的轮廓向内的对应于区域的图像信号的概率密度函数和相邻区域。 根据概率密度函数得到概率密度函数信息。 根据概率密度函数信息检测出已经被检测到并且具有高真实异常模式概率的预期异常模式之中的明确的预期异常模式。
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9.发明授权Method of automatically determining imaged body posture in medical image display 失效在医学图像显示中自动确定成像体姿势的方法
公开(公告)号：US4903310A
公开(公告)日：1990-02-20
申请号：US183954
申请日：1988-04-20
IPC分类号： G06K9/20
CPC分类号： G06K9/20 , Y10S250/909
摘要： An accumulative histogram of an image signal bearing a transmitted image of a human body is generated. The rate of change of the accumulative histogram is determined in a predetermined region of the image, and the imaged posture of the image is determined from the rate of change. Alternatively, to determine the imaged posture, the separation of a histogram is determined, or the pattern of the histogram is compared with a plurality of reference histogram patterns. The derivative of second order of a function approximated by the histogram pattern may be checked for its sign, or the histogram may be checked to determine whether it is of a single-peak form or a double-hump form. The dispersion of the histogram may also be determined.
摘要翻译： 产生承载人体的透射图像的图像信号的累积直方图。 在图像的预定区域中确定累积直方图的变化率，并且根据变化率确定图像的成像姿势。 或者，为了确定成像姿势，确定直方图的分离，或将直方图的图案与多个参考直方图模式进行比较。 可以检查由直方图图案近似的函数的二阶导数的符号，或者可以检查直方图以确定其是单峰形式还是双峰形式。 也可以确定直方图的色散。
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公开(公告)号：US06125214A
公开(公告)日：2000-09-26
申请号：US299148
申请日：1999-04-26
CPC分类号： G06T5/004 , G06T5/30 , G06T2207/10116 , G06T2207/20036 , G06T2207/20048 , G06T2207/30068
摘要： An operation of an iris filter is carried out on an original image signal representing an image, and the degree of centralization of gradients of the original image signal with respect to a picture element is thereby calculated, each of picture elements constituting the image being taken as the picture element. An image portion, which is associated with a high degree of centralization, in the image is detected in accordance with the calculated degree of centralization. Image emphasis processing is then selectively carried out on the detected image portion. Alternatively, a morphology operation is carried out on an original image signal Dorg by using a multiply structure element Bi and a scale factor .lambda., and a morphology signal Dmor is thereby obtained. The morphology signal Dmor represents whether each of picture elements constituting the image is or is not the one corresponding to an image portion, at which the original image signal Dorg fluctuates in a spatially narrower range than the multiply structure element Bi. Image emphasis processing is then carried out on the original image signal Dorg and in accordance with the morphology signal Dmor.
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