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1. 发明授权

US4903310A Method of automatically determining imaged body posture in medical image display 失效
标题翻译：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
申请人： Hideya Takeo , Nobuyuki Tanaka , Nobuyoshi Nakajima
发明人： Hideya Takeo , Nobuyuki Tanaka , Nobuyoshi Nakajima
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。

2. 发明授权

US4951201A Method of automatically determining imaged body posture in medical image display 失效
标题翻译：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：US4951201A
公开(公告)日：1990-08-21
申请号：US183809
申请日：1988-04-20
申请人： Hideya Takeo , Nobuyuki Tanaka , Nobuyoshi Nakajima
发明人： Hideya Takeo , Nobuyuki Tanaka , Nobuyoshi Nakajima
IPC分类号： G06T7/00
CPC分类号： G06T7/0048 , G06T7/0044 , G06T2207/30004 , Y10S250/909
摘要： A distribution of an image signal read from a stimulable phosphor sheet and bearing a transmitted radiation image of a human body is determined along a horizontal direction across the image. Signal values of the distribution along the direction are accumulated, and the rate of change of the accumulated values is determined to find the imaged posture of the image. Alternatively, the separation or the average value of the distribution is determined, or the pattern of the distribution is compared with a plurality of reference signal distribution patterns. The derivative of second order of a function approximated by the distribution pattern may be checked for its sign, or the distribution pattern may be checked to determine whether it is of a one-valley form or a two-valley form.
摘要翻译：沿着图像的水平方向确定从可刺激的磷光体片读取并承载人体的透射辐射图像的图像信号的分布。累积沿着方向的分布的信号值，并且确定累积值的变化率以找到图像的成像姿势。或者，确定分布的分离或平均值，或将分布的图案与多个参考信号分布模式进行比较。可以检查由分布模式近似的函数的二阶导数的符号，或者可以检查分布模式以确定它是单谷形还是双谷形。

3. 发明授权

US5714764A Method for detecting prospective abnormal patterns 失效
标题翻译：检测预期异常模式的方法
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
IPC分类号： G03B42/02 , A61B6/00 , G01N23/04 , G06T1/00
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。

4. 发明授权

US06233362B1 Image processing method and apparatus 失效
标题翻译：图像处理方法和装置
公开(公告)号：US06233362B1
公开(公告)日：2001-05-15
申请号：US09298851
申请日：1999-04-26
申请人： Hideya Takeo , Masahiko Yamada , Nobuyoshi Nakajima
发明人： Hideya Takeo , Masahiko Yamada , Nobuyoshi Nakajima
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。

5. 发明授权

US6014474A Image processing method and apparatus 失效
标题翻译：图像处理方法和装置
公开(公告)号：US6014474A
公开(公告)日：2000-01-11
申请号：US623223
申请日：1996-03-28
申请人： Hideya Takeo , Masahiko Yamada , Nobuyoshi Nakajima
发明人： Hideya Takeo , Masahiko Yamada , Nobuyoshi Nakajima
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。

6. 发明授权

US5732121A Method for detecting abnormal patterns 失效
标题翻译：异常模式检测方法
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
IPC分类号： A61B6/00 , G01N23/04 , G06T1/00 , G06T7/00
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。

7. 发明授权

US06125214A Image processing method and apparatus 失效
公开(公告)号：US06125214A
公开(公告)日：2000-09-26
申请号：US299148
申请日：1999-04-26
申请人： Hideya Takeo , Masahiko Yamada , Nobuyoshi Nakajima
发明人： Hideya Takeo , Masahiko Yamada , Nobuyoshi Nakajima
IPC分类号： G06T5/30 , G06T5/40 , G06T7/00 , G06K9/36 , G06K9/54 , G06K9/56 , H04N1/387 , H04N1/393
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.

8. 发明授权

US6125215A Image processing method and apparatus 失效
公开(公告)号：US6125215A
公开(公告)日：2000-09-26
申请号：US299231
申请日：1999-04-26
申请人： Hideya Takeo , Masahiko Yamada , Nobuyoshi Nakajima
发明人： Hideya Takeo , Masahiko Yamada , Nobuyoshi Nakajima
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.

9. 发明授权

US5157733A Radiation image processing apparatus, determination apparatus, and radiation image read-out apparatus 失效
标题翻译：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。

10. 发明授权

US06563942B2 Method for adjusting positions of radiation images 失效
标题翻译：调整放射图像位置的方法
公开(公告)号：US06563942B2
公开(公告)日：2003-05-13
申请号：US08397639
申请日：1995-03-02
申请人： Hideya Takeo , Nobuyoshi Nakajima
发明人： Hideya Takeo , Nobuyoshi Nakajima
IPC分类号： G06K900
CPC分类号： G06T3/0006 , G06T7/32 , G06T7/33 , G06T7/337 , G06T2207/10116 , G06T2207/30004
摘要： Template regions are set on a single radiation image, among a plurality of radiation images. Template matching is carried out, with which the template regions are matched with the radiation images other than the single radiation image. At least three corresponding points are thereby obtained in each of the radiation images. The corresponding points in a single radiation image, among the plurality of radiation images, are taken as reference corresponding points, and factors of affine transformation are calculated with the method of least squares. Affine transformation is then carried out using the calculated factors of affine transformation. The values of coordinates of the corresponding points in the radiation images other than the single radiation image having the reference corresponding points are thus transformed into values of coordinates of the reference corresponding points such that the reference corresponding points and the corresponding points coincide with one another.
摘要翻译：在多个辐射图像之中，在单个辐射图像上设置模板区域。进行模板匹配，模板区域与单个辐射图像以外的辐射图像匹配。由此在每个辐射图像中获得至少三个对应点。将多个辐射图像中的单个辐射图像中的对应点作为参考对应点，并用最小二乘法计算仿射变换因子。然后使用仿射变换的计算因子进行仿射变换。因此，除了具有参考对应点的单个放射线图像之外的辐射图像中的对应点的坐标值被变换为参考对应点的坐标值，使得参考对应点和对应点彼此一致。

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