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1.发明公开Method and apparatus for adjusting read-out conditions and/or image processing conditions for radiation images, radiation image read-out apparatus, and radiation image analyzing method and apparatus 失效用于控制放射线图像，放射线图像读取装置和用于放射线图像分析方法和装置，读取条件和/或图像处理条件的方法和装置
公开(公告)号：EP0726542A3
公开(公告)日：1996-10-02
申请号：EP96106224.7
申请日：1991-04-17
发明人： Takeo, Hideya, c/o Fuji Photo Film Co., Ltd. , Ito, Wataru, c/o Fuji Photo Film Co., Ltd. , Shimura, Kazuo, c/o Fuji Photo Film Co., Ltd.
CPC分类号： G01T1/2014 , G06T5/009 , G06T2207/10116 , G06T2207/20084
摘要： A first image signal representing a radiation image of an object is obtained by exposing a stimulable phosphor sheet, on which the radiation image has been stored, 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 being detected. A second image signal representing the radiation image is thereafter obtained by again exposing the stimulable phosphor sheet to stimulating rays, the light emitted by the stimulable phosphor sheet being detected. Read-out conditions, under which the second image signal is to be obtained, and/or image processing conditions, under which the second image signal having been obtained is to be image processed, are adjusted on the basis of the first image signal. A storage device stores information representing a standard pattern of radiation images. A signal transforming device transforms the first image signal representing the radiation image into a transformed image signal representing the radiation image, which has been transformed into the standard pattern. A condition adjuster is provided with a neural network, which receives the transformed image signal and feeds out information representing the read-out conditions and/or the image processing conditions.
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公开(公告)号：EP0442468B1
公开(公告)日：1996-05-15
申请号：EP91102013.9
申请日：1991-02-13
CPC分类号： G06T5/004 , G01T1/2014 , G06T5/50 , H04N5/3205
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3.发明公开
公开(公告)号：EP0405457A3
公开(公告)日：1991-10-30
申请号：EP90112147.5
申请日：1990-06-26
CPC分类号： G06T7/0012 , G06K9/4604 , G06T7/00 , G06T7/12 , G06T2207/10116 , G06T2207/30061 , G06T2207/30096
摘要： Calculations are made to find the differences, Δij=fij-f0, between the value of an image signal component f0 representing a picture element P0 in a radiation image and the values of image signal components fij representing the picture elements Pij, which are located on each of a plurality of lines Li, where i =1, 2, ..., n, extending from the picture element PO to the peripheral parts of the radiation image, and which are spaced a plurality of distances rij, where j = 1, 2, ..., m, from the picture element P0. A representative value, which is representative of the differences Δij, is then found for each of the lines Li. A mean level value of two representative values for each set of two lines, which extend from the picture element PO in approximately opposite directions, is then calculated. From the mean-level values, which have been calculated for a plurality of the sets of lines, a judgment is made as to whether the picture element PO falls or does not fall within the region corresponding to a circular pattern in the radiation image.
摘要翻译： 进行计算以找到表示放射线图像中的图像元素P0的图像信号分量f0的值与表示图像元素Pij的图像信号分量fij的值之间的差值DELTA ij = fij-f0 在从图像元素P0延伸到放射线图像的周边部分的多个线路Li，其中i = 1,2，...，n中的每一条线分隔开多个距离rij，其中j = 1，2，...，m。 然后，对于每行Li，找到代表差值DELTA ij的代表值。 然后计算从大致相反方向从像素P0延伸的每组两行的两个代表值的平均电平值。 根据针对多组行计算的平均值，判断图像元素P0是否落在与辐射图像中的圆形图案对应的区域内。
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4.发明授权Method and apparatus for adjusting read-out conditions and/or image processing conditions for radiation images, radiation image read-out apparatus, and radiation image analyzing method and apparatus 失效用于控制放射线图像，放射线图像读取装置和用于放射线图像分析方法和装置，读取条件和/或图像处理条件的方法和装置
公开(公告)号：EP0726542B1
公开(公告)日：1999-09-15
申请号：EP96106224.7
申请日：1991-04-17
发明人： Takeo, Hideya, c/o Fuji Photo Film Co., Ltd. , Ito, Wataru, c/o Fuji Photo Film Co., Ltd. , Shimura, Kazuo, c/o Fuji Photo Film Co., Ltd.
CPC分类号： G01T1/2014 , G06T5/009 , G06T2207/10116 , G06T2207/20084
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公开(公告)号：EP0689794B1
公开(公告)日：1998-07-22
申请号：EP95115430.1
申请日：1991-02-13
CPC分类号： G06T5/004 , G01T1/2014 , G06T5/50 , H04N5/3205
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公开(公告)号：EP0753828A3
公开(公告)日：1997-04-23
申请号：EP96111386.7
申请日：1996-07-15
IPC分类号： G06T3/40
CPC分类号： G06T3/4007 , G06F17/175
摘要： An original image signal, which represents an original image and is made up of a series of original image signal components Yij, is obtained. Corresponding interpolation coefficients Bij and Cij, which are set for each of the original image signal components Yij, in two different interpolating functions f and g, represented by Formulas (1) and (2), for obtaining two interpolation images having different levels of sharpness are linearly combined with each other by using Formula (3). A new interpolation coefficient Aij is thereby obtained. An interpolating operation is carried out on the original image signal components Yij with an interpolating function h, which has the new interpolation coefficient Aij and is represented by Formula (4). An interpolation image signal is thereby obtained, which is made up of a series of image signal components occurring at intervals different from those of the original image signal components Yij, (1) f=ΣBij·Yij (2) g=ΣCij·Yij (3) Aij=(1-α)Bij+αCij (4) h=ΣAij·Yij in which i=1, 2, ..., and j=1, 2, ...,
The coefficient α in Formula (3) is set to be one of real numbers including a range smaller than 0 and/or a range larger than 1.-
公开(公告)号：EP0689795A3
公开(公告)日：1996-04-03
申请号：EP95115473.1
申请日：1991-02-13
CPC分类号： G06T5/004 , G01T1/2014 , G06T5/50 , H04N5/3205
摘要： In an image smoothing method a smoothing process is carried out on an image signal made up of a series of image signal components representing picture elements in an image. For extracting only a projection part for keeping edges in the image sharp a probability density function is generated and a mean-level value is determined. Moreover, only values within a certain range can be used for determining the mean-level value. Further, corresponding apparatus for carrying out a smoothing process are disclosed.
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8.发明公开Method and apparatus for classifying picture elements in radiation images 失效Strahlungsbildern的Verfahren und Einrichtung zum Klassifizieren von Bildelementen
公开(公告)号：EP0698855A1
公开(公告)日：1996-02-28
申请号：EP95116193.4
申请日：1990-06-26
CPC分类号： G06T7/0012 , G06K9/4604 , G06T7/00 , G06T7/12 , G06T2207/10116 , G06T2207/30061 , G06T2207/30096
摘要： Pixels are classified as belonging to or not belonging to a circular pattern. The method calculates the mean intensity QO of a block of pixels centred on pixel PO, and the mean intensites Qi of peripheral pixel blocks surrounding the central region around PO; the differences Δi between QO and Qi are calculated, and the ratio of a value characteristic of the differences Δi and the dispersion in the differences Δi is thresholded to give determine whether or not pixel PO falls within a circular pattern.
摘要翻译： 像素被归类为属于或不属于圆形图案。 该方法计算以像素PO为中心的像素块的平均强度QO，围绕PO周围的中心区域周围像素块的平均强度Qi; 计算QO和Qi之间的差ΔTA，并且将阈值DELTA i的值特性与差DELTA i中的色散的比率阈值化，以确定像素PO是否在圆形图案内。
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公开(公告)号：EP0753828B1
公开(公告)日：2002-10-02
申请号：EP96111386.7
申请日：1996-07-15
IPC分类号： G06T3/40
CPC分类号： G06T3/4007 , G06F17/175
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10.发明授权
公开(公告)号：EP0702321B1
公开(公告)日：1999-12-22
申请号：EP95116196.7
申请日：1990-06-26
CPC分类号： G06T7/0012 , G06K9/4604 , G06T7/00 , G06T7/12 , G06T2207/10116 , G06T2207/30061 , G06T2207/30096
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