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91. 发明授权

US5761334A Apparatus for computer aided diagnosis of medical images having abnormal patterns 失效
标题翻译：用于具有异常模式的医学图像的计算机辅助诊断的装置
公开(公告)号：US5761334A
公开(公告)日：1998-06-02
申请号：US590192
申请日：1996-01-23
申请人： Nobuyoshi Nakajima , Hideya Takeo , Masahiko Yamada
发明人： Nobuyoshi Nakajima , Hideya Takeo , Masahiko Yamada
IPC分类号： G06F19/00 , G06T7/00 , G06K9/00
CPC分类号： G06T7/0012 , G06F19/345 , G06F19/3487 , G06F19/321 , G06F19/3406 , G06F19/3456 , G06T2207/10116 , G06T2207/30068
摘要： An apparatus for computer aided diagnosis of images comprises an entire area image memory for storing an entire area image signal representing a radiation image of an object, and a prospective abnormal pattern detecting device for detecting a prospective abnormal pattern in the radiation image in accordance with the entire area image signal. A judgment device makes a judgment as to the presence or absence of the prospective abnormal pattern in accordance with the results of the detection of the prospective abnormal pattern carried out by the prospective abnormal pattern detecting device. In cases where the judgment device has judged that the prospective abnormal pattern is present, a local area extracting device extracts a local area limited image signal corresponding to a local area containing the prospective abnormal pattern from the entire area image signal having been stored in the entire area image memory. A local area limited image displaying device displays the image of the local area in accordance with the local area limited image signal, which has been extracted by the local area extracting device. An entire area image displaying device displays the entire area of the radiation image of the object in accordance with the entire area image signal.
摘要翻译：一种用于图像的计算机辅助诊断的装置包括：整个区域图像存储器，用于存储表示对象的放射线图像的整个区域图像信号;以及预期异常模式检测装置，用于根据所述放射线图像检测所述放射线图像中的预期异常模式整个区域图像信号。判断装置根据预期异常模式检测装置进行的预期异常模式的检测结果判断是否存在预期异常模式。在判断装置判断为存在预期异常模式的情况下，局部区域提取装置从整体存储的全部区域图像信号中提取与包含预期异常图案的局部区域对应的局部区域限制图像信号区域图像存储器。局部区域限制图像显示装置根据由局部区域提取装置提取的局部区域限制图像信号显示局部区域的图像。整个区域图像显示装置根据整个区域图像信号显示对象的放射线图像的整个区域。

92. 发明授权

US5608813A Method for compressing dynamic ranges of images using a monotonously decreasing function 失效
标题翻译：使用单调递减函数压缩图像的动态范围的方法
公开(公告)号：US5608813A
公开(公告)日：1997-03-04
申请号：US417963
申请日：1995-04-06
申请人： Nobuyoshi Nakajima
发明人： Nobuyoshi Nakajima
IPC分类号： H04N5/208 , G06T5/20 , H04N1/407 , H04N1/41 , G06K9/36
CPC分类号： G06T5/004 , G06T5/20 , H04N1/407
摘要： With a method for compressing a dynamic range of an image, an original image signal Sorg representing an original image is processed, and a processed image signal Sproc representing an image having a narrower dynamic range than the original image is thereby generated. The method comprises the steps of calculating the value of an unsharp mask signal Sus corresponding to each of picture elements in the original image by averaging the values of image signal components of the original image signal Sorg, which image signal components represent the picture elements belonging to a predetermined region surrounding each picture element. Values of the processed image signal Sproc are calculated with the formulaSproc=Sorg+f1(Sus)where f1(Sus) represents a function, the value of which decreases monotonously as the value of the unsharp mask signal Sus increases. Alternatively, in lieu of the function f1(Sus), a function f2(Sus) is employed, the value of which decreases monotonously as the value of the unsharp mask signal Sus increases, and the differential coefficient of which is continuous.
摘要翻译：利用用于压缩图像的动态范围的方法，处理表示原始图像的原始图像信号Sorg，从而生成表示具有比原始图像更窄的动态范围的图像的处理后的图像信号Sproc。该方法包括以下步骤：通过对原始图像信号Sorg的图像信号分量的值进行平均来计算与原始图像中的每个图像元素相对应的钝化掩模信号Sus的值，该图像信号分量表示属于围绕每个图像元素的预定区域。使用公式Sproc = Sorg + f1（Sus）计算处理后的图像信号Sproc的值，其中f1（Sus）表示函数，其值随着钝化掩模信号Sus的值增加而单调减小。或者，代替函数f1（Sus），使用函数f2（Sus），其值随着钝化掩模信号Sus的值增加而单调减小，并且其微分系数是连续的。

93. 发明授权

US5557303A Thermal recording apparatus which can draw black borders 失效
标题翻译：可以绘制黑色边框的热记录设备
公开(公告)号：US5557303A
公开(公告)日：1996-09-17
申请号：US135029
申请日：1993-10-13
申请人： Toshitaka Agano , Nobuyoshi Nakajima
发明人： Toshitaka Agano , Nobuyoshi Nakajima
IPC分类号： B41J2/36 , B41J2/47 , H04N1/29 , H04N1/40 , B41J2/38 , B41J2/45
CPC分类号： H04N1/295 , B41J2/36 , B41J2/473 , H04N1/40037
摘要： In a thermal recording apparatus using a thermo-sensitive recording medium, a semiconductor laser outputs a laser beam modulated according to a gradation signal of an image to be recorded for a first time interval required to scan an image region of the recording medium, and an acousto-optic modulator modulates a laser beam generated by a gas laser to supply the image region with heat energy less than a coloring energy of the recording medium for the first time interval, and to supply a region other than the image region with a high energy exceeding the coloring energy for a time interval required to scan the other region, to draw black borders surrounding the image recorded on the recording medium.
摘要翻译：在使用热敏记录介质的热敏记录装置中，半导体激光器按照扫描记录介质的图像区域所需的第一时间间隔输出根据待记录图像的灰度信号调制的激光束，声光调制器调制由气体激光器产生的激光束，以在第一时间间隔内为图像区域提供小于记录介质的着色能的热能，并且以高能量供应图像区域以外的区域在扫描其他区域所需的时间间隔内超过着色能量，以绘制在记录介质上记录的图像周围的黑色边界。

94. 发明授权

US5231575A Image read-out apparatus 失效
标题翻译：图像读出装置
公开(公告)号：US5231575A
公开(公告)日：1993-07-27
申请号：US600935
申请日：1990-10-22
申请人： Nobuyoshi Nakajima
发明人： Nobuyoshi Nakajima
IPC分类号： G01T1/29 , G06K11/00 , H04N1/04 , H04N1/113 , H04N1/12 , H04N1/40
CPC分类号： H04N1/0405 , G01T1/2014 , G06K11/00 , H04N1/0402 , H04N1/0408 , H04N1/0443 , H04N1/40 , H04N1/40068 , H04N1/1135 , H04N1/12 , H04N2201/0412 , H04N2201/04756
摘要： An image read-out apparatus comprises a readout section for scanning a recording medium, on which an image has been recorded, in a main scanning direction and a sub-scanning direction, and thereby generating an image signal which has been sampled with a predetermined sampling density from the image, and an input section from which information about the type of the image and a high-density sampling instructing signal can be entered. The read-out section is provided with a sampling density adjusting device, which adjusts the predetermined sampling density so that it becomes equal to a sampling density corresponding to the type of the image in cases where only the information about the type of the image has been entered from the input section, and which adjusts the predetermined sampling density so that it becomes equal to a high sampling density, which is higher than the sampling density corresponding to the type of the image, in cases where the high-density sampling instructing signal has been entered from the input section.
摘要翻译：图像读出装置包括读取部，用于在主扫描方向和副扫描方向上扫描已经记录有图像的记录介质，从而生成以预定取样采样的图像信号来自图像的浓度，以及可以输入关于图像的类型和高密度采样指示信号的信息的输入部。读出部分设置有采样密度调节装置，其调整预定的采样密度，使得其仅等于图像的类型的信息等于与图像的类型相对应的采样密度在输入部分输入，并且在高密度采样指示信号具有的情况下调整预定采样密度使其变得等于高于对应于图像类型的采样密度的高采样密度从输入部分输入。

95. 发明授权

US5123054A Abnormal pattern detecting apparatus 失效
标题翻译：异常模式检测装置
公开(公告)号：US5123054A
公开(公告)日：1992-06-16
申请号：US599928
申请日：1990-10-19
申请人： Shoji Hara , Nobuyoshi Nakajima
发明人： Shoji Hara , Nobuyoshi Nakajima
IPC分类号： G06T7/00
CPC分类号： G06T7/0012 , G06T2207/10116 , G06T2207/10144 , G06T2207/30061
摘要： An abnormal pattern detecting apparatus comprises an image operating device which generates a soft tissue image signal representing a soft tissue image, a bone image signal representing a bone image, and an original image signal representing an original image from several image signals representing radiation images of an object, which radiation images have been recorded by exposing the object to at least two kinds of radiation having different energy distributions. A prospective abnormal pattern finding device finds prospective abnormal patterns, which appear in the soft tissue, bone, and original images, by processing the corresponding image signals with an abnormal pattern finding filter. A bone pattern finding device finds information about the positions of bone patterns appearing in the radiation image. From information about the positions of the prospective abnormal patterns and the information about the positions of the bone patterns, a judgment device judges whether the prospective abnormal patterns thus found are or are not true abnormal patterns.
摘要翻译：异常图案检测装置包括图像操作装置，其生成表示软组织图像的软组织图像信号，表示骨骼图像的骨骼图像信号和表示来自表示原始图像的原始图像的原始图像信号，所述图像信号表示来自物体，通过将物体暴露于具有不同能量分布的至少两种辐射而已经记录了这些辐射图像。通过用异常模式寻找过滤器处理相应的图像信号，预期的异常模式发现装置发现出现在软组织，骨骼和原始图像中的预期异常模式。骨骼图案查找装置找到关于辐射图像中出现的骨骼图案的位置的信息。从关于预期异常模式的位置的信息和关于骨骼图案的位置的信息，判断装置判断所发现的预期异常模式是否是真正的异常模式。

96. 发明授权

US5048110A Method and apparatus for automatically correcting subtraction image density 失效
标题翻译：用于自动校正减影图像浓度的方法和装置
公开(公告)号：US5048110A
公开(公告)日：1991-09-10
申请号：US318465
申请日：1989-02-27
申请人： Nobuyoshi Nakajima
发明人： Nobuyoshi Nakajima
IPC分类号： G06T5/00 , G06T5/40
CPC分类号： G06T7/0083 , G06T5/009 , G06T5/40 , G06T2207/10116 , G06T2207/30101
摘要： In a temporal subtraction processing conducted by use of stimulable phosphor sheets, the difference between maximum transmitting radiation amount of digital image signals detected from the stimulable phosphor sheets carrying radiation images stored therein is calculated. The difference is added to a difference signal obtained by the subtraction processing prior to a gradation processing, or a gradation conversion table is shifted by the difference towards the high density side along the input signal coordinate axis. Or, read-out conditions in final read-out are adjusted so that the difference is eliminated. Or, a maximum frequency point signal is calculated from a histogram of the difference signal, the difference between a signal representing the standard background density of a subtraction image and the maximum frequency point signal is calculated, and correction is made so that the background density in the subtraction image becomes always the same.
摘要翻译：在通过使用可刺激的磷光体片进行的时间减法处理中，计算从携带其中存储的辐射图像的可刺激的磷光体片检测到的数字图像信号的最大透射辐射量之间的差异。该差值被加到通过灰度处理之前的减法处理获得的差分信号，或灰度转换表沿输入信号坐标轴向高密度侧偏移。或者，调整最终读取中的读出条件，以消除差异。或者，根据差分信号的直方图计算最大频点信号，计算表示减法图像的标准背景浓度的信号与最大频率点信号之间的差异，进行校正，使得背景浓度减法图像总是相同。

97. 发明授权

US5006708A Method for generating radiation image signals 失效
标题翻译：用于产生辐射图像信号的方法
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
IPC分类号： G21K4/00 , A61B6/00 , G03B42/02 , G06T5/20 , H04N1/04 , H04N1/409 , H04N5/32 , H04N7/18
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.

98. 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。

99. 发明授权

US4896038A Radiation image read-out method and apparatus 失效
标题翻译：辐射图像读出方法和装置
公开(公告)号：US4896038A
公开(公告)日：1990-01-23
申请号：US148832
申请日：1988-01-27
申请人： Nobuyoshi Nakajima
发明人： Nobuyoshi Nakajima
IPC分类号： G03B42/02 , A61B6/00 , G06K9/20 , G06T1/00 , H04N1/04
CPC分类号： G06K9/2054
摘要： In a radiation image read-out method and apparatus, final read-out is carried out for obtaining image signals for use in reproduction of a visible image from a recording medium carrying a radiation image of an object recorded thereon, image processing conditions for use in processing of the final read-out signals obtained by the final read-out are adjusted, and image processing of the final read-out image signals is carried out by use of the image processing conditions. In the case where subdivision image recording is carried out by exposing each of a plurality of subdivisions on the recording medium to radiation in the course of the radiation image recording, image signals at a subdivision, which has not been exposed to the radiation, is removed from the final read-out image signals on the basis of information on subdivision image recording, and the image processing conditions are adjusted on the basis of the remainder of the final read-out image signals.
摘要翻译：在放射线图像读出方法和装置中，执行最终读出以获得用于再现由记录在其上记录的物体的放射线图像的记录介质再现可视图像的图像信号，用于调整通过最终读取获得的最终读出信号的处理，并且通过使用图像处理条件来执行最终读出的图像信号的图像处理。在通过在放射线图像记录的过程中将记录介质上的多个细分中的每一个分解成辐射来进行细分图像记录的情况下，去除尚未暴露于辐射的细分处的图像信号被去除基于关于细分图像记录的信息的最终读出图像信号，并且基于最终读出的图像信号的剩余部分来调整图像处理条件。

100. 发明授权

US4864132A Radiation image read-out apparatus 失效
标题翻译：辐射图像读出装置
公开(公告)号：US4864132A
公开(公告)日：1989-09-05
申请号：US789238
申请日：1985-10-18
申请人： Yuuma Adachi , Nobuyoshi Nakajima
发明人： Yuuma Adachi , Nobuyoshi Nakajima
IPC分类号： H04N1/113 , A61B6/00 , G03B42/02 , H04N1/04
CPC分类号： G03B42/02
摘要： In a radiation image read-out apparatus wherein preliminary read-out is ordinarily conucted prior to final read-out for adjusting final read-out conditions and/or image processing conditions for radiation images stored on stimulable phosphor sheets, the preliminary read-out can be omitted and the final read-out and image processing be conducted on the basis of fixed conditions when necessary to obtain reproduced images with the same contrast.
摘要翻译：在放射图像读出装置中，其中预先读出通常在最终读出之前被设计用于调节最终读出条件和/或存储在可刺激的磷光体片上的辐射图像的图像处理条件，预备读出可以在必要时，根据固定条件进行最终读出和图像处理，以获得具有相同对比度的再现图像。

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