Image processing apparatus and method for detecting change in image
    1.
    发明授权
    Image processing apparatus and method for detecting change in image 有权
    用于检测图像变化的图像处理装置和方法

    公开(公告)号:US06421452B1

    公开(公告)日:2002-07-16

    申请号:US09363105

    申请日:1999-07-29

    IPC分类号: G06K900

    摘要: An image processing apparatus or an image processing method is arranged to input image data obtained by an image pickup device and an image pickup parameter of the image pickup device used in obtaining the image data, to make a comparison between the image pickup parameter for a target image and the image pickup parameter for another image, and to decide whether or not the target image differs from the other image, according to a result of the comparison.

    摘要翻译: 图像处理装置或图像处理方法被配置为输入由图像拾取装置获得的图像数据和用于获得图像数据的图像拾取装置的图像拾取参数,以便对目标的图像拾取参数进行比较 图像和用于另一图像的图像拾取参数,并且根据比较的结果来判定目标图像是否与另一图像不同。

    Radiography apparatus and radiation image processing method
    3.
    发明申请
    Radiography apparatus and radiation image processing method 有权
    射线照相设备和放射线图像处理方法

    公开(公告)号:US20050111615A1

    公开(公告)日:2005-05-26

    申请号:US10946431

    申请日:2004-09-21

    申请人: Tomohiko Matsuura

    发明人: Tomohiko Matsuura

    摘要: A plurality of pieces of image data processed by a preprocessed circuit are sequentially received and at least one representative image is selected from among the plurality of pieces of image data by a representative image selection circuit. For example, one piece of image data out of every 250 pieces of image data is selected from among 1000 pieces of acquired image data to select four pieces of image data as representative images. An irradiated area extraction circuit extracts X-ray irradiated areas of the representative images. A reconstruction area determination circuit determines a CT reconstruction area on the basis of the X-ray irradiated areas. The reconstruction circuit reconstructs CT images from all or part of the acquired image data on the basis of the CT reconstruction area.

    摘要翻译: 顺序地接收由预处理电路处理的多个图像数据,并且通过代表图像选择电路从多个图像数据中选择至少一个代表图像。 例如,从1000个获取的图像数据中选择每250个图像数据中的一个图像数据,以选择4个图像数据作为代表图像。 照射区域提取电路提取代表图像的X射线照射区域。 重建区域确定电路基于X射线照射区域来确定CT重建区域。 重构电路根据CT重建区域,从全部或部分获取的图像数据重建CT图像。

    Radiation imaging apparatus and dark current correction method therefor
    4.
    发明授权
    Radiation imaging apparatus and dark current correction method therefor 有权
    辐射成像装置及其暗电流校正方法

    公开(公告)号:US08229067B2

    公开(公告)日:2012-07-24

    申请号:US12723814

    申请日:2010-03-15

    申请人: Tomohiko Matsuura

    发明人: Tomohiko Matsuura

    IPC分类号: G09G5/02 G01N23/04 G06K9/00

    CPC分类号: H04N5/361 A61B6/583 H04N5/32

    摘要: A radiation imaging apparatus comprises a radiation detection unit that detects radiation, an instruction unit that issues a radiation-imaging start instruction, and a setting unit to set an irradiation delay period that extends between the issuance of an imaging start instruction and the time irradiation begins. A first acquisition unit acquires a plurality of dark current images during the set irradiation delay period, and a second acquires a radiation image of the object after the end of the set irradiation delay period. A correction data generation unit generate correction data for the acquired radiation image, based on the dark current images, and a correction unit executes dark current correction processing of the acquired radiation image using the correction data.

    摘要翻译: 放射线摄像装置包括:检测放射线的放射线检测单元,发出放射线摄影开始指示的指示单元;以及设定单元,设定在成像开始指示的发出与时间照射之间开始延伸的照射延迟期间 。 第一采集单元在设定的照射延迟时段期间获取多个暗电流图像,第二采集单元在设置的照射延迟周期结束之后获取对象的放射线图像。 校正数据生成单元基于暗电流图像生成所获取的放射线图像的校正数据,并且校正单元使用校正数据执行所获取的放射线图像的暗电流校正处理。

    Irradiation field extracting method and apparatus and recording medium
    8.
    发明授权
    Irradiation field extracting method and apparatus and recording medium 有权
    照射场提取方法及装置及记录介质

    公开(公告)号:US06885770B2

    公开(公告)日:2005-04-26

    申请号:US09832953

    申请日:2001-04-12

    申请人: Tomohiko Matsuura

    发明人: Tomohiko Matsuura

    摘要: It is an object to enable an irradiation field to be accurately extracted. An irradiation field extracting method of extracting an irradiation field from a radiation image is constructed by a step of extracting characteristic points in the radiation image by using geometric patterns for detecting an irradiation field edge and a step of detecting an edge portion of the irradiation field on the basis of the characteristic points.

    摘要翻译: 本发明的目的是能够准确地提取照射场。 通过使用用于检测照射场边缘的几何图案来提取放射线图像中的特征点的步骤和对照射场的边缘部分进行检测的步骤来构建从放射线图像提取照射场的照射场提取方法 特点的基础。

    Image processing apparatus and its method, program and storage medium
    9.
    发明申请
    Image processing apparatus and its method, program and storage medium 失效
    图像处理装置及其方法,程序和存储介质

    公开(公告)号:US20050036707A1

    公开(公告)日:2005-02-17

    申请号:US10941879

    申请日:2004-09-16

    申请人: Tomohiko Matsuura

    发明人: Tomohiko Matsuura

    摘要: An object of this invention is to efficiently attain noise removal. In order to achieve the object, the discrete wavelet transforms of an input image are computed to output wavelet coefficients of respective subbands (S301). Appropriate threshold values are respectively set for subbands HL, LH, and HH indicating high-frequency components (S302a, S302b, S302c). The wavelet coefficients of the subbands HL, LH, and HH then undergo threshold value processes using the set threshold values for the respective subbands (S303a, S303b, S303c). Pixels to be processed in a coefficient conversion process are determined based on the threshold value processing results of the respective subbands (S304). The wavelet coefficients of the respective subbands corresponding to the pixels to be processed determined in step S304 undergo coefficient conversion (S305), and the converted transformation coefficients undergo inverse discrete wavelet transformation, thus reconstructing and outputting a noise-removed image (S306).

    摘要翻译: 本发明的目的是有效地实现噪声去除。 为了实现该目的,计算输入图像的离散小波变换以输出各个子带的小波系数(S301)。 分别对表示高频分量的子带HL,LH,HH分别设定合适的阈值(S302a,S302b,S302c)。 然后,子带HL,LH和HH的小波系数使用各子带的设定的阈值进行阈值处理(S303a,S303b,S303c)。 基于各个子带的阈值处理结果来确定在系数转换处理中要处理的像素(S304)。 对应于在步骤S304中确定的要处理的像素的各个子带的小波系数经历系数转换(S305),并且转换的变换系数经历逆离散小波变换,从而重建并输出噪声去除图像(S306)。

    Video processing apparatus, control method therefor, and storage medium
    10.
    发明授权
    Video processing apparatus, control method therefor, and storage medium 失效
    视频处理装置,其控制方法和存储介质

    公开(公告)号:US06704042B2

    公开(公告)日:2004-03-09

    申请号:US09456293

    申请日:1999-12-08

    IPC分类号: H04N1500

    摘要: When stereoscopic video data is distributed through a network, some terminal cannot process the distributed stereoscopic video data because the format of the data does not correspond to the terminal. Likewise, when video data are input from a plurality of types of cameras with different stereoscopic video data formats, data of an incompatible format cannot be processed. In order to prevent this problem, there is provided a stereoscopic video apparatus which inputs stereoscopic video data, converts the format of the input stereoscopic video data into a format suitable to output operation, and outputs the converted stereoscopic video data to a network.

    摘要翻译: 当通过网络分发立体视频数据时,由于数据格式与终端不对应,某些终端无法处理分布式立体视频数据。 类似地,当从具有不同立体视频数据格式的多种类型的相机输入视频数据时,不能处理不兼容格式的数据。 为了防止这个问题,提供了一种输入立体视频数据的立体视频设备,将输入的立体视频数据的格式转换为适合于输出操作的格式,并将转换的立体视频数据输出到网络。