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    • 2. 发明授权
    • Image processing apparatus for moving camera
    • 影像处理装置
    • US5986694A
    • 1999-11-16
    • US921503
    • 1997-09-02
    • Mitsutoshi Iino
    • Mitsutoshi Iino
    • G06T1/00G06T7/00H04N5/232H04N17/00
    • H04N5/232
    • With employment of two images acquired by imaging an imaging object at two different positions and also parameters of a camera under imaging operation at these positions, both the imaging positions with respect to an origin, and also positions of the imaging object with respect to both the imaging positions are obtained as three-dimensional vectors. With employment of the calculated three-dimensional vector of the imaging position with respect to the origin and also the three-dimensional vector of the imaging object position with respect to the imaging position, the imaging object position with respect to the origin is mapped as the three-dimensional vector.
    • 通过使用通过在两个不同位置处成像对象而获得的两个图像以及在这些位置处的成像操作下的相机的参数,两个成像位置相对于原点,以及成像对象相对于两者的位置 获得成像位置作为三维向量。 利用相对于原点的成像位置的计算的三维向量以及相对于成像位置的成像对象位置的三维向量,将成像对象相对于原点的位置映射为 三维矢量。
    • 3. 发明授权
    • Magnetic resonance imaging apparatus
    • 磁共振成像装置
    • US5119026A
    • 1992-06-02
    • US460112
    • 1990-05-03
    • Mitsutoshi IinoShirou NakataoHiromi KawaguchiMasaru TanakaToshiaki Yonekura
    • Mitsutoshi IinoShirou NakataoHiromi KawaguchiMasaru TanakaToshiaki Yonekura
    • A61B5/055G01N29/04G01R33/48G01R33/56
    • G01R33/56G01N2291/048
    • An arrangement in a magnetic resonance imaging apparatus for producing image data of an object being examined. The object is subjected to magnetic fields and RF pulse signals which produce echo signals. The echo signals which represent views of the object are detected. Data collecting circuitry selectively performs a data collection process on the detected echo signals to produce collected data such that, for those echo signals of a relatively small strength, part of the data collection process is suppressed and, for those echo signals of a relatively great strength, the data collection process is performed a plurality of times under identical operating conditions. A data processor processes the collected data to produce view data such that, for the echo signals for which the data collection process has been suppressed, interpolation data is produced and, for the echo signals for which the data collection process has been performed a plurality of times, a summing and averaging operation is performed on the collected data. The data processor combines the interpolation data with the summed and averaged data thereby producing view data. An image constructor performs a Fourier transform on the view data thereby constructing image data.
    • 用于产生被检查物体的图像数据的磁共振成像装置中的布置。 该物体受到产生回波信号的磁场和RF脉冲信号。 检测表示对象的视图的回波信号。 数据收集电路选择性地对检测到的回波信号执行数据收集处理,以产生收集的数据,使得对于相对较小强度的那些回波信号,数据收集过程的一部分被抑制,并且对于那些相对较强的回波信号 在相同的操作条件下进行多次数据采集处理。 数据处理器处理所收集的数据以产生视图数据,使得对于已经抑制了数据收集过程的回波信号,产生插值数据,并且对于已经执行了数据收集处理的回波信号, 次,对所收集的数据执行求和和平均操作。 数据处理器将插值数据与相加和平均数据组合,从而产生视图数据。 图像构造器对视图数据执行傅里叶变换,从而构建图像数据。
    • 4. 发明授权
    • Magnetic resonance imaging apparatus
    • 磁共振成像装置
    • US5089777A
    • 1992-02-18
    • US533593
    • 1990-06-05
    • Mitsutoshi IinoShirou NakatoSeiichi ShinkaiHideki ShimojimaHiromi Kawaguchi
    • Mitsutoshi IinoShirou NakatoSeiichi ShinkaiHideki ShimojimaHiromi Kawaguchi
    • A61B5/055G01R33/48G01R33/561
    • G01R33/561
    • When a two-dimensional Fourier transform is used, a magnetic resonance imaging apparatus has a first arithmetic unit for executing the Fourier transform in a first dimension in the repetition time interval immediately after each data acquisition or in parallel with the data acquisition, and a second arithmetic unit for executing the Fourier transform in a second dimension after all the data has been acquired. When a three-dimensional Fourier transform is used, the apparatus has a first arithmetic unit for executing the Fourier transform in a first dimension in the time interval immediately after each data acquisition or in parallel with the data acquisition, a second arithmetic unit for executing the Fourier transform in a second dimension immediately after the data acquisition of one matrix in the phase encoding direction, and a third arithmetic unit for executing the Fourier transform in a third dimension after all the data are acquired.
    • 当使用二维傅里叶变换时,磁共振成像装置具有第一运算单元,用于在每次数据采集之后或与数据采集并行的情况下,在重复时间间隔中的第一维中执行傅立叶变换, 算术单元,用于在获取所有数据之后在第二维度中执行傅里叶变换。 当使用三维傅里叶变换时,该装置具有第一运算单元,用于在每个数据采集之后的时间间隔或与数据采集并行地执行第一维中的傅立叶变换;第二运算单元,用于执行 在相位编码方向上的一个矩阵的数据采集之后立即在第二维中进行傅立叶变换,以及第三运算单元,用于在获取所有数据之后的第三维中执行傅里叶变换。