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    • 2. 发明授权
    • Radar apparatus
    • 雷达装置
    • US08816902B2
    • 2014-08-26
    • US13473013
    • 2012-05-16
    • Hiroshi Itoh
    • Hiroshi Itoh
    • G01S13/46G01S13/06G01S7/35G01S13/00G01S7/00
    • G01S13/345G01S3/74G01S7/354G01S13/931G01S2013/9321G01S2013/9346G01S2013/9353G01S2013/9357
    • There is provided a radar apparatus for detecting a target. A detection signal generating unit generates detection signals of the target based on transmission and reception waves of antennas. A detection signal processing unit performs frequency analysis on the detection signals to extract signal components of the target, and performs a predetermined process on the signal components to calculate at least one of a distance to the target, a relative speed to the target, and an orientation of the target. The detection signal generating unit includes a filter unit for giving changes to the detection signals in a frequency bandwidth higher than Nyquist frequency which is a half a sampling frequency. The detection signal processing unit acquires the signal components from the detection signals to which the filter unit gives the changes to determine whether the signal components are generated by replication due to the Nyquist frequency.
    • 提供了一种用于检测目标的雷达装置。 检测信号生成部基于天线的发送接收波生成目标的检测信号。 检测信号处理单元对检测信号进行频率分析以提取目标的信号分量,并且对信号分量执行预定处理,以计算与目标的距离,与目标的相对速度和目标的相对速度中的至少一个,以及 目标的方向。 检测信号生成单元包括滤波器单元,用于在高于采样频率的一半的奈奎斯特频率的频带宽度中改变检测信号。 检测信号处理单元从滤波器单元给出改变的检测信号获取信号分量,以确定由于奈奎斯特频率是否由复制产生信号分量。
    • 5. 发明授权
    • Ophthalmologic imaging apparatus and ophthalmologic imaging method
    • 眼科成像设备和眼科成像方法
    • US07926946B2
    • 2011-04-19
    • US12831030
    • 2010-07-06
    • Shigeaki OnoHiroshi Itoh
    • Shigeaki OnoHiroshi Itoh
    • A61B3/14A61B3/10A61B3/00
    • A61B3/12G06T5/50G06T7/11G06T2207/10148G06T2207/20221G06T2207/30041
    • An apparatus that captures a fundus image of a subject's eye includes a first extraction unit configured to extract, from a first fundus image photographed with a first light quantity, an image of a first area having intensity not less than predetermined intensity and an image of a second area other than the first area, a second extraction unit configured to extract an image of an area corresponding to the first area from a second fundus image photographed with a second light quantity based on the light quantity of the first area, a third extraction unit configured to extract an image of an area corresponding to the second area from a third fundus image photographed with a third light quantity based on the light quantity of the second area, and an image combining unit configured to combine the images extracted by the second and the third extraction units.
    • 拍摄被摄体眼睛的眼底图像的装置包括:第一提取单元,被配置为从以第一光量拍摄的第一眼底图像提取具有不小于预定强度的第一区域的图像,以及图像 第二提取单元,被配置为从基于第一区域的光量的第二光量拍摄的第二眼底图像中提取与第一区域相对应的区域的图像,第三提取单元 被配置为从基于第二区域的光量的第三光量拍摄的第三眼底图像提取与第二区域对应的区域的图像,以及图像合成单元,被配置为将由第二区域提取的图像和 第三提取单位。