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    • 24. 发明授权
    • X-ray CT apparatus and image reconstruction method
    • X射线CT装置及图像重建方法
    • US08971607B2
    • 2015-03-03
    • US13989564
    • 2011-12-07
    • Taiga GotoHisashi TakahashiKoichi Hirokawa
    • Taiga GotoHisashi TakahashiKoichi Hirokawa
    • G06K9/00G06T11/00A61B6/03A61B6/00
    • G06T11/003A61B6/032A61B6/4078G06T11/006G06T2211/421
    • In order to execute a high-resolution reconstructible distance-driven back projection process and to generate a high-resolution tomographic image, an X-ray CT apparatus 1 determines the presence/absence of opposing data corresponding to each piece of target data on the basis of scanning conditions, and calculates a phase range where opposing data is present (Step 21). The X-ray CT apparatus 1 performs high-resolution conversion of a zero-insertion method on a phase range where opposing data is present, and performs high-resolution conversion using a data interpolation method on a phase range where no opposing data is present, thereby creating double sampled high-resolution projection data, and calculates a view weight (Step 22). The X-ray CT apparatus 1 performs a distance-driven high-resolution back projection process using high-resolution projection data and generates a reconstructed image (Step 23).
    • 为了执行高分辨率可重构的距离驱动反投影处理并生成高分辨率断层图像,X射线CT装置1基于每个目标数据确定对应的数据的存在/不存在 并计算相对数据存在的相位范围(步骤21)。 X射线CT装置1在存在相对数据的相位范围上执行零插入方式的高分辨率变换,并且在不存在相反数据的相位范围上使用数据插值方法进行高分辨率转换, 从而产生双重采样的高分辨率投影数据,并计算视图权重(步骤22)。 X射线CT装置1使用高分辨率投影数据进行距离驱动的高分辨率反投影处理,并生成重构图像(步骤23)。
    • 25. 发明申请
    • IMAGE RECONSTRUCTION DEVICE AND IMAGE RECONSTRUCTION METHOD
    • 图像重建设备和图像重构方法
    • US20140193055A1
    • 2014-07-10
    • US14128769
    • 2012-07-05
    • Hisashi TakahashiTaiga GotoKoichi Hirokawa
    • Hisashi TakahashiTaiga GotoKoichi Hirokawa
    • G06T11/00
    • G06T11/006G06T2211/412G06T2211/424
    • To provide an image reconstruction device capable of creating an image with image quality matching the operator's request when a cross-sectional image is reconstructed through a repeated calculation, the image reconstruction device which performs a repeated calculation on the basis of a difference between calculated projection data and measured projection data, the calculated projection data being obtained by performing a forward projection calculation on a reconstructed image which is reconstructed based on the measured projection data, includes an input section to which an image quality parameter which is considered to be important by an operator is input, a weight calculation section that calculates a weighting coefficient on the basis of the image quality parameter, and a repeated calculation section that performs a repeated calculation on the basis of a value obtained by weighting and adding a pixel value obtained in the previous iteration to a pixel value obtained from now using the weighting coefficient.
    • 为了提供一种能够通过重复计算重建横截面图像时,能够创建具有与操作者的请求相匹配的图像质量的图像重建装置,该图像重建装置基于计算出的投影数据之间的差进行重复计算 并且测量的投影数据,通过对基于测量的投影数据重建的重建图像执行前向投影计算而获得的所计算的投影数据包括输入部分,被认为对于运营商来说重要的图像质量参数 基于图像质量参数计算加权系数的权重计算部分,以及基于通过对在先前迭代中获得的像素值进行加权和相加而获得的值来执行重复计算的重复计算部分 到从现在使用的像素值 加权系数。
    • 27. 发明授权
    • Speech recognition system and data updating method
    • 语音识别系统和数据更新方法
    • US08538759B2
    • 2013-09-17
    • US12690291
    • 2010-01-20
    • Takeshi HommaHiroaki KokuboAkinori AsaharaHisashi Takahashi
    • Takeshi HommaHiroaki KokuboAkinori AsaharaHisashi Takahashi
    • G10L11/00G10L21/00
    • G01C21/3608G01C21/32G09B19/04G09B19/06G09B29/106G10L15/30G10L2015/228
    • It is provided a speech recognition system installed in a terminal coupled to a server via a network. The terminal holds map data including a landmark. The speech recognition system manages recognition data including a word corresponding to a name of the landmark, and sends update area information and updated time to the server. The server generates, when recognition data of the area of the update area information sent from the terminal has been changed after updated time, difference data between latest recognition data and recognition data of the update area information at a time of the updated time, and sends the generated difference data and map data of the update area information to the terminal. The terminal updates the map data based on the map data sent from the server. The speech recognition system updates the recognition data managed by the terminal based on the difference data.
    • 提供了一种安装在通过网络耦合到服务器的终端中的语音识别系统。 终端保存包括地标的地图数据。 语音识别系统管理包括与地标的名称对应的单词的识别数据,并向服务器发送更新区域信息和更新时间。 当在更新时间之后,从终端发送的更新区域信息的区域的识别数据被更新时,服务器生成最新识别数据与更新区域信息的识别数据之间的差数据,并发送 生成的差分数据和更新区域信息的映射数据到终端。 终端根据从服务器发送的地图数据更新地图数据。 语音识别系统基于差分数据更新由终端管理的识别数据。