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    • 95. 发明授权
    • Medical diagnostic ultrasound system and method for transform ultrasound
processing
    • 医学诊断超声系统及其变换超声处理方法
    • US6042545A
    • 2000-03-28
    • US200021
    • 1998-11-25
    • John A. HossackSamuel H. Maslak
    • John A. HossackSamuel H. Maslak
    • G01S15/89A61B8/00
    • G01S15/8977
    • The preferred embodiment includes a method and system for processing ultrasound data during or after compression. Various compression algorithms, such as JPEG compression, are used to transfer ultrasound data. The ultrasound data may include image (i.e. video data) or data obtained prior to scan conversion, such as detected acoustic line data or data complex in form. Compression algorithms typically include a plurality of steps to transform and quantize the ultrasound data. Various processes in addition to compression may be performed as part of one or more of the compression steps. Furthermore, various ultrasound system processes typically performed on uncompressed ultrasound data may be performed using compressed or partially compressed ultrasound data. Operation on compressed or partially compressed data may more efficiently provide processed data for generation of an image. Fewer operations are required by one or more processors when operating on compressed or partially compressed data than for uncompressed or non-compressed data. In one embodiment, partially compressed data may be input into a look-up table for contrast enhancement. In another embodiment, partially compressed data is high passed filtered.
    • 优选实施例包括用于在压缩期间或之后处理超声数据的方法和系统。 使用各种压缩算法(例如JPEG压缩)来传送超声数据。 超声数据可以包括图像(即视频数据)或扫描转换之前获得的数据,例如检测到的声线数据或形式的数据复合体。 压缩算法通常包括多个步骤来变换和量化超声数据。 作为一个或多个压缩步骤的一部分,可以执行除压缩之外的各种处理。 此外,可以使用压缩或部分压缩的超声数据来执行通常在未压缩超声数据上执行的各种超声系统处理。 在压缩或部分压缩的数据上的操作可以更有效地提供用于生成图像的处理数据。 当对压缩或部分压缩的数据进行操作时,一个或多个处理器需要更少的操作,而不是未压缩或非压缩数据。 在一个实施例中,可以将部分压缩的数据输入到用于对比度增强的查找表中。 在另一个实施例中,部分压缩的数据被高通过滤。
    • 99. 发明授权
    • Apparatus and method for image processing including one-dimensional
clean approximation
    • 包括一维清晰近似的图像处理装置和方法
    • US5299577A
    • 1994-04-05
    • US993684
    • 1992-12-21
    • Fredrick B. BrownNathan Cohen
    • Fredrick B. BrownNathan Cohen
    • G01S7/52G01S15/89G06T5/20A61B8/00
    • G01S7/52028G01S15/8977G01S7/52026G01S7/52047G01S7/52049G01S7/52077G06T5/20
    • An apparatus (10) and method for real-time reduction of noise components from echographic images. A plurality of scan line processor circuits (22) are connected through an interface (18) to an echographic imaging apparatus (20), such as an ultrasonic imaging device. Each scan line processor circuit (22) receives a row of dirty image signals (24) and simultaneously and independently performs a one-dimensional side lobe subtraction of noise components (a deconvolution of the dirty beam pattern) from the row of signals using a CLEAN algorithm. After subtraction, the resulting clean components are convolved by the scan line processor circuits (22) with a clean beam pattern to smooth the image for display. Finally, the clean image signals optionally can be masked by a masking multiplier (52) to remove processing artifacts and compressed by a compression device (56) to enhance contrast. The resulting masked and compressed clean image signals (26) are then displayed on a display device (17,20). A sufficient number of scan line processor circuits (22), relative to the number of rows in a complete image frame, are provided to effect real-time processing of image frames.
    • 一种用于从回波图像中实时降低噪声分量的装置(10)和方法。 多个扫描线处理器电路(22)通过接口(18)连接到例如超声成像设备的回波成像设备(20)。 每个扫描线处理器电路(22)接收一排脏图像信号(24),并且使用CLEAN同时且独立地执行来自信号行的噪声分量(脏波束图案的去卷积)的一维旁瓣减法 算法。 在减法之后,所得到的清洁组件被扫描线处理器电路(22)用干净的波束图案进行卷积,以使图像平滑以进行显示。 最后,干净的图像信号可选择地被掩蔽乘法器(52)掩蔽,以消除处理假象并被压缩装置(56)压缩以增强对比度。 然后,在显示装置(17,20)上显示所产生的被屏蔽和压缩的清洁图像信号(26)。 提供相对于完整图像帧中的行数的足够数量的扫描线处理器电路(22)来实现图像帧的实时处理。