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公开(公告)号：US4722345A
公开(公告)日：1988-02-02
申请号：US796519
申请日：1985-11-08
申请人： Shinichirou Ueno , Hiroshi Fukukita , Koetsu Saito , Tsutomu Yano
发明人： Shinichirou Ueno , Hiroshi Fukukita , Koetsu Saito , Tsutomu Yano
CPC分类号： G09G5/14 , G01S7/52063 , G01S7/52074 , G01S7/531 , A61B8/4281
摘要： In an ultrasonic imaging system echo signals representative of the amplitude of ultrasonic energy returning along a plurality of angularly spaced paths are sampled at a constant speed and stored into a buffer memory. At a speed inversely proportional to the cosine of the angle of said path with respect to a reference line the echo samples are read out of the buffer memory and written into a specified area of a graphic memory at a constant speed in the direction of the rows thereof and at a speed proportional to the tangent of the angle of the path with respect to the reference line in the direction of the columns thereof. At a constant speed echo samples are read out of the graphic memory in the directions of the rows and columns and applied to a monitor to be displayed in a raster scan field.
摘要翻译： 在超声波成像系统中，以恒定速度采样表示沿多个角度间隔路径返回的超声波能量的振幅的回波信号并存储到缓冲存储器中。 以与所述路径的角度相对于参考线的余弦成反比的速度，将回波样本从缓冲存储器中读出，并以恒定的速度在行的方向上写入图形存储器的指定区域 并且以与其相对于基准线在其方向上的路径的角度的切线成正比的速度。 在恒定速度下，回波样本从行和列的方向读出图形存储器，并应用于要在光栅扫描场中显示的监视器。
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公开(公告)号：US4300215A
公开(公告)日：1981-11-10
申请号：US156959
申请日：1980-06-06
申请人： Charles H. Jones
发明人： Charles H. Jones
CPC分类号： G01S15/8902 , G01S7/531
摘要： A conical acoustic lens in conjunction with a ring of transducer elements located on a circle disposed above the lens is utilized to form a plurality of radial beams for imaging a target area beneath the apparatus. The transducers may occupy the fully 360.degree. of the circle or a sector less than 360.degree. in which the case the apparatus may be rotated to give full 360.degree. coverage.
摘要翻译： 结合位于设置在透镜上方的圆上的换能器元件环的锥形声透镜被用于形成用于对设备下方的目标区域进行成像的多个径向光束。 传感器可以占据圆周的360°或小于360°的扇形，在这种情况下，设备可以旋转，以达到360°的全面覆盖。
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3.发明公开公开(公告)号：US20240210547A1
公开(公告)日：2024-06-27
申请号：US18557178
申请日：2022-04-25
发明人： Robert CROOK
摘要： A method of filtering an acoustic B-scan (500) for passive detection of an object (106, 108) underwater comprising ensonifying (400) a region (104) of an underwater environment (102) and receiving (402) acoustic signals from the ensonified region (104) of the underwater environment (102), the received acoustic signals corresponding to a plurality of sonar beams. The method also comprises generating (404) the acoustic B-scan (500) from the received acoustic signals and pre-processing (406-414) the acoustic B-scan (500) to remove historic artefacts and mitigate influence of reverberant energy. Energy content is then scored (416) in respect of the pre-processed acoustic B-scan (524) to provide a plurality of energy scores and at least one local maximum (200) of the plurality of energy scores is; identified (418). A predetermined criterion is then applied (808) to a local maximum (700) of the at least one local maximum (700) identified.
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公开(公告)号：US20180246194A1
公开(公告)日：2018-08-30
申请号：US15865620
申请日：2018-01-09
发明人： Kenji MURAKAMI
CPC分类号： G01S7/52085 , A61B8/4477 , A61B8/5269 , G01S7/52077 , G01S7/52079 , G01S7/531 , G01S15/8915
摘要： An ultrasonic image processing apparatus includes pixels arranged in a first axis direction corresponding to a scanning direction of an ultrasonic wave transmitted to an object and a second axis direction corresponding to a distance direction in which the ultrasonic wave propagates. Each of the pixels has coordinates based on a reflection position of the ultrasonic wave and a pixel value based on a strength of a reflected wave of the ultrasonic wave. The ultrasonic image processing apparatus includes: a speckle pattern reduction processor setting a size of a filter according to a coordinate on the second axis of a pixel of interest included in the ultrasonic image and performing filter processing using the filter to reduce a speckle pattern in the pixel of interest; and an edge information calculator calculating edge information for the pixel of interest in which the speckle pattern has been reduced.
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公开(公告)号：US4468747A
公开(公告)日：1984-08-28
申请号：US340663
申请日：1982-01-19
申请人： Steven C. Leavitt , Hugh G. Larsen , Barry F. Hunt
发明人： Steven C. Leavitt , Hugh G. Larsen , Barry F. Hunt
CPC分类号： G01S7/531 , G01S7/52063 , G06T1/00 , G06T3/4007
摘要： Apparatus for displaying the information represented by data samples occurring along radial lines at display points arranged in rows and columns wherein intermediate interpolated data values are derived at the intersections of a row containing a display point for which a final data value is sought with radii on either side of the display point and interpolating the first and second intermediate interpolated data values so as to derive a final interpolated data value at the angular position of the display point with respect to the radii.
摘要翻译： 用于显示沿着径向线发生的数据样本所表示的信息的装置，其以排和列排列的显示点出现，其中在包含要寻求最终数据值的显示点的行的交点处导出中间内插数据值， 并且内插第一和第二中间内插数据值，以便在显示点相对于半径的角位置导出最终内插数据值。
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公开(公告)号：US4428059A
公开(公告)日：1984-01-24
申请号：US411398
申请日：1982-08-25
申请人： James M. Gessert
发明人： James M. Gessert
CPC分类号： G01S7/531 , G06F17/175
摘要： There has been provided, a digital circuit for interpolating the intensity values between adjacent pulsed data signals. The interpolation includes, effectively, providing a plurality of shades of gray between adjacent received data. The interpolation data is applied to the display means to effectively fill the interstices between the adjacent image lines. When thus applied, the resultant image is one of a smooth transition between adjacent analog data thereby constituting a more readily readable and desirable display of the image.
摘要翻译： 已经提供了用于内插相邻脉冲数据信号之间的强度值的数字电路。 该插值实际上在相邻的接收数据之间提供多个灰色阴影。 内插数据被施加到显示装置以有效地填充相邻图像行之间的间隙。 当这样应用时，所得图像是相邻模拟数据之间的平滑过渡之一，从而构成更容易读取和期望的图像显示。
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公开(公告)号：US4220969A
公开(公告)日：1980-09-02
申请号：US934058
申请日：1978-08-15
申请人： Kazuhiko Nitadori
发明人： Kazuhiko Nitadori
CPC分类号： G01S7/298 , G01S7/5206 , G01S7/531
摘要： There is disclosed a visual scan converter which accepts digitalized video data in a polar coordinates system from a source such as a radar receiver, a sonar, or an ultrasonic imaging system, and converts the data format to make it suitable for presentation on a cathode ray tube in a standard television or other orthogonal raster at flicker free rates. The input data in a polar coordinates system is first stored in a digital memory, which is read with the orthogonal coordinates system. In reading said digital memory, an orthogonal address generated by a raster address generator is converted to a polar address, which is applier applied to said digital memory. An interpolation is performed for the outputs of the digital memory.
摘要翻译： 公开了一种视觉扫描转换器，其从诸如雷达接收器，声纳或超声波成像系统的源接收极坐标系统中的数字化视频数据，并且转换数据格式使其适合于在阴极射线 以标准电视或其他正交光栅以无闪烁速率管。 首先将极坐标系中的输入数据存储在数字存储器中，该数字存储器用正交坐标系读出。 在读取所述数字存储器时，由光栅地址生成器生成的正交地址被转换为极地址，该地址是应用于所述数字存储器的施加器。 对数字存储器的输出执行内插。
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公开(公告)号：US5091721A
公开(公告)日：1992-02-25
申请号：US289161
申请日：1988-12-22
申请人： Alfred S. Hamori
发明人： Alfred S. Hamori
IPC分类号： G06F3/153 , G01S7/531 , G01S7/62 , G06T11/00 , G09G5/393 , G10L11/00 , G10L11/02 , G10L15/04
摘要： A display generator (23) which converts acoustic sensor data stored in a bulk memory (19) into data which is displayed on a raster-type monitor. The display generator (23) provides for pixel processing and manipulation capabilities supported by a pixel formatter (65), a pixel mover (69), and an acoustic controller (57) with local memory (55). The display generator (23) converts acoustic data from a predetermined sensor format into a variety of display formats compatible with the raster-type monitor. The acoustic controller is a pixel build algorithm processor used to initialize and monitor the display generator (23) in real time. It provides for pixel address generation to construct the images in the bit mapped memory (25). The formatter (65) is an independent processor having its own controller and control algorithm processor which provides for parallel processing of the data in parallel with and independent from the operations of the pixel mover (69) and controller (57). Consequently, the display generator (23) provides for parallel pipelining of data from the bulk memory (19) to the bit mapped memory (25). The display generator (23) also permits rapid updates of the displayed image without reconstructing the entire image utilizing the pixel mover (69). The pixel mover (69) updates selected areas of the image stored in the bit mapped memory (25) by operating on multiple pixels at a time, in particular, multiple blocks of pixels comprising sixteen pixels each.
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公开(公告)号：US4862427A
公开(公告)日：1989-08-29
申请号：US137525
申请日：1987-12-22
申请人： David Almagor , John M. Peters
发明人： David Almagor , John M. Peters
CPC分类号： G01S15/87 , G01S15/04 , G01S7/003 , G01S7/531 , G01S7/536 , G01S7/6227 , G01S7/6263
摘要： A continuous-transmission frequency-modulated (CTFM) scan converted sonar with improved capability for detecting swimmers, miniature submarines and other small intruders in harbors and inlets, and adjacent offshore structures. The system is microprocessor based and menu driven from an operator interactive touch screen. The system utilizes a fast fourier transform (FFT) based frequency analyzer for range discrimination. An area moving target indicator (AMTI) portion of the system cancels echo returns from stationary objects that otherwise mask the echo return of the moving targets. The AMTI causes the system to survey the search area for a number of consecutive scans and store the data. On successive scans, only target information that differs from the stored target map is displayed, thereby reducing clutter caused by surrounding terrain. The AMTI can activate an audio alarm, transmit a serial data alarm message, start a video recorder and annotate the system display to identify the bearing and range of the moving target that has been detected.
摘要翻译： 连续发射频率调制（CTFM）扫描转换声纳，具有更好的检测游泳者，微型潜艇和其他小型入侵者在港口和入口以及相邻海上结构的能力。 该系统是基于微处理器和菜单从操作员交互式触摸屏驱动的。 该系统采用基于快速傅里叶变换（FFT）的频率分析仪进行范围辨识。 系统的区域移动目标指示器（AMTI）部分从静止物体取消回波返回，否则屏蔽移动目标的回波返回。 AMTI使得系统对多个连续扫描的搜索区域进行调查并存储数据。 在连续扫描中，仅显示与存储的目标图不同的目标信息，从而减少周围地形引起的杂波。 AMTI可以激活音频报警，发送串行数据报警信息，启动录像机并注释系统显示，以识别已检测到的移动目标的方位和范围。
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公开(公告)号：US4387365A
公开(公告)日：1983-06-07
申请号：US264108
申请日：1981-05-15
摘要： A digital scan converter is disclosed wherein signal information supplied by a sector scanning surveillance system relative to a polar coordinate system is converted to a signal for driving a television-type display or other Cartesian coordinate device by: (a) sampling the signal associated with each consecutive scanning path of the surveillance system at a rate determined by the azimuthal angle that defines the scanning path of interest; (b) storing each set of signal samples as a column of data in a rectangular memory array; (c) accessing the stored data on a row-by-row basis; and (d) utilizing a previously determined mapping strategy to cause each accessed signal sample to form a segment of a line of display within the Cartesian-formulated display devices so that the length of the segment formed by each signal sample is determined by the row and column address of the storage location that is associated therewith when forming a television compatible signal, each signal sample dictates video signal level during a portion of a corresponding horizontal sweep period that is determined by the mapping strategy.
摘要翻译： 公开了一种数字扫描转换器，其中由扇区扫描监视系统相对于极坐标系提供的信号信息被转换为用于驱动电视型显示器或其他笛卡尔坐标装置的信号，其方法是：（a）对与每个 以由限定感兴趣的扫描路径的方位角确定的速率的监视系统的连续扫描路径; （b）将每组信号样本作为数据列存储在矩形存储器阵列中; （c）逐行访问存储的数据; 以及（d）利用先前确定的映射策略来使每个被访问的信号样本在笛卡尔配方的显示设备内形成显示行的一段，使得由每个信号样本形成的段的长度由行和 在形成电视兼容信号时与其相关联的存储位置的列地址，每个信号样本在由映射策略确定的相应的水平扫描周期的一部分期间指定视频信号电平。
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