Ultrasound analysis method and device

    公开(公告)号:US12178653B2

    公开(公告)日:2024-12-31

    申请号:US17430600

    申请日:2020-02-14

    Abstract: The invention provides an ultrasound data processing method (30) for detecting presence of an intravascular object in a vessel lumen based on analysis of acquired intravascular ultrasound data of the lumen. The method comprises receiving (32) data comprising multiple frames, and each frame containing data for a plurality of radial lines, corresponding to different circumferential positions around the IVUS device body, and reducing (34) the data to a single representative value for each radial line in each frame. These representative values are subsequently processed to derive (36) values for at least each frame representative of a probability of presence of an object within the given frame. Based on the probability values, a region within the data occupied by an intravascular object, for instance a consecutive set of frames occupied by an object, is determined (38).

    Methods and systems for ultrasound contrast enhancement

    公开(公告)号:US11547389B2

    公开(公告)日:2023-01-10

    申请号:US16647833

    申请日:2018-09-13

    Abstract: Systems and methods for suppressing off-axis sidelobes and/or clutter, near-field reverberation clutter, and/or grating lobe contributions are disclosed. A dual apodization with median (DAM) filtering technique is disclosed. The dual apodization technique may include summing aligned channel data with apodization functions (406, 412, 414) with complementary apertures applied. Median values for a zero function (RF3) and the resulting signals (RF1, RF2) from the complementary apertures are determined to generate a median value signal (416, MVS). The median value signal is used to generate an ultrasound image with enhanced image contrast. A method of image smoothing of the ultrasound image with enhanced image contrast is also disclosed. The smoothed image may include low frequency components of the ultrasound image with enhanced image contrast and high frequency components of an original image.

    Display device with free focus capability

    公开(公告)号:US09813695B2

    公开(公告)日:2017-11-07

    申请号:US14356639

    申请日:2012-10-30

    CPC classification number: H04N13/302 H04N13/144 H04N13/307

    Abstract: A display device (40) comprising: a display panel (41) comprising a set of pixels (41R, 41L) the pixels being spatially distributed over the display panel, and each pixel being for providing a light output, the set of pixels comprising a plurality of different subsets (411) of pixels, each subset of pixels comprising one or more pixels of the set of pixels, an imaging unit (42) arranged for imaging the one or more pixels of a subset of pixels to form pixel images on a plurality of view areas on an imaginary plane located at a first distance in front of the display, the plurality of view areas not overlapping each other, with at least one pixel image of each one of the different subsets of pixels overlapping on a same one of the plurality of view areas, the imaginary plane comprising an imaginary circle having the diameter of the pupil of an eye, and the imaginary circle enclosing at least a part of at least two of the plurality of view areas, where the at least two of the plurality of view areas at least partly enclosed within the imaginary circle differ from each other with respect to at least one of the pixel images therein. The display system may be for one eye only or for two eyes of a viewer or for more eyes of more viewers.

    Method and apparatus for determining anatomic properties of a patient
    17.
    发明授权
    Method and apparatus for determining anatomic properties of a patient 有权
    用于确定患者的解剖特性的方法和装置

    公开(公告)号:US09538955B2

    公开(公告)日:2017-01-10

    申请号:US14353104

    申请日:2012-10-09

    Abstract: A method is disclosed for determining anatomical properties of a patient, the patient having an oral cavity and a throat, comprising a) projecting at least one structured light pattern into the patient's oral cavity; b) detecting at least one reflected light pattern, each of the reflected light patterns emanating from reflection of a corresponding projected structured light pattern; c) analysing the at least one reflected structured light pattern in view of the at least one structured light pattern, thereby determining anatomical properties of the patient; and an associated imaging device.

    Abstract translation: 公开了一种用于确定患者的解剖学特性的方法,患者具有口腔和喉部,包括:a)将至少一个结构化光图案投射到患者的口腔中; b)检测至少一个反射光图案,每个反射光图案由相应的投影结构光图案的反射发出; c)鉴于所述至少一个结构化光图案分析所述至少一个反射结构光图案,从而确定所述患者的解剖学特性; 和相关联的成像装置。

    Light detection system and method
    18.
    发明授权
    Light detection system and method 有权
    光检测系统及方法

    公开(公告)号:US09479251B2

    公开(公告)日:2016-10-25

    申请号:US14426821

    申请日:2013-09-02

    CPC classification number: H04B10/116 H04B10/114 H05B33/0863 H05B37/0272

    Abstract: There is provided a method for detecting modulated light comprising: receiving a set of images acquired by means of a rolling shutter camera having image acquisition settings comprising a frame rate, fframe, and a line rate, fline; identifying in consecutive frames of said images—a pattern governed by the ratio between a modulation frequency, fc, of a modulated light source and the line rate, fline, and—between consecutive frames a spatial shift of said pattern governed by the ratio between said modulation frequency fc, and said frame rate, fframe; and providing based on said pattern and spatial shift thereof, an estimate of the modulated light amplitude from said light source.

    Abstract translation: 提供了一种用于检测调制光的方法,包括:接收通过具有包括帧速率f帧和线速率的图像采集设置的滚动快门摄像机获取的一组图像; 在所述图像的连续帧中识别由调制光源的调制频率fc与线速率之间的比率以及相邻帧之间的比率控制的图案,所述图案的空间偏移由所述 调制频率fc和所述帧速率fframe; 并且基于所述图案和空间偏移提供来自所述光源的调制光振幅的估计。

    Modulation of light emitted by a lighting device, using plurality of different modulation periods
    19.
    发明授权
    Modulation of light emitted by a lighting device, using plurality of different modulation periods 有权
    调制由照明装置发射的光,使用多个不同的调制周期

    公开(公告)号:US09363857B2

    公开(公告)日:2016-06-07

    申请号:US14372554

    申请日:2013-01-14

    CPC classification number: H05B33/0821 H04B10/116 H05B37/0272

    Abstract: The possibility to emit and detect coded light, whereby data is modulated into the light, is known. According to one aspect of the present disclosure, to reduce the risk of the modulation going undetected due to possible frequency blind spots in the detection spectrum, the lighting device (2a, 2b, 2c) is arranged such that the frequency of its emitted modulated light (3a, 3b, 3c) shivers around a base, or center, frequency. For example the modulated light (3a, 3b, 3c) may be transmitted using pulse-width-modulation, and the resulting pulse-width-modulation light signal (3a, 3b, 3c) may thus have a period that fluctuates around the base period (T). The parameters determining the shivering of the modulated light (3a, 3b, 3c) may be chosen such that visible flicker in the emitted modulated light (3a, 3b, 3c) is avoided. According to another aspect, the lighting device (2a, 2b, 2c) emits with a plurality of different modulation frequencies simultaneously.

    Abstract translation: 已知将发射和检测编码光,从而将数据调制到光中的可能性。 根据本公开的一个方面,为了降低由于检测光谱中可能的频率盲点而导致的调制不被检测的风险,照明装置(2a,2b,2c)被布置成使得其发射的调制光的频率 (3a,3b,3c)围绕基座或中心频率颤动。 例如,可以使用脉冲宽度调制来发送调制光(3a,3b,3c),并且由此产生的脉冲宽度调制光信号(3a,3b,3c)可以具有在基本周期周围波动的周期 (T)。 可以选择确定调制光(3a,3b,3c)的发抖的参数,使得避免发射的调制光(3a,3b,3c)中的可见闪烁。 根据另一方面,照明装置(2a,2b,2c)同时以多个不同的调制频率发射。

    Controlling light source(s) via a portable device
    20.
    发明授权
    Controlling light source(s) via a portable device 有权
    通过便携式设备控制光源

    公开(公告)号:US09247620B2

    公开(公告)日:2016-01-26

    申请号:US14424542

    申请日:2013-08-08

    Abstract: A method of controlling a light source (105) via a handheld computing device (110) is disclosed. The method comprises receiving an input produced by one or more sensors of the handheld computing device, the input being indicative of a current orientation of the handheld computing device. The method further comprises determining, based at least in part on the input, that the handheld computing device is in a predefined triggering orientation, e.g. in a generally horizontal orientation. In response to so determining, one or more frames of image data are acquired via an image sensor connected to the handheld computing device (110). The method further comprises obtaining an identifier of the light source, e.g. from information encoded into light emitted by the light source (105), having determined that the one or more frames of image data comprise image data representative of the light source (105). The method further comprises transmitting to the light source (105) a command indicative of a desired light setting for the light source (105), which desired light setting may for example have been provided via user input or may be a predefined setting retrieved from memory. A handheld computing device (110) and a lighting system (100) are also disclosed.

    Abstract translation: 公开了一种通过手持计算设备(110)控制光源(105)的方法。 该方法包括接收由手持计算设备的一个或多个传感器产生的输入,该输入指示手持计算设备的当前方位。 该方法还包括至少部分地基于输入来确定手持计算设备处于预定义的触发方向,例如, 在大致水平的方向。 响应于这样的确定,经由连接到手持计算设备(110)的图像传感器获取一帧或多帧图像数据。 该方法还包括获得光源的标识符,例如, 从被编码为由光源(105)发射的光的信息中,确定图像数据的一个或多个帧包括表示光源(105)的图像数据。 该方法还包括向光源(105)发送指示用于光源(105)的期望的光设置的命令,例如可以经由用户输入提供期望的光设置,或者可以是从存储器检索的预定义设置 。 还公开了一种手持计算设备(110)和照明系统(100)。

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