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公开(公告)号：US12073578B2
公开(公告)日：2024-08-27
申请号：US18307387
申请日：2023-04-26
发明人： Yicheng Wu , Vivek Boominathan , Huaijin Chen , Aswin C. Sankaranarayanan , Ashok Veeraraghavan
IPC分类号： G06T7/55 , H04N13/111 , H04N13/122 , H04N13/128 , H04N13/229
CPC分类号： G06T7/55 , H04N13/111 , H04N13/122 , H04N13/128 , H04N13/229 , G06T2200/08
摘要： A method for a passive single-viewpoint 3D imaging system comprises capturing an image from a camera having one or more phase masks. The method further includes using a reconstruction algorithm, for estimation of a 3D or depth image.
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公开(公告)号：US10230874B2
公开(公告)日：2019-03-12
申请号：US15133496
申请日：2016-04-20
摘要： An imaging device includes: a control unit configured to control an output of an irradiation signal including an irradiation code used for control of a pattern of emission of irradiation light and an output of a reference signal including a reference code indicating a pattern used for detection of a correlation with reception light including reflection light of the irradiation light; and an imaging element configured to output a pixel signal indicating a correlation between the reception light and the reference signal, wherein one of the irradiation code and the reference code is a code in which weighted adding of a plurality of unit codes, in which a phase of a basic code having an impulse cross-correlation with the other code is shifted for a different shift amount, is performed.
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公开(公告)号：US20160143538A1
公开(公告)日：2016-05-26
申请号：US14952346
申请日：2015-11-25
IPC分类号： A61B5/00
CPC分类号： A61B5/0077 , A61B5/02416 , A61B5/02427 , A61B5/1114 , A61B5/7221 , A61B5/7235 , A61B5/7253 , G06K9/00771 , G06K9/2027 , G06K9/4642 , G06K9/4661
摘要： A system for estimating a photoplethysmogram waveform of a target includes an image processor configured to obtain images of the target and a waveform analyzer. The waveform analyzer is configured to determine a weight of a portion of the target. The weight is based on a time variation of a light reflectivity of the portion of the target. The time variation of the light reflectivity of the target is based on the images. The waveform analyzer is further configured to estimate a PPG waveform of the target based on the weight of the portion and the time variation of the light reflectivity of the portion.
摘要翻译： 用于估计目标的光电容积图波形的系统包括被配置为获得目标图像和波形分析器的图像处理器。 波形分析器被配置为确定目标的一部分的权重。 重量基于目标部分的光反射率的时间变化。 目标的光反射率的时间变化基于图像。 波形分析器还被配置为基于该部分的重量和该部分的光反射率的时间变化来估计目标的PPG波形。
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公开(公告)号：US20230410341A1
公开(公告)日：2023-12-21
申请号：US18307387
申请日：2023-04-26
发明人： Yicheng Wu , Vivek Boominathan , Huaijin Chen , Aswin C. Sankaranarayanan , Ashok Veeraraghavan
IPC分类号： G06T7/55 , H04N13/122 , H04N13/111 , H04N13/128 , H04N13/229
CPC分类号： G06T7/55 , H04N13/122 , H04N13/111 , H04N13/128 , H04N13/229 , G06T2200/08
摘要： A method for a passive single-viewpoint 3D imaging system comprises capturing an image from a camera having one or more phase masks. The method further includes using a reconstruction algorithm, for estimation of a 3D or depth image.
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公开(公告)号：US20200349729A1
公开(公告)日：2020-11-05
申请号：US16865229
申请日：2020-05-01
发明人： Yicheng Wu , Vivek Boominathan , Hauijin Chen , Aswin C. Sankaranarayanan , Ashok Veeraraghavan
IPC分类号： G06T7/55 , H04N13/122 , H04N13/229 , H04N13/111 , H04N13/128
摘要： A method for a passive single-viewpoint 3D imaging system comprises capturing an image from a camera having one or more phase masks. The method further includes using a reconstruction algorithm, for estimation of a 3D or depth image.
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公开(公告)号：US10753869B2
公开(公告)日：2020-08-25
申请号：US16321309
申请日：2017-07-28
发明人： Ashok Veeraraghavan , Richard Baraniuk , Jacob Robinson , Vivek Boominathan , Jesse Adams , Benjamin Avants
IPC分类号： G01N21/47 , A61B5/00 , G06K9/00 , G02B21/36 , G01N21/64 , G01N21/76 , G06T7/55 , G02B21/16 , A61B5/1172 , G02B21/00 , A61B90/20
摘要： In one aspect, embodiments disclosed herein relate to a lens-free imaging system. The lens-free imaging system includes: an image sampler, a radiation source, a mask disposed between the image sampler and a scene, and an image sampler processor. The image sampler processor obtains signals from the image sampler that is exposed, through the mask, to radiation scattered by the scene which is illuminated by the radiation source. The image sampler processor then estimates an image of the scene based on the signals from the image sampler, processed using a transfer function that relates the signals and the scene.
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公开(公告)号：US20160316112A1
公开(公告)日：2016-10-27
申请号：US15133496
申请日：2016-04-20
IPC分类号： H04N5/222
CPC分类号： H04N5/2226 , G01S17/107 , G01S17/32 , G01S17/89
摘要： An image or a range image in a range at an arbitrary distance is acquired.An imaging device includes: a control unit configured to control an output of an irradiation signal including an irradiation code used for control of a pattern of emission of irradiation light and an output of a reference signal including a reference code indicating a pattern used for detection of a correlation with reception light including reflection light of the irradiation light; and an imaging element configured to output a pixel signal indicating a correlation between the reception light and the reference signal, wherein one of the irradiation code and the reference code is a code in which weighted adding of a plurality of unit codes, in which a phase of a basic code having an impulse cross-correlation with the other code is shifted for a different shift amount, is performed. The present technology can be applied, for example, to a camera that photographs a range image.
摘要翻译： 一种成像装置，包括：控制单元，被配置为控制包括用于控制照射光发射模式的照射码的照射信号的输出和包括指示用于检测的图案的参考码的参考信号的输出 与包括照射光的反射光的接收光的相关性; 以及成像元件，被配置为输出表示所述接收光与所述参考信号之间的相关性的像素信号，其中所述照射代码和所述参考代码之一是其中加法相加多个单位代码的代码，其中相位 执行具有与其他代码的脉冲互相关的基本代码移位不同的移位量。 本技术可以应用于例如照相范围图像的照相机。
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公开(公告)号：US11676294B2
公开(公告)日：2023-06-13
申请号：US16865229
申请日：2020-05-01
发明人： Yicheng Wu , Vivek Boominathan , Huaijin Chen , Aswin C. Sankaranarayanan , Ashok Veeraraghavan
IPC分类号： G06T7/55 , H04N13/122 , H04N13/111 , H04N13/128 , H04N13/229
CPC分类号： G06T7/55 , H04N13/111 , H04N13/122 , H04N13/128 , H04N13/229 , G06T2200/08
摘要： A method for a passive single-viewpoint 3D imaging system comprises capturing an image from a camera having one or more phase masks. The method further includes using a reconstruction algorithm, for estimation of a 3D or depth image.
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公开(公告)号：US11178349B2
公开(公告)日：2021-11-16
申请号：US15547235
申请日：2016-01-29
发明人： Aswin Sankaranarayanan , Ashok Veeraraghavan , Lisa A. Hendricks , Richard Baraniuk , Ali Ayremlou , M. Salman Asif
摘要： A lens-free imaging system for generating an image of a scene includes an electromagnetic (EM) radiation sensor; a mask disposed between the EM radiation sensor and the scene; an image processor that obtains signals from the EM radiation sensor while the EM radiation sensor is exposed to the scene; and estimates the image of the scene based on, at least in part, the signals and a transfer function between the scene and the EM radiation sensor.
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10.发明授权公开(公告)号：US10694123B2
公开(公告)日：2020-06-23
申请号：US16035629
申请日：2018-07-14
发明人： Oliver Strider Cossairt , Jason Holloway , Ashok Veeraraghavan , Manoj Kumar Sharma , Yicheng Wu
摘要： A method for imaging objects includes illuminating an object with a light source of an imaging device, and receiving an illumination field reflected by the object. An aperture field that intercepts a pupil of the imaging device is an optical propagation of the illumination field at an aperture plane. The method includes receiving a portion of the aperture field onto a camera sensor, and receiving a sensor field of optical intensity. The method also includes iteratively centering the camera focus along the Fourier plane at different locations to produce a series of sensor fields and stitching together the sensor fields in the Fourier domain to generate an image. The method also includes determining a plurality of phase information for each sensor field in the series of sensor fields, applying the plurality of phase information to the image, receiving a plurality of illumination fields reflected by the object, and denoising the intensity of plurality of illumination fields using Fourier ptychography.
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