公开(公告)号：US08531650B2

公开(公告)日：2013-09-10

申请号：US12499758

申请日：2009-07-08

Applicant: Daniel Feldkhun ,  Benjamin Braker ,  Eric Daniel Moore

Inventor： Daniel Feldkhun ,  Benjamin Braker ,  Eric Daniel Moore

IPC: G01C3/08

CPC classification number: G01B11/005 ,  G01B11/2518 ,  G01B11/2527 ,  G01B11/2536 ,  G01C3/08 ,  G01S7/4815 ,  G01S7/4818 ,  G01S7/484 ,  G01S7/486 ,  G01S7/499 ,  G01S17/48 ,  G01S17/89

Abstract: Methods, systems, and apparatuses are provided for estimating a location on an object in a three-dimensional scene. Multiple radiation patterns are produced by spatially modulating each of multiple first radiations with a distinct combination of one or more modulating structures, each first radiation having at least one of a distinct radiation path, a distinct source, a distinct source spectrum, or a distinct source polarization with respect to the other first radiations. The location on the object is illuminated with a portion of each of two or more of the radiation patterns, the location producing multiple object radiations, each object radiation produced in response to one of the multiple radiation patterns. Multiple measured values are produced by detecting the object radiations from the location on the object due to each pattern separately using one or more detector elements. The location on the object is estimated based on the multiple measured values.

Abstract translation: 提供了用于估计三维场景中对象上的位置的方法，系统和装置。 通过用一个或多个调制结构的不同组合空间调制多个第一辐射中的每一个产生多个辐射图，每个第一辐射具有不同的辐射路径，不同的源，不同的源光谱或不同的光源中的至少一个 相对于其他第一辐射的极化。 两个或多个辐射图案中的每一个的一部分被照射在物体上的位置，产生多个物体辐射的位置，响应于多个辐射图案之一产生的每个物体辐射。 通过使用一个或多个检测器元件分别由于每个图案检测来自物体上的位置的物体辐射来产生多个测量值。 基于多个测量值估计对象上的位置。

公开(公告)号：US20130088723A1

公开(公告)日：2013-04-11

申请号：US13645532

申请日：2012-10-05

Applicant: Daniel Feldkhun

Inventor： Daniel Feldkhun

IPC: G01B9/02

CPC classification number: G01B9/02041 ,  G01B9/02082 ,  G01B11/2441 ,  G01B11/25 ,  G01B21/045 ,  G02B21/004 ,  G02B27/0025 ,  G02B27/48

Abstract: Methods and systems are provided for suppressing speckle and/or diffraction artifacts in coherent structured illumination sensing systems. A coherent radiation pattern forms an interference pattern at an illumination image plane and illuminates an object. Radiation scattered or otherwise emitted by the object is detected to produce a signal, which is integrated in time. Coherent artifact suppression is attained by using a spatial modulator, such as an acousto-optic device, to vary a phase gradient at the illumination image plane during the signal integration time. Various embodiments are provided for purposes including without limitation: preserving the depth of field of the coherent illumination; using the same acousto-optic device for pattern generation and coherent artifact suppression; electronically controlling the effective spatial coherence of the illumination system; and reducing errors due to coherent artifacts in a laser-based three dimensional imaging system.

Abstract translation: 提供了用于抑制相干结构照明感测系统中斑点和/或衍射伪像的方法和系统。 相干辐射图形在照明像平面处形成干涉图案并照亮物体。 检测被物体散射或以其他方式发射的辐射，以产生一个在时间上集成的信号。 通过使用诸如声光装置的空间调制器在信号积分时间期间改变照明图像平面处的相位梯度来实现相干伪影抑制。 提供各种实施例用于包括但不限于：保持相干照明的景深的目的; 使用相同的声光装置进行图案生成和相干伪影抑制; 电子控制照明系统的有效空间相干性; 并且减少由于基于激光的三维成像系统中的相干伪影引起的误差。

公开(公告)号：US09921161B1

公开(公告)日：2018-03-20

申请号：US14991016

申请日：2016-01-08

Applicant: Daniel Feldkhun

Inventor： Daniel Feldkhun

IPC: H01J65/08 ,  G01N21/64 ,  G02B21/16 ,  G02B21/36

CPC classification number: G01N21/6458 ,  G02B21/0032 ,  G02B21/14 ,  G02B21/16 ,  G02B21/365 ,  G02B27/58

Abstract: Methods and systems are provided for estimating locations of sub-wavelength-sized emitters, which may be sparsely arrayed among inactive emitters, in one or more dimensions to synthesize a super-resolved image. The emitter emits light in response to structured illumination, which may be acousto-optically generated. The structured illumination is translated, and a detector, such as a camera pixel, senses the emitted linear or nonlinear response, producing a periodic signal. A processor computes a phase of the signal using phase shifting interferometry and uses it to estimate the emitter location with resolution finer than a quarter of the illumination wavelength. Modulation depth and/or amplitude of the signal may be used to estimate emitter size and/or evaluate location fidelity. Optical sectioning or extended depth of field may be provided by controlling spatial coherence of the illumination. Encoding and decoding emitter locations with non-periodic patterns is also described.

公开(公告)号：US09684076B1

公开(公告)日：2017-06-20

申请号：US14211488

申请日：2014-03-14

Applicant: Daniel Feldkhun

Inventor： Daniel Feldkhun

IPC: G01S17/89

CPC classification number: G01S17/89 ,  G01S7/4911 ,  G01S17/32

Abstract: Methods, systems, and apparatuses are provided for measuring and mapping ranges, reflectivities, and/or velocities of multiple locations on an object by illuminating the locations with uniquely frequency-encoded sensing beams, which may be generated using one or more acousto-optic devices. A detector is used to sense the interference of the sensing beams reflected from the object and one or more reference beams, which may be co-propagating with the sensing beams to/from the object and/or may be provided via a separate reference path. A processor is used to estimate lateral coordinates, ranges, reflectivities, and/or velocities of the illuminated locations based on the frequencies, phases, amplitudes, and Doppler shifts, respectively, of the corresponding spectral components of the temporal beat signal produced by the detector in response to the interference of the sensing and reference beams. The processor may also disambiguate the range at each measured location using a pair of closely-spaced spectral components.

公开(公告)号：US09310184B2

公开(公告)日：2016-04-12

申请号：US14500088

申请日：2014-09-29

Applicant: Daniel Feldkhun

Inventor： Daniel Feldkhun

IPC: G01B9/02 ,  G01B11/24 ,  G01B21/04 ,  G01B11/25 ,  G02B27/00 ,  G02B27/48 ,  G02B21/00

CPC classification number: G01B9/02041 ,  G01B9/02082 ,  G01B11/2441 ,  G01B11/25 ,  G01B21/045 ,  G02B21/004 ,  G02B27/0025 ,  G02B27/48

Abstract: Methods and systems are provided for suppressing speckle and/or diffraction artifacts in coherent structured illumination sensing systems. A coherent radiation pattern forms an interference pattern at an illumination image plane and illuminates an object. Radiation scattered or otherwise emitted by the object is detected to produce a signal, which is integrated in time. Coherent artifact suppression is attained by using a spatial modulator, such as an acousto-optic device, to vary a phase gradient at the illumination image plane during the signal integration time. Various embodiments are provided for purposes including without limitation: preserving the depth of field of the coherent illumination; using the same acousto-optic device for pattern generation and coherent artifact suppression; electronically controlling the effective spatial coherence of the illumination system; and reducing errors due to coherent artifacts in a laser-based three dimensional imaging system.

Abstract translation: 提供了用于抑制相干结构照明感测系统中斑点和/或衍射伪像的方法和系统。 相干辐射图形在照明像平面处形成干涉图案并照亮物体。 检测被物体散射或以其他方式发射的辐射，以产生一个在时间上集成的信号。 通过使用诸如声光装置的空间调制器在信号积分时间期间改变照明图像平面处的相位梯度来实现相干伪影抑制。 提供各种实施例用于包括但不限于：保持相干照明的景深的目的; 使用相同的声光装置进行图案生成和相干伪影抑制; 电子控制照明系统的有效空间相干性; 并且减少由于基于激光的三维成像系统中的相干伪影引起的误差。

公开(公告)号：US20150015891A1

公开(公告)日：2015-01-15

申请号：US14500088

申请日：2014-09-29

Applicant: Daniel Feldkhun

Inventor： Daniel Feldkhun

IPC: G01B9/02 ,  G01B11/24

CPC classification number: G01B9/02041 ,  G01B9/02082 ,  G01B11/2441 ,  G01B11/25 ,  G01B21/045 ,  G02B21/004 ,  G02B27/0025 ,  G02B27/48

Abstract: Methods and systems are provided for suppressing speckle and/or diffraction artifacts in coherent structured illumination sensing systems. A coherent radiation pattern forms an interference pattern at an illumination image plane and illuminates an object. Radiation scattered or otherwise emitted by the object is detected to produce a signal, which is integrated in time. Coherent artifact suppression is attained by using a spatial modulator, such as an acousto-optic device, to vary a phase gradient at the illumination image plane during the signal integration time. Various embodiments are provided for purposes including without limitation: preserving the depth of field of the coherent illumination; using the same acousto-optic device for pattern generation and coherent artifact suppression; electronically controlling the effective spatial coherence of the illumination system; and reducing errors due to coherent artifacts in a laser-based three dimensional imaging system.

Abstract translation: 提供了用于抑制相干结构照明感测系统中斑点和/或衍射伪像的方法和系统。 相干辐射图形在照明像平面处形成干涉图案并照亮物体。 检测被物体散射或以其他方式发射的辐射，以产生一个在时间上集成的信号。 通过使用诸如声光装置的空间调制器在信号积分时间期间改变照明图像平面处的相位梯度来实现相干伪影抑制。 提供各种实施例用于包括但不限于：保持相干照明的景深的目的; 使用相同的声光装置进行图案生成和相干伪影抑制; 电子控制照明系统的有效空间相干性; 并且减少由于基于激光的三维成像系统中的相干伪影引起的误差。

公开(公告)号：US08558998B2

公开(公告)日：2013-10-15

申请号：US13247610

申请日：2011-09-28

Applicant: Daniel Feldkhun ,  Kelvin H. Wagner

Inventor： Daniel Feldkhun ,  Kelvin H. Wagner

IPC: G01J1/36

CPC classification number: G01N21/6458 ,  G01N21/4795 ,  G02B21/06 ,  G02B27/0075

Abstract: Methods and systems are disclosed of sensing an object. A first radiation is spatially modulated to generate a structured second radiation. The object is illuminated with the structured second radiation such that the object produces a third radiation in response. Apart from any spatially dependent delay, a time variation of the third radiation is spatially independent. With a single-element detector, a portion of the third radiation is detected from locations on the object simultaneously. At least one characteristic of a sinusoidal spatial Fourier-transform component of the object is estimated from a time-varying signal from the detected portion of the third radiation.

Abstract translation: 公开了感测对象的方法和系统。 空间调制第一辐射以产生结构化的第二辐射。 用结构化的第二辐射照射物体，使得物体响应地产生第三辐射。 除了任何空间依赖的延迟之外，第三辐射的时间变化在空间上是独立的。 使用单元件检测器，同时从物体上的位置检测第三辐射的一部分。 根据来自第三辐射的检测部分的时变信号估计对象的正弦空间傅立叶变换分量的至少一个特征。

公开(公告)号：US20120257197A1

公开(公告)日：2012-10-11

申请号：US13247610

申请日：2011-09-28

Applicant: Daniel Feldkhun ,  Kelvin H. Wagner

Inventor： Daniel Feldkhun ,  Kelvin H. Wagner

IPC: G01J3/44 ,  G01B11/14 ,  G01J3/00 ,  G01J1/02 ,  G01B9/02

CPC classification number: G01N21/6458 ,  G01N21/4795 ,  G02B21/06 ,  G02B27/0075

Abstract: Methods and systems are disclosed of sensing an object. A first radiation is spatially modulated to generate a structured second radiation. The object is illuminated with the structured second radiation such that the object produces a third radiation in response. Apart from any spatially dependent delay, a time variation of the third radiation is spatially independent. With a single-element detector, a portion of the third radiation is detected from locations on the object simultaneously. At least one characteristic of a sinusoidal spatial Fourier-transform component of the object is estimated from a time-varying signal from the detected portion of the third radiation.

Abstract translation: 公开了感测对象的方法和系统。 空间调制第一辐射以产生结构化的第二辐射。 用结构化的第二辐射照射物体，使得物体响应地产生第三辐射。 除了任何空间依赖的延迟之外，第三辐射的时间变化在空间上是独立的。 使用单元件检测器，同时从物体上的位置检测第三辐射的一部分。 根据来自第三辐射的检测部分的时变信号估计对象的正弦空间傅立叶变换分量的至少一个特征。

公开(公告)号：US20100008588A1

公开(公告)日：2010-01-14

申请号：US12499758

申请日：2009-07-08

Applicant: Daniel Feldkhun ,  Benjamin Braker ,  Eric Daniel Moore

Inventor： Daniel Feldkhun ,  Benjamin Braker ,  Eric Daniel Moore

IPC: G06K9/52

CPC classification number: G01B11/005 ,  G01B11/2518 ,  G01B11/2527 ,  G01B11/2536 ,  G01C3/08 ,  G01S7/4815 ,  G01S7/4818 ,  G01S7/484 ,  G01S7/486 ,  G01S7/499 ,  G01S17/48 ,  G01S17/89

Abstract: Methods, systems, and apparatuses are provided for estimating a location on an object in a three-dimensional scene. Multiple radiation patterns are produced by spatially modulating each of multiple first radiations with a distinct combination of one or more modulating structures, each first radiation having at least one of a distinct radiation path, a distinct source, a distinct source spectrum, or a distinct source polarization with respect to the other first radiations. The location on the object is illuminated with a portion of each of two or more of the radiation patterns, the location producing multiple object radiations, each object radiation produced in response to one of the multiple radiation patterns. Multiple measured values are produced by detecting the object radiations from the location on the object due to each pattern separately using one or more detector elements. The location on the object is estimated based on the multiple measured values.

Abstract translation: 提供了用于估计三维场景中对象上的位置的方法，系统和装置。 通过用一个或多个调制结构的不同组合空间调制多个第一辐射中的每一个产生多个辐射图，每个第一辐射具有不同的辐射路径，不同的源，不同的源光谱或不同的光源中的至少一个 相对于其他第一辐射的极化。 两个或多个辐射图案中的每一个的一部分被照射在物体上的位置，产生多个物体辐射的位置，响应于多个辐射图案之一产生的每个物体辐射。 通过使用一个或多个检测器元件分别由于每个图案检测来自物体上的位置的物体辐射来产生多个测量值。 基于多个测量值估计对象上的位置。

公开(公告)号：US20090316141A1

公开(公告)日：2009-12-24

申请号：US12485858

申请日：2009-06-16

Applicant: Daniel Feldkhun

Inventor： Daniel Feldkhun

IPC: G01J1/02

CPC classification number: G01N21/6458 ,  G02B21/06 ,  G02B27/0075

Abstract: Methods, systems, and apparatuses are provided for measuring one or more sinusoidal Fourier components of an object. A structured second radiation is generated by spatially modulating a first radiation. The structured second radiation illuminates the object, The structured second radiation is scaled and oriented relative to the object. The object produces a third radiation in response to the illuminating. A single-element detector detects a portion of the third radiation from multiple locations on the object substantially simultaneously for each spatial modulation of the first radiation and for each orientation of the second radiation. A time-varying signal is produced based on said detected portion of the third radiations. One or more characteristics of the one or more sinusoidal Fourier components of the object are estimated based on the time-varying signal.

Abstract translation: 提供了用于测量物体的一个或多个正弦傅立叶分量的方法，系统和装置。 通过空间调制第一辐射产生结构化的第二辐射。 结构化的第二辐射照射对象。结构化的第二辐射相对于物体被缩放和定向。 物体响应于照明产生第三辐射。 单元件检测器基本同时检测来自物体上多个位置的第三辐射的一部分，用于第一辐射的每个空间调制和第二辐射的每个取向。 基于所述检测到的第三辐射部分产生时变信号。 基于时变信号来估计物体的一个或多个正弦傅立叶分量的一个或多个特性。