公开(公告)号：US20140104487A1

公开(公告)日：2014-04-17

申请号：US14135154

申请日：2013-12-19

Applicant: InView Technology Corporation

Inventor： Robert F. Bridge ,  Matthew A. Herman ,  Donna E. Hewitt ,  Tyler H. Weston ,  Justin A. Fritz

IPC: H04N5/235

CPC classification number: H04N5/2351 ,  G02B26/0833 ,  H04N5/2354 ,  H04N5/243 ,  H04N5/335

Abstract: An imaging system and method that captures compressive sensing (CS) measurements of a received light stream, and also obtains samples of background light level (BGLL). The BGLL samples may be used to compensate the CS measurements for variations in the BGLL. The system includes: a light modulator to spatially modulate the received light stream with spatial patterns, and a lens to concentrate the modulated light stream onto a light detector. The samples of BGLL may be obtained in various ways: (a) injecting calibration patterns among the spatial patterns; (b) measuring complementary light reflected by digital micromirrors onto a secondary output path; (c) separating and measuring a portion of light from the optical input path; (d) low-pass filtering the CS measurements; and (e) employing a light power meter with its own separate input path. Also, the CS measurements may be high-pass filtered to attenuate background light variation.

Abstract translation: 捕获接收的光流的压缩感测（CS）测量的成像系统和方法，并且还获得背景光级（BGLL）的样本。 BGLL样本可用于补偿BGLL中的变化的CS测量。 该系统包括：用空间模式对接收到的光流进行空间调制的光调制器，以及将调制光流集中到光检测器上的透镜。 BGLL的样本可以以各种方式获得：（a）在空间图案之间注入校准图案; （b）测量由数字微镜反射到辅助输出路径上的互补光; （c）分离和测量来自光学输入路径的一部分光; （d）CS测量的低通滤波; 和（e）使用具有其自己的独立输入路径的光功率计。 此外，CS测量可以被高通滤波以衰减背景光的变化。

公开(公告)号：US20150116563A1

公开(公告)日：2015-04-30

申请号：US14527459

申请日：2014-10-29

Applicant: InView Technology Corporation

Inventor： Matthew A. Herman ,  Justin A. Fritz

IPC: H04N5/378

CPC classification number: H04N5/378 ,  H03M7/3062

Abstract: A technique to collect measurements that are adapted to a signal/scene of interest is presented. The measurements are correlations with patterns that serve as modulating waveforms. The patterns correspond respectively to rows of a sensing matrix. The method uses a sensing matrix whose rows are partitioned into blocks. Each block corresponds to a distinct feature or salient property of the scene. For each block, the method collects a number of measurements of the signal/scene based on selected rows of the block, and generates one or more associated statistics for the block based on said measurements. The statistics for the blocks are then analyzed (e.g., sorted) to determine the most important blocks. Subsequent measurements of the signal/scene may be based on rows from those most important blocks. The original measurements and/or the subsequent measurements may then be used in an algorithm to reconstruct the signal/scene.

Abstract translation: 提出了收集适合于感兴趣的信号/场景的测量的技术。 测量结果与用作调制波形的图形相关。 这些图案分别对应于感测矩阵的行。 该方法使用其行被划分成块的感测矩阵。 每个块对应于场景的不同特征或突出特性。 对于每个块，该方法基于块的所选行收集信号/场景的多个测量值，并且基于所述测量生成用于块的一个或多个相关联的统计信息。 然后分析（例如，排序）块的统计信息以确定最重要的块。 信号/场景的后续测量可以基于来自那些最重要的块的行。 然后可以在算法中使用原始测量和/或后续测量来重构信号/场景。

公开(公告)号：US08922688B2

公开(公告)日：2014-12-30

申请号：US13461179

申请日：2012-05-01

Applicant: Robert F. Bridge ,  James M. Tidman ,  Lenore McMackin ,  Donna E. Hewitt ,  Richard G. Baraniuk

Inventor： Robert F. Bridge ,  James M. Tidman ,  Lenore McMackin ,  Donna E. Hewitt ,  Richard G. Baraniuk

IPC: H04N3/14 ,  H04N5/335 ,  H04N5/225 ,  H04N5/238 ,  H04N5/235 ,  G02B26/08

CPC classification number: H04N5/238 ,  G02B26/0833 ,  H04N5/2351 ,  H04N5/2354 ,  H04N5/335

Abstract: A compressive imaging system for optimizing dynamic range during the acquisition of compressed images. A light modulator modulates incident light with spatial patterns to produced modulated light. A light sensing device generates an electrical signal representing intensity of the modulated light over time. The system amplifies a difference between the electrical signal and an adjustable baseline voltage and captures samples of the amplified signal. The adjustable baseline voltage is set to be approximately equal to the average value of the electrical signal. A compressive imaging system for identifying and correcting hot spot(s) in the incident light field. Search patterns are sent to the light modulator and the corresponding samples of the electrical signal are analyzed. Once the hot spot is located, the light modulating elements corresponding to the hot spot may be turned off or their duty cycle may be reduced.

Abstract translation: 压缩成像系统，用于在获取压缩图像期间优化动态范围。 光调制器利用空间图案调制入射光以产生调制光。 光感测装置产生表示随时间变化的调制光强度的电信号。 系统放大电信号和可调基线电压之间的差异，并捕获放大信号的采样。 可调基线电压被设置为近似等于电信号的平均值。 用于识别和校正入射光场中的热点的压缩成像系统。 搜索模式被发送到光调制器，并且分析相应的电信号样本。 一旦设置了热点，则可以关闭对应于热点的光调制元件，或者可以减少占空比。

公开(公告)号：US08885073B2

公开(公告)日：2014-11-11

申请号：US14017581

申请日：2013-09-04

Applicant: InView Technology Corporation

Inventor： Richard G. Barnaiuk ,  Kevin F. Kelly ,  Robert F. Bridge ,  Sujoy Chatterjee ,  Lenore McMackin

IPC: H04N9/73 ,  H04N5/217 ,  H04N5/228 ,  G03B3/00 ,  H04N5/335 ,  H04N5/235 ,  G02B26/08 ,  H04N5/238

CPC classification number: H04N5/238 ,  G02B26/0833 ,  H04N5/2351 ,  H04N5/2354 ,  H04N5/335

Abstract: An imaging system and method that captures compressive sensing (CS) measurements of a received light stream, and also obtains samples of background light level (BGLL). The BGLL samples may be used to compensate the CS measurements for variations in the BGLL. The system includes: a light modulator to spatially modulate the received light stream with spatial patterns, and a lens to concentrate the modulated light stream onto a light detector. The samples of BGLL may be obtained in various ways: (a) injecting calibration patterns among the spatial patterns; (b) measuring complementary light reflected by digital micromirrors onto a secondary output path; (c) separating and measuring a portion of light from the optical input path; (d) low-pass filtering the CS measurements; and (e) employing a light power meter with its own separate input path. Also, the CS measurements may be high-pass filtered to attenuate background light variation.

Abstract translation: 捕获接收的光流的压缩感测（CS）测量的成像系统和方法，并且还获得背景光级（BGLL）的样本。 BGLL样本可用于补偿BGLL中的变化的CS测量。 该系统包括：用空间模式对接收到的光流进行空间调制的光调制器，以及将调制光流集中到光检测器上的透镜。 BGLL的样本可以以各种方式获得：（a）在空间图案之间注入校准图案; （b）测量由数字微镜反射到辅助输出路径上的互补光; （c）分离和测量来自光学输入路径的一部分光; （d）CS测量的低通滤波; 和（e）使用具有其自己的独立输入路径的光功率计。 此外，CS测量可以被高通滤波以衰减背景光的变化。

公开(公告)号：US20140211039A1

公开(公告)日：2014-07-31

申请号：US14169903

申请日：2014-01-31

Applicant: InView Technology Corporation

Inventor： Matthew A. Herman ,  Tyler H. Weston

IPC: G06F17/14 ,  H04N5/232

CPC classification number: G06F17/145 ,  G06T1/0007 ,  G06T9/00 ,  H04N5/23229 ,  H04N19/90

Abstract: If a Hadamard matrix HN of order N=BF is a Kronecker product HF HB of an order F Hadamard matrix and an order B Hadamard matrix, then transformation by HN may be implemented by a fast Hadamard transform at coarse scale followed by fast Hadamard transforms at fine scale. Alternatively, transformation by HN may be achieved by performing order B transforms on columns of a two-dimensional array and order B transforms on rows of the array. As another alternative, transformation by HN may be achieved by computing intermediate values based on linear combinations of input elements and then computing linear combinations of the intermediate values. For compressive signal acquisition, any row of HN may be generated by concatenating selectively modified copies of a corresponding row of HB. Thus, modulation patterns may be generated on the fly.

Abstract translation: 如果阶N = BF的Hadamard矩阵HN是F阶Hadamard矩阵的Kronecker乘积HF HB和阶H Hadamard矩阵，则HN的变换可以通过在粗尺度上的快速Hadamard变换来实现，随后是快速Hadamard变换 罚款。 或者，可以通过对二维阵列的列执行B阶变换并且对阵列的行上的阶数B进行变换来实现HN的变换。 作为另一替代方案，可以通过基于输入元素的线性组合计算中间值，然后计算中间值的线性组合来实现HN的变换。 对于压缩信号采集，可以通过连接HB的相应行的选择性修改的副本来生成任何HN行。 因此，可以在飞行中产生调制模式。

公开(公告)号：US20140168482A1

公开(公告)日：2014-06-19

申请号：US14106542

申请日：2013-12-13

Applicant: InView Technology Corporation

Inventor： Matthew A. Herman ,  Donna E. Hewitt ,  Tyler H. Weston ,  Lenore McMackin

IPC: G06T5/00

CPC classification number: G06T5/001 ,  G06T5/50 ,  G06T2207/10052 ,  G06T2207/20212

Abstract: A mechanism for reconstructing sub-images based on measurement data acquired by an imaging system including an array of light modulating elements and an array of photodetectors. Each sub-image is reconstructed based on samples from a respective photodetector and a respective set of measurement patterns defined on a respective virtual sub-region on the modulating array. Each virtual sub-region is configured to include at least the light modulating elements that are able to send a non-trivial amount of light to the respective photodetector during a pattern application period. The virtual sub-regions overlap because many light modulating elements are capable of sending light to more than one photodetector. Whenever a measurement pattern of one virtual sub-region overlaps the measurement pattern of a neighboring virtual sub-region, the two measurement patterns agree by design. Thus, the measurement patterns for the collection of virtual sub-regions combine to form a pattern on the whole modulating array.

Abstract translation: 一种用于基于由包括光调制元件阵列和光电检测器阵列的成像系统获取的测量数据重建子图像的机构。 基于来自相应光电检测器的样本和在调制阵列上的相应虚拟子区域上定义的相应的一组测量图案重建每个子图像。 每个虚拟子区域被配置为至少包括能够在图案应用周期期间向相应光电检测器发送不平凡量的光的光调制元件。 虚拟子区域重叠，因为许多光调制元件能够向多于一个的光电检测器发送光。 每当一个虚拟子区域的测量图案与相邻虚拟子区域的测量图案重叠时，两个测量图案被设计一致。 因此，用于收集虚拟子区域的测量模式组合在整个调制阵列上形成图案。

公开(公告)号：US08717492B2

公开(公告)日：2014-05-06

申请号：US13208263

申请日：2011-08-11

Applicant: Lenore McMackin ,  Donna E. Hewitt ,  Tyler H. Weston ,  Byron Zollars

Inventor： Lenore McMackin ,  Donna E. Hewitt ,  Tyler H. Weston ,  Byron Zollars

IPC: H04N5/228 ,  G03B13/36

CPC classification number: H04N5/238 ,  G02B26/0833 ,  H04N5/2351 ,  H04N5/2354 ,  H04N5/335

Abstract: A compressive imaging (CI) device including a light modulator and a light sensor (e.g., a single-element sensor or a sensor array). The CI device may support the focusing of light on the light modulator and/or on the light sensor in a number of ways: (1) determining a focus indicator value by analyzing a 1D or 2D image in the incident light field; (2) measuring light spillover between modulator regions and light sensing elements—either at the level of voltage measurements or the level of reconstructed images; (3) measure noise in reconstructed sub-images; (4) measuring an amount high-frequency content in the incident light field; (5) incorporating a range finder to measure distance to the object being imaged; (6) incorporating an image sensor downstream from the modulator; and (7) splitting a portion of the incident light onto an image sensor, prior to the modulator.

Abstract translation: 包括光调制器和光传感器（例如，单元件传感器或传感器阵列）的压缩成像（CI）装置。 CI设备可以以多种方式支持对光调制器和/或光传感器上的光的聚焦：（1）通过分析入射光场中的1D或2D图像来确定聚焦指示符值; （2）测量调制器区域和光感测元件之间的光线溢出 - 无论是在电压测量级别还是重建图像级别; （3）重建子图像中测量噪声; （4）测量入射光场中的高频含量的量; （5）结合测距仪来测量到被成像物体的距离; （6）将调制器下游的图像传感器并入; 和（7）在调制器之前将入射光的一部分分解成图像传感器。

公开(公告)号：US20130083312A1

公开(公告)日：2013-04-04

申请号：US13631626

申请日：2012-09-28

Applicant: InView Technology Corporation

Inventor： Richard G. Baraniuk ,  Tyler H. Weston

IPC: G01J3/28

CPC classification number: G01J3/2823 ,  G01J3/0229 ,  G01J3/51 ,  G01J5/0025 ,  G01J5/0831 ,  G01J5/0834 ,  G01J5/0846 ,  G01J2003/2813 ,  G01J2003/2826 ,  G01J2005/0077

Abstract: A system and method for searching an incident light field for atypical regions (e.g., hot spots or cool spots or spectrally distinctive regions) within the incident light field using a light modulator and a spectral sensing device. Once the atypical regions are identified, the light modulator may be used to mask the incident light field so that the spectral sensing device can make spatially-concentrated measurements of the wavelength spectrum of the atypical regions (or alternatively, the exterior of the atypical regions). Furthermore, in a compressive imaging mode, a sequence of spatial patterns may be supplied to the light modulator, and a corresponding sequence of wavelength spectra may be collected from the spectral sensing device. The wavelength spectra comprise a compressed representation of the incident light field over space and wavelength. The wavelength spectra may be used to reconstruct a multispectral (or hyperspectral) data cube.

Abstract translation: 一种用于使用光调制器和光谱感测装置在入射光场内搜索入射光场的非典型区域（例如，热点或冷点或光谱区别区域）的系统和方法。 一旦识别了非典型区域，光调制器可以用于掩蔽入射光场，使得光谱感测装置可以对非典型区域（或者替代地，非典型区域的外部）的波长光谱进行空间上集中的测量， 。 此外，在压缩成像模式中，可以向光调制器提供空间图案序列，并且可以从光谱感测装置收集相应的波长光谱序列。 波长光谱包括在空间和波长上的入射光场的压缩表示。 波长光谱可用于重建多光谱（或高光谱）数据立方体。