公开(公告)号：US09482622B2

公开(公告)日：2016-11-01

申请号：US14677898

申请日：2015-04-02

Applicant: Munehiko Sato ,  Ramesh Raskar ,  Boxin Shi ,  Alex Olwal

Inventor： Munehiko Sato ,  Ramesh Raskar ,  Boxin Shi ,  Alex Olwal

IPC: G01N21/00 ,  G01N21/84 ,  G01N21/25 ,  G01N21/47 ,  G01N21/31

CPC classification number: G01N21/84 ,  G01N21/251 ,  G01N21/255 ,  G01N21/474 ,  G01N2021/3155 ,  G01N2021/3181 ,  G01N2021/479 ,  G01N2021/8444 ,  G01N2201/06113 ,  G01N2201/0612 ,  G01N2201/062 ,  G01N2201/0627 ,  G01N2201/12

Abstract: In illustrative implementations of this invention, light sources illuminate a surface with multi-spectral, multi-directional illumination that varies in direction, wavelength, coherence and collimation. One or more cameras capture images of the surface while the surface is illuminated under different lighting conditions. One or more computers take, as input, data indicative of or derived from the images, and determine a classification of the surface. Based on the computed classification, the computers output signals to control an I/O device, such that content displayed by the I/O device depends, at least in part, on the computed classification. In illustrative implementations, this invention accurately classifies a wide range of surfaces, including transparent surfaces, specular surfaces, and surfaces with few features.

公开(公告)号：US20160014393A1

公开(公告)日：2016-01-14

申请号：US14795113

申请日：2015-07-09

Applicant: Achuta Kadambi ,  Hang Zhao ,  Boxin Shi ,  Ayush Bhandari ,  Ramesh Raskar

Inventor： Achuta Kadambi ,  Hang Zhao ,  Boxin Shi ,  Ayush Bhandari ,  Ramesh Raskar

IPC: H04N13/02 ,  G01S17/89

CPC classification number: G01S17/89 ,  G01S17/003 ,  G01S17/46

Abstract: A time-of-flight camera images an object around a corner or through a diffuser. In the case of imaging around a corner, light from a hidden target object reflects off a diffuse surface and travels to the camera. Points on the diffuse surface function as a virtual sensors. In the case of imaging through a diffuser, light from the target object is transmitted through a diffusive media and travels to the camera. Points on a surface of the diffuse media that is visible to the camera function as virtual sensors. In both cases, a computer represents phase and intensity measurements taken by the camera as a system of linear equations and solves a linear inverse problem to (i) recover an image of the target object; or (ii) to compute a 3D position for each point in a set of points on an exterior surface of the target object.

Abstract translation: 飞行时间相机在拐角处或通过扩散器拍摄物体。 在围绕角落成像的情况下，来自隐藏的目标物体的光从漫射表面反射并行进到照相机。 漫反射面上的点作为虚拟传感器。 在通过漫射器进行成像的情况下，来自目标物体的光通过漫射介质传播并传播到照相机。 相机可见的漫射介质表面上的点作为虚拟传感器。 在这两种情况下，计算机表示作为线性方程组的相机拍摄的相位和强度测量值，并解决了线性反问题（i）恢复目标对象的图像; 或（ii）计算目标对象的外表面上的一组点中的每个点的3D位置。

公开(公告)号：US20150330905A1

公开(公告)日：2015-11-19

申请号：US14677898

申请日：2015-04-02

Applicant: Munehiko Sato ,  Ramesh Raskar ,  Boxin Shi ,  Alex Olwal

Inventor： Munehiko Sato ,  Ramesh Raskar ,  Boxin Shi ,  Alex Olwal

IPC: G01N21/84

CPC classification number: G01N21/84 ,  G01N21/251 ,  G01N21/255 ,  G01N21/474 ,  G01N2021/3155 ,  G01N2021/3181 ,  G01N2021/479 ,  G01N2021/8444 ,  G01N2201/06113 ,  G01N2201/0612 ,  G01N2201/062 ,  G01N2201/0627 ,  G01N2201/12

Abstract: In illustrative implementations of this invention, light sources illuminate a surface with multi-spectral, multi-directional illumination that varies in direction, wavelength, coherence and collimation. One or more cameras capture images of the surface while the surface is illuminated under different lighting conditions. One or more computers take, as input, data indicative of or derived from the images, and determine a classification of the surface. Based on the computed classification, the computers output signals to control an I/O device, such that content displayed by the I/O device depends, at least in part, on the computed classification. In illustrative implementations, this invention accurately classifies a wide range of surfaces, including transparent surfaces, specular surfaces, and surfaces with few features.

Abstract translation: 在本发明的说明性实施中，光源照射具有在方向，波长，相干和准直上变化的多光谱多方向照明的表面。 一个或多个照相机在表面在不同的照明条件下照明时捕获表面的图像。 一个或多个计算机作为输入，取代指示或从图像导出的数据，并且确定表面的分类。 基于所计算的分类，计算机输出信号以控制I / O设备，使得由I / O设备显示的内容至少部分地依赖于所计算的分类。 在说明性实施方式中，本发明可精确地分类宽范围的表面，包括透明表面，镜面和具有很少特征的表面。

公开(公告)号：US09897699B2

公开(公告)日：2018-02-20

申请号：US14795113

申请日：2015-07-09

Applicant: Achuta Kadambi ,  Hang Zhao ,  Boxin Shi ,  Ayush Bhandari ,  Ramesh Raskar

Inventor： Achuta Kadambi ,  Hang Zhao ,  Boxin Shi ,  Ayush Bhandari ,  Ramesh Raskar

IPC: G01C3/08 ,  G01S17/89 ,  G01S17/00 ,  G01S17/46

CPC classification number: G01S17/89 ,  G01S17/003 ,  G01S17/46

Abstract: A time-of-flight camera images an object around a corner or through a diffuser. In the case of imaging around a corner, light from a hidden target object reflects off a diffuse surface and travels to the camera. Points on the diffuse surface function as a virtual sensors. In the case of imaging through a diffuser, light from the target object is transmitted through a diffusive media and travels to the camera. Points on a surface of the diffuse media that is visible to the camera function as virtual sensors. In both cases, a computer represents phase and intensity measurements taken by the camera as a system of linear equations and solves a linear inverse problem to (i) recover an image of the target object; or (ii) to compute a 3D position for each point in a set of points on an exterior surface of the target object.