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1. 发明授权

US08009192B2 System and method for sensing geometric and photometric attributes of a scene with multiplexed illumination and solid states optical devices 有权
标题翻译：用多路复用照明和固态光学器件感测场景的几何和光度属性的系统和方法
公开(公告)号：US08009192B2
公开(公告)日：2011-08-30
申请号：US11435703
申请日：2006-05-17
申请人： Ramesh Raskar , Hideaki Nii , Jay W. Summet , Yong Zhao , Paul H. Dietz , Jonathan Westhues , Michael Noland , Erich Bruns , Shree Nayar , Vlad Branzoi
发明人： Ramesh Raskar , Hideaki Nii , Jay W. Summet , Yong Zhao , Paul H. Dietz , Jonathan Westhues , Michael Noland , Erich Bruns , Shree Nayar , Vlad Branzoi
IPC分类号： H04N7/18 , H04N5/222 , G02B13/16 , G06K19/06 , H04N5/225
CPC分类号： G01J1/42 , G01N21/55 , G01N2021/557 , G06K9/2036 , G06K9/3216 , G06K2009/3225 , G06T7/73 , G06T2207/10016 , G06T2207/30204
摘要： An optical receiver is arranged at a location in a scene. The optical receiver includes a photo sensor configured to detect spatio-temporal modulated optical signals directed at the scene from a set of spatially dispersed optical transmitters, and to convert the optical signals from each of the optical transmitters to a corresponding electronic signal. The electronic signals can be analyzed to determine geometric properties of the location in the scene.
摘要翻译：光接收器布置在场景中的位置。光接收器包括光传感器，其被配置为从一组空间分散的光发射器检测针对场景的时空调制光信号，并将来自每个光发射机的光信号转换成相应的电子信号。可以分析电子信号以确定场景中的位置的几何特性。

2. 发明申请

US20070268363A1 System and method for sensing geometric and photometric attributes of a scene with multiplexed illumination and solid states optical devices 有权
标题翻译：用多路复用照明和固态光学器件感测场景的几何和光度属性的系统和方法
公开(公告)号：US20070268363A1
公开(公告)日：2007-11-22
申请号：US11435703
申请日：2006-05-17
申请人： Ramesh Raskar , Hideaki Nii , Jay W. Summet , Yong Zhao , Paul H. Dietz , Jonathan Westhues , Michael Noland , Erich Bruns , Shree Nayar , Vlad Branzoi
发明人： Ramesh Raskar , Hideaki Nii , Jay W. Summet , Yong Zhao , Paul H. Dietz , Jonathan Westhues , Michael Noland , Erich Bruns , Shree Nayar , Vlad Branzoi
IPC分类号： H04N7/18 , G08B19/00 , G08B23/00
CPC分类号： G01J1/42 , G01N21/55 , G01N2021/557 , G06K9/2036 , G06K9/3216 , G06K2009/3225 , G06T7/73 , G06T2207/10016 , G06T2207/30204
摘要： An optical receiver is arranged at a location in a scene. The optical receiver includes a photo sensor configured to detect spatio-temporal modulated optical signals directed at the scene from a set of spatially dispersed optical transmitters, and to convert the optical signals from each of the optical transmitters to a corresponding electronic signal. The electronic signals can be analyzed to determine geometric properties of the location in the scene.
摘要翻译：光接收器布置在场景中的位置。光接收器包括光传感器，其被配置为从一组空间分散的光发射器检测针对场景的时空调制光信号，并将来自每个光发射机的光信号转换成相应的电子信号。可以分析电子信号以确定场景中的位置的几何特性。

3. 发明申请

US20070025720A1 Method for estimating camera settings adaptively 有权
标题翻译：自动估算摄像机设置的方法
公开(公告)号：US20070025720A1
公开(公告)日：2007-02-01
申请号：US11191681
申请日：2005-07-28
申请人： Ramesh Raskar , Amit Agrawal , Shree Nayar , Yuanzhen Li
发明人： Ramesh Raskar , Amit Agrawal , Shree Nayar , Yuanzhen Li
IPC分类号： G03B7/00
CPC分类号： G03B7/16 , G03B7/28 , G06K9/4661 , G06T5/008 , G06T5/50 , H04N5/2352
摘要： A camera is configured to adaptively determine camera settings. The camera includes a plurality of sensors elements configured to acquire a current image of a scene according to a current set of camera settings. A number of sensor elements having a set of desirable properties is measured. Then, a next set of camera settings that maximize an overall number of sensor elements having the set of desirable properties is determined to acquire a next better image.
摘要翻译：相机配置为自适应地确定相机设置。相机包括多个传感器元件，其被配置为根据当前的相机设置集获取场景的当前图像。测量具有一组所需特性的多个传感器元件。然后，确定最大化具有所述一组所需属性的传感器元件的总数的下一组相机设置以获取下一更好的图像。

4. 发明申请

US20070025717A1 Method and apparatus for acquiring HDR flash images 有权
标题翻译：用于获取HDR闪光图像的方法和装置
公开(公告)号：US20070025717A1
公开(公告)日：2007-02-01
申请号：US11191877
申请日：2005-07-28
申请人： Ramesh Raskar , Amit Agrawal , Shree Nayar , Yuanzhen Li
发明人： Ramesh Raskar , Amit Agrawal , Shree Nayar , Yuanzhen Li
IPC分类号： G03B15/03
CPC分类号： G06T5/50 , G03B15/03 , H04N5/2354 , H04N5/2355
摘要： A method generates a high dynamic range image by first acquiring a set of images of a scene illuminated by different lighting conditions. The set of images are then combined to generate a high dynamic range image.
摘要翻译：一种方法通过首先获得由不同照明条件照亮的场景的一组图像来产生高动态范围图像。然后将该组图像组合以产生高动态范围图像。

5. 发明申请

US20070285422A1 Method for Separating Direct and Global Illumination in a Scene 审中-公开
标题翻译：在场景中分离直接和全局照明的方法
公开(公告)号：US20070285422A1
公开(公告)日：2007-12-13
申请号：US11624016
申请日：2007-01-17
申请人： Shree Nayar , Gurunandan Krishnan , Michael Grossberg , Ramesh Raskar
发明人： Shree Nayar , Gurunandan Krishnan , Michael Grossberg , Ramesh Raskar
IPC分类号： G06T15/50
CPC分类号： G06T15/50 , G06K9/4661
摘要： A method and apparatus for determine an effect of direct and global illumination in a scene. A scene is illuminated with spatially varying illumination. A set of images is acquired of the scene, and a direct and global radiance in the set of images is determined.
摘要翻译：一种用于确定场景中直接和全局照明效果的方法和装置。一个场景用空间变化的照明照亮。获取场景的一组图像，并且确定该组图像中的直接和全局辐射。

6. 发明申请

US20070081815A1 Devices and methods for electronically controlling imaging 失效
标题翻译：用于电子控制成像的设备和方法
公开(公告)号：US20070081815A1
公开(公告)日：2007-04-12
申请号：US11417864
申请日：2006-05-04
申请人： Asaf Zomet , Shree Nayar
发明人： Asaf Zomet , Shree Nayar
IPC分类号： G03B35/00 , H04N13/02
CPC分类号： G03B11/00 , G02B3/0056 , G02B26/0833 , G03B35/10 , G03B37/04 , H04N5/2254 , H04N5/2259 , H04N5/232
摘要： Imaging devices and methods are provided. In some embodiments, a device includes a light modulator layer having a plurality of elements, each having a controllable transmittance, and a plurality of lenses, wherein each of the plurality of lenses is disposed to receive light independently of each other. The device further includes an image detector disposed at a distance from the light modulator layer and configured to acquire images from light that passes through the light modulator layer. In addition, the device includes a controller configured to control transmittance of the elements of the light modulator layer. Methods of acquiring images are also provided.
摘要翻译：提供成像设备和方法。在一些实施例中，装置包括具有多个元件的光调制器层，每个元件具有可控制的透射率，以及多个透镜，其中多个透镜中的每一个设置成彼此独立地接收光。该装置还包括一个图像检测器，该图像检测器设置在离光调制器层一定距离处并被配置为从通过光调制器层的光获得图像。另外，该装置包括控制器，其被配置为控制光调制器层的元件的透射率。还提供了获取图像的方法。

7. 发明申请

US20070053671A1 Systems and methods for reducing rain effects in images 失效
标题翻译：减少图像中雨的影响的系统和方法
公开(公告)号：US20070053671A1
公开(公告)日：2007-03-08
申请号：US11377743
申请日：2006-03-16
申请人： Kshitiz Garg , Shree Nayar
发明人： Kshitiz Garg , Shree Nayar
IPC分类号： G03B17/00 , G01N21/00
CPC分类号： G01W1/14 , G06K9/346 , G06T7/0002 , G06T2207/30242 , H04N5/232
摘要： Systems and methods for reducing the visibility of rain in acquired images are provided. One or more inputs relating the scene desired to be acquired by the user are used to retrieve camera settings that will reduce the visibility of rain in acquired images. Additionally, features relating to the scene may be automatically determined and used alone, or in combination with user inputs, to retrieve camera settings. The acquired images may be part of a video. Another feature of the invention is its use as a rain gauge. The camera settings are adjusted to enhance the visibility of rain, then one ore more images are acquired and analyzed for the amount and size of raindrops. From this analysis the rain rate can be determined.
摘要翻译：提供了用于降低获取的图像中雨的可视性的系统和方法。使用与用户想要获取的场景相关的一个或多个输入来检索将降低所获取的图像中的雨的可见度的相机设置。此外，与场景相关的特征可以单独地或与用户输入结合自动地确定和使用以检索相机设置。所获取的图像可以是视频的一部分。本发明的另一个特征是其用作雨量计。调整相机设置以增强雨的可见度，然后获取一个或多个图像并分析雨滴的数量和大小。从这个分析可以确定雨率。

8. 发明申请

US20060050386A1 Catadioptric single camera systems having radial epipolar geometry and methods and means thereof 有权
标题翻译：具有径向对极几何形状的反射折射单相机系统及其方法和装置
公开(公告)号：US20060050386A1
公开(公告)日：2006-03-09
申请号：US11135830
申请日：2005-05-23
申请人： Sujit Kuthirummal , Shree Nayar
发明人： Sujit Kuthirummal , Shree Nayar
IPC分类号： G02B27/24
CPC分类号： G02B17/00 , G02B17/08 , G06K9/20 , G06K9/209 , G06T7/557 , G06T7/97 , H04N13/207 , H04N13/218 , H04N13/282
摘要： Catadioptric single camera systems capable of sampling the lightfield of a scene from a locus of circular viewpoints and the methods thereof are described. The epipolar lines of the system are radial, and the systems have foveated vision characteristics. A first embodiment of the invention is directed to a camera capable of looking at a scene through a cylinder with a mirrored inside surface. A second embodiment uses a truncated cone with a mirrored inside surface. A third embodiment uses a first truncated cone with a mirrored outside surface and a second truncated cone with a mirrored inside surface. A fourth embodiment of the invention uses a planar mirror with a truncated cone with a mirrored inside surface. The present invention allows high quality depth information to be gathered by capturing stereo images having radial epipolar lines in a simple and efficient method.
摘要翻译：描述了能够从圆形视点的轨迹对场景的光场采样的反射折射单相机系统及其方法。系统的对极线是径向的，并且系统具有移动视觉特性。本发明的第一实施例涉及一种能够通过具有镜像内表面的圆柱体观察场景的相机。第二实施例使用具有镜面内表面的截头圆锥体。第三实施例使用具有镜面外表面的第一截锥体和具有镜面内表面的第二截锥体。本发明的第四实施例使用具有带有镜面内表面的截头锥体的平面镜。本发明允许通过以简单且有效的方法捕获具有径向核线的立体图像来收集高质量的深度信息。

9. 发明申请

US20050134599A1 Methods and systems for compensating an image projected onto a surface having spatially varying photometric properties 有权
标题翻译：用于补偿投影到具有空间变化的光度特性的表面上的图像的方法和系统
公开(公告)号：US20050134599A1
公开(公告)日：2005-06-23
申请号：US10883861
申请日：2004-07-02
申请人： Shree Nayar , Michael Grossberg , Harish Peri , Peter Belhumeur
发明人： Shree Nayar , Michael Grossberg , Harish Peri , Peter Belhumeur
IPC分类号： G06T20060101 , G06T3/00 , G09G5/02
CPC分类号： G06T3/00
摘要： Methods and systems are provided for displaying images onto an arbitrary surface, using a projector, such that the quality of the images is preserved despite surface imperfections or color variations. Methods and systems are also provided for controlling the appearance of a projection surface. Various embodiments use a detailed radiometric model and a calibration method to determine the pixel values required to be projected by a projector in order for a camera to observe a desired image. Other embodiments use a compensation algorithm that uses a feedback approach to provide the desired image compensation. Geometric mapping may be used to establish a correspondence between points in the images to be displayed by the projector and the corresponding points in the images that are captured by the camera.
摘要翻译：提供了使用投影仪将图像显示在任意表面上的方法和系统，使得即使表面缺陷或颜色变化也能保持图像的质量。还提供了用于控制投影表面的外观的方法和系统。各种实施例使用详细的辐射模型和校准方法来确定由投影仪投射的像素值，以便相机观察期望的图像。其他实施例使用使用反馈方法来提供期望的图像补偿的补偿算法。可以使用几何映射来建立要由投影仪显示的图像中的点与相机拍摄的图像中的对应点之间的对应关系。

10. 发明授权

US06229913B1 Apparatus and methods for determining the three-dimensional shape of an object using active illumination and relative blurring in two-images due to defocus 失效
标题翻译：用于使用有源照明确定对象的三维形状并由于散焦而在两个图像中相对模糊的装置和方法
公开(公告)号：US06229913B1
公开(公告)日：2001-05-08
申请号：US08776799
申请日：1997-07-18
申请人： Shree Nayar , Minori Noguchi , Masahiro Wantanabe
发明人： Shree Nayar , Minori Noguchi , Masahiro Wantanabe
IPC分类号： G06K900
CPC分类号： G01C3/32 , G02B27/2278 , G06K9/2036 , G06T7/571 , H04N13/236 , H04N13/271
摘要： A method and apparatus for mapping depth of an object (22) in a preferred arrangement uses a projected light pattern to provide a selected texture to the object (22) along the optical axis (24) of observation. An imaging system senses (32, 34) first and second images of the object (22) with the projected light pattern and compares the defocused of the projected pattern in the images to determine relative depth of elemental portions of the object (22).
摘要翻译：用于在优选布置中映射物体（22）的深度的方法和装置使用投影光图案来沿着观察的光轴（24）向所述物体（22）提供选定的纹理。成像系统利用投射的光图案感测物体（22）的第一和第二图像（32,34），并比较图像中的投影图案的散焦，以确定对象（22）的元素部分的相对深度。

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