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1. 发明授权

US06764185B1 Projector as an input and output device 失效
标题翻译：投影机作为输入和输出设备
公开(公告)号：US06764185B1
公开(公告)日：2004-07-20
申请号：US10636356
申请日：2003-08-07
申请人： Paul A. Beardsley , Ramesh Raskar , Clifton L. Forlines , Dirk Brinkman
发明人： Paul A. Beardsley , Ramesh Raskar , Clifton L. Forlines , Dirk Brinkman
IPC分类号： G03B2100
CPC分类号： G03B21/00
摘要： An interactive display system includes a sensor for sensing a relationship between a mobile coordinate frame fixed to a moving projector, and a stable coordinate frame fixed to a stationary display surface in the real world. An output image to be projected on the display surface is partitioned into a black image portion having a fixed relationship to the mobile coordinate frame, a stable image portion within the block image portion having a fixed relationship to the stable coordinate frame, and a mobile image portion within the stable image portion having a fixed relationship to the mobile coordinate frame. The mobile portion can be used as a pointer within the stable portion in a mouse-cursor like manner.
摘要翻译：交互式显示系统包括用于感测固定到移动投影仪的移动坐标系与固定在现实世界中的固定显示表面的稳定坐标系之间的关系的传感器。要投影在显示表面上的输出图像被分割成与移动坐标系具有固定关系的黑色图像部分，在与稳定坐标系具有固定关系的块图像部分内的稳定图像部分和移动图像稳定图像部分内的部分与移动坐标系具有固定的关系。移动部分可以以类似于鼠标光标的方式用作稳定部分内的指针。

2. 发明授权

US07292269B2 Context aware projector 有权
标题翻译：上下文感知投影机
公开(公告)号：US07292269B2
公开(公告)日：2007-11-06
申请号：US10412178
申请日：2003-04-11
申请人： Ramesh Raskar , Clifton L. Forlines , Paul A. Beardsley
发明人： Ramesh Raskar , Clifton L. Forlines , Paul A. Beardsley
IPC分类号： G03B21/56
CPC分类号： H04N5/74 , G06F3/011 , G06T19/006
摘要： A method displays an output image on an object. A set of unique markers are fixed to the object at predetermined locations. An input image of the object and the markers is acquired with a camera in a fixed physical relationship to a projector. A pose of the projector with respect to the markers is determined from the image. Then, one or more output images related to the object can be projected onto the object, at predetermine locations, according to the pose of the projector and the unique markers.
摘要翻译：一种方法在对象上显示输出图像。一组独特的标记在预定位置固定到对象。使用与投影仪的固定物理关系的相机获取对象和标记的输入图像。根据图像确定投影仪相对于标记的姿态。然后，根据投影机的姿态和独特的标记，可以在预先确定的位置将与对象相关的一个或多个输出图像投影到对象上。

3. 发明授权

US07242818B2 Position and orientation sensing with a projector 有权
标题翻译：使用投影机进行位置和方位感应
公开(公告)号：US07242818B2
公开(公告)日：2007-07-10
申请号：US10346442
申请日：2003-01-17
申请人： Paul A. Beardsley , Ramesh Raskar , Vaibhav Vaish
发明人： Paul A. Beardsley , Ramesh Raskar , Vaibhav Vaish
IPC分类号： G06K9/36
CPC分类号： G06K9/209 , G06K9/2036 , G06T7/73 , H04N5/74 , H04N9/3185 , H04N9/3194
摘要： A position and orientation of a projector are determined from projected images. First, a homography between a camera and a planar surface, where the relationship between the camera and planar surface is fixed, is determined. Next, a known pattern is projected on the planar surface with a projector having known intrinsic parameters and an unknown position and orientation. An image of the known pattern is acquired with the camera, and a position and orientation of the projector is determined from the image using the homography and the intrinsic parameters.
摘要翻译：从投影图像确定投影仪的位置和方向。首先，确定相机与平面之间的关系固定在相机和平面之间的单应性。接下来，已知的图案用具有已知固有参数和未知位置和取向的投影仪投影在平面上。使用相机获取已知图案的图像，并且使用单应性和内在参数从图像确定投影仪的位置和取向。

4. 发明授权

US06811264B2 Geometrically aware projector 有权
标题翻译：几何感知投影机
公开(公告)号：US06811264B2
公开(公告)日：2004-11-02
申请号：US10394314
申请日：2003-03-21
申请人： Ramesh Raskar , Jeroen van Baar , Paul A. Beardsley
发明人： Ramesh Raskar , Jeroen van Baar , Paul A. Beardsley
IPC分类号： G03B2114
CPC分类号： G06T3/0081 , G03B37/04 , G06K9/2036 , G06T5/006 , H04N9/3147 , H04N9/3185 , H04N9/3194
摘要： An apparatus for projecting an output image on a display surface includes a processing unit. The processing unit includes a microprocessor, a memory and an I/O interface connected by buses. A projector sub-system coupled to the processing unit is for display output images on the display surface. A camera sub-system couple to the processing unit is for acquiring input images reflecting a geometry of the display surface. The camera sub-system is in a fixed physical relationship to the projector sub-system. Internal sensors coupled to the processing unit are for determining an orientation of the projector sub-system and the camera sub-system with respect to the display surface.
摘要翻译：用于在显示表面上投影输出图像的装置包括处理单元。处理单元包括微处理器，存储器和通过总线连接的I / O接口。耦合到处理单元的投影仪子系统用于在显示表面上显示输出图像。耦合到处理单元的相机子系统用于获取反映显示表面几何形状的输入图像。相机子系统与投影机子系统处于固定的物理关系。耦合到处理单元的内部传感器用于确定投影仪子系统和相机子系统相对于显示表面的取向。

5. 发明授权

US07154395B2 Interactive wireless tag location and identification system 失效
公开(公告)号：US07154395B2
公开(公告)日：2006-12-26
申请号：US10883235
申请日：2004-07-01
申请人： Ramesh Raskar , Paul A. Beardsley , Jeroen van Baar , Paul H. Dietz
发明人： Ramesh Raskar , Paul A. Beardsley , Jeroen van Baar , Paul H. Dietz
IPC分类号： G08B1/08
CPC分类号： G06K19/0728 , G01S5/16 , G06K7/10079 , G06K19/0723
摘要： A wireless location and identification system includes a controller and a tag. The controller has a projector configured to generate a unique temporal sequence of light intensities for each pixel in an output image of the projector and a wireless transceiver configured to emit an output signal and receive an input signal. The tag includes a photo-sensor configured to sense the unique temporal sequence of light intensities of a particular pixel, a transducer configured to receive the output signal from the transceiver, and a means for modulating, according to the unique temporal sequence of light intensities, the input signal for the transceiver in response to receiving the output signal and sensing the unique temporal sequence of light intensities of the particular pixel to indicate a location of the tag to the controller.

6. 发明授权

US06755537B1 Method for globally aligning multiple projected images 有权
标题翻译：全局校准多个投影图像的方法
公开(公告)号：US06755537B1
公开(公告)日：2004-06-29
申请号：US10393686
申请日：2003-03-21
申请人： Ramesh Raskar , Jeroen van Baar , Paul A. Beardsley
发明人： Ramesh Raskar , Jeroen van Baar , Paul A. Beardsley
IPC分类号： G03B2126
CPC分类号： H04N9/3147 , H04N5/74 , H04N9/3194
摘要： A method forms a cluster from a set of projectors. Each projector in the set includes a projector sub-system in a fixed physical relationship to a camera sub-system, and a communication sub-system for sending and receiving messages. A calibrate message is received in the projectors via the communications sub-system. A ready message is broadcast by the projectors using the communications sub-system. A structured pattern is projected sequentially by each of the projectors on a display surface using the projector sub-system. An input image of the structured pattern is acquired sequentially by each of the projectors using the camera sub-system. The projectors are globally aligned with each other and the display surface according to the input images.
摘要翻译：一种方法从一组投影机形成一个集群。该组中的每个投影仪包括与照相机子系统固定物理关系的投影仪子系统和用于发送和接收消息的通信子系统。通过通信子系统在投影机中接收校准信息。投影机使用通信子系统广播就绪消息。使用投影仪子系统，在显示表面上通过每个投影仪依次投影结构化图案。使用相机子系统的每个投影仪顺序地获取结构化图案的输入图像。投影机根据输入图像在全球范围内对准显示面。

7. 发明授权

US07137707B2 Projector-camera system with laser pointers 有权
公开(公告)号：US07137707B2
公开(公告)日：2006-11-21
申请号：US10883224
申请日：2004-07-01
申请人： Paul A. Beardsley , Jeroen van Baar , Ramesh Raskar
发明人： Paul A. Beardsley , Jeroen van Baar , Ramesh Raskar
IPC分类号： G03B21/26 , H04N3/23
CPC分类号： H04N9/3185 , G03B17/54 , G03B21/26 , H04N5/74 , H04N9/3194
摘要： A rigidly-coupled projector-camera system is augmented with laser pointers. The projector-camera system and lasers can be used to determine homography between the projector and a display surface, so that a projection of any desired geometry can be made on the display surface.

8. 发明授权

US06834965B2 Self-configurable ad-hoc projector cluster 有权
公开(公告)号：US06834965B2
公开(公告)日：2004-12-28
申请号：US10394688
申请日：2003-03-21
申请人： Ramesh Raskar , Jeroen van Baar , Paul A. Beardsley
发明人： Ramesh Raskar , Jeroen van Baar , Paul A. Beardsley
IPC分类号： G03B2126
CPC分类号： G03B21/26
摘要： A system projects multiple output images on a display surface. The system includes multiple projectors. Each projector includes a processing unit. The processing unit includes a microprocessor, a memory and an I/O interface connected by busses. A projector sub-system coupled to the processing unit is for displaying output images on the display surface. A camera sub-system coupled to the processing unit is for acquiring input images reflecting a geometry of the display surface. The camera sub-system is in a fixed physical relationship to the projector sub-system. A network sub-system coupled to the processing unit is for communicating messages between the projectors. Internal sensors coupled to the processing unit are for determining an orientation of the projector sub-system and the camera sub-system with respect to the display surface.

9. 发明授权

US09451141B2 Methods and apparatus for demultiplexing illumination 有权
标题翻译：用于解复用照明的方法和装置
公开(公告)号：US09451141B2
公开(公告)日：2016-09-20
申请号：US14690159
申请日：2015-04-17
申请人： Achuta Kadambi , Ayush Bhandari , Ramesh Raskar
发明人： Achuta Kadambi , Ayush Bhandari , Ramesh Raskar
IPC分类号： H04N5/225 , H04N5/222 , G01S17/89 , G01S7/481
CPC分类号： H04N5/2256 , G01S7/4815 , G01S17/89 , G06T2207/10028 , H04N5/2226
摘要： In illustrative implementations of this invention, an imaging system includes multiple light sources that illuminate a scene, and also includes a lock-in time of flight camera. While the scene is illuminated by these light sources, each of the light sources is amplitude-modulated by a different modulation pattern, and a reference signal is applied to the lock-in time-of-flight camera. The modulation patterns and the reference signal are carefully chosen such that the imaging system is able to disentangle, in real time, the respective contributions of the different light sources, and to compute, in real-time, depth of the scene. In some cases, the modulation signals for the light sources are orthogonal to each other and the reference signal is broadband. In some cases, the modulation codes for the light sources and the reference code are optimal codes that are determined by an optimization algorithm.
摘要翻译：在本发明的说明性实现中，成像系统包括照亮场景的多个光源，并且还包括飞行时间相机的锁定时间。当这些光源照亮场景时，每个光源被不同的调制模式进行幅度调制，并且将参考信号应用于锁定飞行时间相机。仔细选择调制图案和参考信号，使得成像系统能够实时地解析不同光源的相应贡献，并且实时地计算场景的深度。在某些情况下，光源的调制信号彼此正交，参考信号是宽带的。在某些情况下，光源的调制码和参考码是由优化算法确定的最佳码。

10. 发明授权

US09380221B2 Methods and apparatus for light field photography 有权
标题翻译：光场摄影的方法和装置
公开(公告)号：US09380221B2
公开(公告)日：2016-06-28
申请号：US14192800
申请日：2014-02-27
申请人： Kshitij Marwah , Gordon Wetzstein , Ramesh Raskar
发明人： Kshitij Marwah , Gordon Wetzstein , Ramesh Raskar
IPC分类号： H04N5/225 , H04N5/228 , G02B26/00 , H04N5/262
CPC分类号： H04N5/2621 , H04N5/2254
摘要： In exemplary implementations of this invention, a light field camera uses a light field dictionary to reconstruct a 4D light field from a single photograph. The light field includes both angular and spatial information and has a spatial resolution equal to the spatial resolution of the imaging sensor. Light from a scene passes through a coded spatial light modulator (SLM) before reaching an imaging sensor. Computer processors reconstruct a light field. This reconstruction includes computing a sparse or compressible coefficient vector using a light field dictionary matrix. Each column vector of the dictionary matrix is a light field atom. These light field atoms each, respectively, comprise information about a small 4D region of a light field. Reconstruction quality may be improved by using an SLM that is as orthogonal as possible to the dictionary.
摘要翻译：在本发明的示例性实施方案中，光场照相机使用光场辞典从单张照片重建4D光场。光场包括角度和空间信息，并且具有等于成像传感器的空间分辨率的空间分辨率。来自场景的光在到达成像传感器之前通过编码的空间光调制器（SLM）。计算机处理器重建光场。该重建包括使用光场字典矩阵来计算稀疏或可压缩的系数向量。字典矩阵的每个列向量都是一个光场原子。这些光场原子各自分别包括关于光场的小4D区域的信息。可以通过使用与字典尽可能正交的SLM来改善重建质量。

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