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1. 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.

2. 发明授权

US06545660B1 Multi-user interactive picture presentation system and method 有权
标题翻译：多用户交互式图片呈现系统及方法
公开(公告)号：US06545660B1
公开(公告)日：2003-04-08
申请号：US09651002
申请日：2000-08-29
申请人： Chia Shen , Neal B. Lesh , Ryan S. Bardsley , Paul A. Beardsley , Baback Moghaddam
发明人： Chia Shen , Neal B. Lesh , Ryan S. Bardsley , Paul A. Beardsley , Baback Moghaddam
IPC分类号： G09G500
CPC分类号： G06F3/1446 , G06F3/048 , G06F3/1423 , G06T1/00
摘要： A system enables multiple users to interact with a picture presentation. The system includes a display surface having a horizontal orientation, preferably circular. A processor is configured to composite an image. The composite image includes a picture display area, an orientation area, and a plurality of control panels. There is one control panel for each of the users. A database, coupled to the processor, stores annotated pictures. Selected annotated pictures are to be composited into the picture display area of the displayed image. The pictures are selected using the control panel. A display device, coupled to the processor, displays the composite image on the display surface, and an input device is used to interact with the control panels, the orientation area, and the annotated pictures to enable the users to concurrently control the compositing of the sequence of images.
摘要翻译：系统使多个用户能够与图片呈现进行交互。该系统包括具有水平取向的显示表面，优选为圆形。处理器被配置为复合图像。合成图像包括图像显示区域，取向区域和多个控制面板。每个用户都有一个控制面板。耦合到处理器的数据库存储注释的图片。所选注释图片将被合成到显示图像的图像显示区域中。使用控制面板选择图像。耦合到处理器的显示设备在显示表面上显示合成图像，并且输入设备用于与控制面板，定向区域和注释图片交互，以使用户能够同时控制合成图像的合成图像序列

3. 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。

4. 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。

5. 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。

6. 发明授权

US07711182B2 Method and system for sensing 3D shapes of objects with specular and hybrid specular-diffuse surfaces 有权
标题翻译：用于用镜面和混合镜面漫反射表面感测物体的3D形状的方法和系统
公开(公告)号：US07711182B2
公开(公告)日：2010-05-04
申请号：US11497962
申请日：2006-08-01
申请人： Paul A. Beardsley
发明人： Paul A. Beardsley
IPC分类号： G06K9/46
CPC分类号： G01B11/2527 , G06T7/521
摘要： Surface normals and other 3D shape descriptors are determined for a specular or hybrid specular-diffuse object. A camera records an image of a smoothly spatially-varying pattern being reflected in the surface of the object, with the pattern placed at an initial position. The camera then records multiple images of the pattern undergoing a sequence of subsequent displacements to a final position distinct from the initial position. For a pixel in the images, the pattern displacement that corresponds to the minimum difference between the pixel value in the initial image and any of the final images is determined. The incident ray that strikes the surface of the object at the point being imaged by the pixel is then determined using the determined pattern displacement. The surface normal at that same surface point is then determined using the determined incident ray. Other 3D shape descriptors are determined from the surface normals of the object, such as principal curvatures, or the principal axes of a parametric surface, or the 3D shape, or the object pose.
摘要翻译：为镜面或混合镜面漫反射物体确定表面法线和其他3D形状描述符。相机记录在物体表面上反射的平滑空间变化图案的图像，其中图案置于初始位置。相机然后将经历一系列后续位移的图案的多个图像记录到与初始位置不同的最终位置。对于图像中的像素，确定对应于初始图像中的像素值与任何最终图像之间的最小差异的图案位移。然后使用确定的图案位移来确定在由像素成像的点处撞击物体表面的入射光线。然后使用确定的入射光线确定该同一表面点处的表面法线。其他3D形状描述符是从对象的表面法线确定的，例如主曲率，或参数曲面的主轴，或3D形状，或物体姿态。

7. 发明申请

US20080030744A1 Method and system for sensing 3D shapes of objects with specular and hybrid specular-diffuse surfaces 有权
标题翻译：用于用镜面和混合镜面漫反射表面感测物体的3D形状的方法和系统
公开(公告)号：US20080030744A1
公开(公告)日：2008-02-07
申请号：US11497962
申请日：2006-08-01
申请人： Paul A. Beardsley
发明人： Paul A. Beardsley
IPC分类号： G01B11/24
CPC分类号： G01B11/2527 , G06T7/521
摘要： Surface normals and other 3D shape descriptors are determined for a specular or hybrid specular-diffuse object. A camera records an image of a smoothly spatially-varying pattern being reflected in the surface of the object, with the pattern placed at an initial position. The camera then records multiple images of the pattern undergoing a sequence of subsequent displacements to a final position distinct from the initial position. For a pixel in the images, the pattern displacement that corresponds to the minimum difference between the pixel value in the initial image and any of the final images is determined. The incident ray that strikes the surface of the object at the point being imaged by the pixel is then determined using the determined pattern displacement. The surface normal at that same surface point is then determined using the determined incident ray. Other 3D shape descriptors are determined from the surface normals of the object, such as principal curvatures, or the principal axes of a parametric surface, or the 3D shape, or the object pose.
摘要翻译：为镜面或混合镜面漫反射物体确定表面法线和其他3D形状描述符。相机记录在物体表面上反射的平滑空间变化图案的图像，其中图案置于初始位置。相机然后将经历一系列后续位移的图案的多个图像记录到与初始位置不同的最终位置。对于图像中的像素，确定对应于初始图像中的像素值与任何最终图像之间的最小差异的图案位移。然后使用确定的图案位移来确定在由像素成像的点处撞击物体表面的入射光线。然后使用确定的入射光线确定该同一表面点处的表面法线。其他3D形状描述符是从对象的表面法线确定的，例如主曲率，或参数曲面的主轴，或3D形状，或物体姿态。

8. 发明授权

US07280685B2 Object segmentation from images acquired by handheld cameras 失效
标题翻译：由手持相机获取的图像的对象分割
公开(公告)号：US07280685B2
公开(公告)日：2007-10-09
申请号：US10294050
申请日：2002-11-14
申请人： Paul A. Beardsley
发明人： Paul A. Beardsley
IPC分类号： G06K9/00
CPC分类号： G06K9/342 , G06T7/187 , G06T7/564 , G06T7/579 , G06T2207/20132
摘要： A method determines a shape of an object in from an image. A visual hull larger than the object is constructed such that the object can be entirely contained within the visual hull. An image is acquired of the object by a camera. The visual hull is projected onto the image according to a position and pose of the camera.Seed pixels in the image are selected. The seed pixels are located on the projected visual hull, and a region is grown around each seed pixel. Each region includes neighboring pixels resembling the seed pixel. Then, the visual hull is reduced in size according to the grown regions to determine a two-dimensional shape of the object. When multiple images are used from different points of view, the three-dimensional shape can be determined.
摘要翻译：一种方法从图像中确定对象的形状。构造大于物体的视觉船体，使得物体可以完全包含在视觉船体内。通过相机获取对象的图像。根据相机的位置和姿势将视觉外壳投影到图像上。选择图像中的种子像素。种子像素位于投影的视觉船体上，并且在每个种子像素周围生长一个区域。每个区域包括类似于种子像素的相邻像素。然后，根据生长区域，视觉船体的尺寸减小以确定物体的二维形状。当从不同的角度使用多个图像时，可以确定三维形状。

9. 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.

10. 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.

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