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1. 发明申请

US20120237112A1 Structured Light for 3D Shape Reconstruction Subject to Global Illumination 有权
标题翻译：具有全球照明的3D形状重建的结构光
公开(公告)号：US20120237112A1
公开(公告)日：2012-09-20
申请号：US13048019
申请日：2011-03-15
申请人： Ashok Veeraraghavan , Mohit Gupta , Amit Agrawal
发明人： Ashok Veeraraghavan , Mohit Gupta , Amit Agrawal
IPC分类号： G06T7/00
CPC分类号： G06T7/0057 , G06T7/521 , G06T2207/10152 , G06T2207/20221
摘要： Depth values in a scene are measured by projecting sets of patterns on the scene, wherein each set of patterns is structured with different spatial frequency using different encoding functions. Sets of images of the scene is acquired, wherein there is one image for each pattern in each set. Depth values are determining for each pixel at corresponding locations in the sets of images. The depth values of each pixel are analyzed, and the depth value is returned if the depth values at the corresponding locations are similar. Otherwise, the depth value is marked as having an error.
摘要翻译：通过在场景上投影图案集来测量场景中的深度值，其中每组图案使用不同的编码功能被构造为具有不同的空间频率。获取场景的图像集合，其中每组中的每个图案有一个图像。深度值是针对图像组中相应位置处的每个像素确定的。分析每个像素的深度值，如果相应位置的深度值相似，则返回深度值。否则，深度值被标记为有错误。

2. 发明授权

US08811767B2 Structured light for 3D shape reconstruction subject to global illumination 有权
标题翻译：用于3D形状重建的结构光，受全球照明影响
公开(公告)号：US08811767B2
公开(公告)日：2014-08-19
申请号：US13048019
申请日：2011-03-15
申请人： Ashok Veeraraghavan , Mohit Gupta , Amit Agrawal
发明人： Ashok Veeraraghavan , Mohit Gupta , Amit Agrawal
IPC分类号： G06K9/40 , G06T7/00
CPC分类号： G06T7/0057 , G06T7/521 , G06T2207/10152 , G06T2207/20221
摘要： Depth values in a scene are measured by projecting sets of patterns on the scene, wherein each set of patterns is structured with different spatial frequency using different encoding functions. Sets of images of the scene is acquired, wherein there is one image for each pattern in each set. Depth values are determining for each pixel at corresponding locations in the sets of images. The depth values of each pixel are analyzed, and the depth value is returned if the depth values at the corresponding locations are similar. Otherwise, the depth value is marked as having an error.
摘要翻译：通过在场景上投影图案集来测量场景中的深度值，其中每组图案使用不同的编码功能被构造为具有不同的空间频率。获取场景的图像集合，其中每组中的每个图案有一个图像。深度值是针对图像组中相应位置处的每个像素确定的。分析每个像素的深度值，如果相应位置的深度值相似，则返回深度值。否则，深度值被标记为有错误。

3. 发明申请

US20110243442A1 Video Camera for Acquiring Images with Varying Spatio-Temporal Resolutions 审中-公开
标题翻译：用于通过不同的时空分辨率获取图像的摄像机
公开(公告)号：US20110243442A1
公开(公告)日：2011-10-06
申请号：US12751216
申请日：2010-03-31
申请人： Amit K. Agrawal , Ashok Veeraraghavan , Srinivasa G. Narasimhan , Mohit Gupta
发明人： Amit K. Agrawal , Ashok Veeraraghavan , Srinivasa G. Narasimhan , Mohit Gupta
IPC分类号： H04N5/262 , G06K9/34
CPC分类号： H04N5/3456 , H04N5/341
摘要： A sequence of images of a scene having varying spatio-temporal resolutions is acquired by a sensor of a camera. Adjacent pixels of the sensor are partitioned into a multiple sets of the pixels. An integration time for acquiring each set of pixels is partitioned into multiple time intervals. The images are acquired while some of the pixels in each set are ON for some of the intervals, while other pixels are OFF. Then, the pixels are combined into a space-time volume of voxels, wherein the voxels have varying spatial resolutions and varying temporal resolutions.
摘要翻译：通过照相机的传感器获取具有变化的时空分辨率的场景的图像序列。传感器的相邻像素被划分成多组像素。用于获取每组像素的积分时间被划分成多个时间间隔。获取图像，而对于某些间隔，每组中的一些像素为ON，而其他像素为OFF。然后，像素被组合成时空体积的体素，其中体素具有变化的空间分辨率和变化的时间分辨率。

4. 发明申请

US20120162457A1 Programmable Camera and Video Reconstruction Method 有权
标题翻译：可编程相机和视频重建方法
公开(公告)号：US20120162457A1
公开(公告)日：2012-06-28
申请号：US12977743
申请日：2010-12-23
申请人： Ashok Veeraraghavan , Dikpal N. Reddy , Amit Agrawal
发明人： Ashok Veeraraghavan , Dikpal N. Reddy , Amit Agrawal
IPC分类号： H04N5/228
CPC分类号： H04N5/2254 , H04N5/23225 , H04N5/23232
摘要： A camera for acquiring a sequence of frames of a scene as a video includes a sensor with an array of sensor pixels. Individual sensor pixels are modulated by corresponding modulation functions while acquiring each frame of the video. The modulation can be performed by a transmissive or reflective masked arranged in an optical path between the scene and the senor. The frames can be reconstructed to have a frame rate and spatial resolution substantially higher than a natural frame rate and a spatial resolution of the camera.
摘要翻译：用于获取作为视频的场景的帧序列的相机包括具有传感器像素阵列的传感器。单个传感器像素由相应的调制功能调制，同时获取视频的每一帧。可以通过布置在场景和传感器之间的光路中的透射或反射掩模来执行调制。可以将帧重构成具有比帧的自然帧速率和相机的空间分辨率高的帧速率和空间分辨率。

5. 发明授权

US08405763B2 Video camera for reconstructing varying spatio-temporal resolution videos 有权
标题翻译：用于重建不同时空分辨率视频的摄像机
公开(公告)号：US08405763B2
公开(公告)日：2013-03-26
申请号：US12977743
申请日：2010-12-23
申请人： Ashok Veeraraghavan , Dikpal N Reddy , Amit Agrawal
发明人： Ashok Veeraraghavan , Dikpal N Reddy , Amit Agrawal
IPC分类号： H04N5/238 , H04N5/228 , G06K9/34
CPC分类号： H04N5/2254 , H04N5/23225 , H04N5/23232
摘要： A camera for acquiring a sequence of frames of a scene as a video includes a sensor with an array of sensor pixels. Individual sensor pixels are modulated by corresponding modulation functions while acquiring each frame of the video. The modulation can be performed by a transmissive or reflective masked arranged in an optical path between the scene and the senor. The frames can be reconstructed to have a frame rate and spatial resolution substantially higher than a natural frame rate and a spatial resolution of the camera.
摘要翻译：用于获取作为视频的场景的帧序列的相机包括具有传感器像素阵列的传感器。单个传感器像素由相应的调制功能调制，同时获取视频的每一帧。可以通过布置在场景和传感器之间的光路中的透射或反射掩模来执行调制。可以将帧重构成具有比帧的自然帧速率和相机的空间分辨率高的帧速率和空间分辨率。

6. 发明授权

US08941726B2 Method and system for segmenting moving objects from images using foreground extraction 有权
标题翻译：使用前景提取从图像中分割移动物体的方法和系统
公开(公告)号：US08941726B2
公开(公告)日：2015-01-27
申请号：US12634839
申请日：2009-12-10
申请人： Tim K. Marks , Ashok Veeraraghavan , Yuichi Taguchi
发明人： Tim K. Marks , Ashok Veeraraghavan , Yuichi Taguchi
IPC分类号： H04N7/18 , G06T7/00 , G06T1/00
CPC分类号： G06T7/0081 , G06T1/0014 , G06T7/11 , G06T7/143 , G06T2207/30164
摘要： A set of images is acquired of a scene by a camera. The scene includes a moving object, and a relative difference of a motion of the camera and a motion of the object is substantially zero. Statistical properties of pixels in the images are determined, and a statistical method is applied to the statistical properties to identify pixels corresponding to the object.
摘要翻译：通过相机获取场景的一组图像。场景包括移动物体，并且相机的运动和物体的运动的相对差异基本为零。确定图像中像素的统计特性，并将统计学方法应用于统计特性以识别对象的像素。

7. 发明授权

US08306314B2 Method and system for determining poses of objects 有权
标题翻译：用于确定物体姿态的方法和系统
公开(公告)号：US08306314B2
公开(公告)日：2012-11-06
申请号：US12648190
申请日：2009-12-28
申请人： Cuneyt Oncel Tuzel , Ashok Veeraraghavan
发明人： Cuneyt Oncel Tuzel , Ashok Veeraraghavan
IPC分类号： G06K9/00 , G06K9/62
CPC分类号： G06T1/00 , G06T7/586 , G06T7/74 , G06T15/20 , G06T2207/10152 , G06T2207/30164
摘要： A pose for an object in a scene is determined by first rendering sets of virtual images of a model of the object using a virtual camera. Each set of virtual images is for a different known pose the model, and constructing virtual depth edge map from each virtual image, which are stored in a database. A set of real images of the object at an unknown pose are acquired by a real camera, and constructing real depth edge map for each real image. The real depth edge maps are compared with the virtual depth edge maps using a cost function to determine the known pose that best matches the unknown pose, wherein the matching is based on locations and orientations of pixels in the depth edge maps.
摘要翻译：通过使用虚拟相机首先渲染对象的模型的虚拟图像集来确定场景中的对象的姿势。每组虚拟图像是针对不同的已知姿态的模型，并且构建存储在数据库中的每个虚拟图像的虚拟深度边缘图。通过真实摄像机获取未知姿态的对象的一组真实图像，并为每个真实图像构建真实的深度边缘图。使用成本函数将真实深度边缘图与虚拟深度边缘图进行比较，以确定与未知姿势最佳匹配的已知姿势，其中匹配基于深度边缘图中的像素的位置和取向。

8. 发明授权

US08229242B2 Method for reconstructing surfaces of specular object from sparse reflection correspondences 有权
标题翻译：从稀疏反射对应重建镜面物体表面的方法
公开(公告)号：US08229242B2
公开(公告)日：2012-07-24
申请号：US12731333
申请日：2010-03-25
申请人： Ashok Veeraraghavan , Oncel C. Tuzel , Aswin Sankaranarayanan , Amit K Agrawal
发明人： Ashok Veeraraghavan , Oncel C. Tuzel , Aswin Sankaranarayanan , Amit K Agrawal
IPC分类号： G06K9/40 , G01B11/30
CPC分类号： G06T7/514 , G06T2207/10016
摘要： A point correspondence procedure is applied to a set of images of a specular object to produce sparse reflection correspondences. The set of images is subject to rotation while acquired by a camera. That is, either the camera, the environment or the object rotates. Either a linear system AΘ=0 is solved or a related second order cone program (SOCP) is solved, where Θ is a vector of local surface parameters. Gradients of the surface are obtained from the local quadric surface parameters, and the gradients are integrated to obtain normals, wherein the normals define a shape of the surface.
摘要翻译：点对应程序应用于镜面对象的一组图像以产生稀疏反射对应。相机拍摄时，该组图像会转动。也就是说，相机，环境或对象旋转。求解线性系统AΘ= 0或相关的二阶锥体程序（SOCP），其中Θ是局部表面参数的向量。表面的梯度从局部二次曲面参数获得，并且梯度被积分以获得法线，其中法线定义了表面的形状。

9. 发明授权

US08274573B2 Method and system for generating high temporal resolution video from low temporal resolution videos 失效
标题翻译：用于从低时间分辨率视频产生高时间分辨率视频的方法和系统
公开(公告)号：US08274573B2
公开(公告)日：2012-09-25
申请号：US12751460
申请日：2010-03-31
申请人： Amit K. Agrawal , Ashok Veeraraghavan
发明人： Amit K. Agrawal , Ashok Veeraraghavan
IPC分类号： H04N5/225
CPC分类号： H04N5/23277 , G06T3/4007 , H04N5/247
摘要： Embodiments of the invention disclose a system and a method for generating an output video having a first temporal resolution from input videos acquired synchronously of a scene by at least three cameras, wherein each input video has a second temporal resolution, wherein the second temporal resolution is less than the first temporal resolution. The method obtains frames of each input video, wherein the frames are sampled according to a code selected such that an integration time of the corresponding camera is greater than a frame time of the output video. Next, the method combines intensities of pixels of corresponding frames in a linear system; and solves the linear system independently for each corresponding frame to generate the output video.
摘要翻译：本发明的实施例公开了一种系统和方法，用于通过至少三个摄像机从与场景同步地获取的输入视频中产生具有第一时间分辨率的输出视频，其中每个输入视频具有第二时间分辨率，其中第二时间分辨率是小于第一时间分辨率。该方法获得每个输入视频的帧，其中根据所选择的代码对帧进行采样，使得相应摄像机的积分时间大于输出视频的帧时间。接下来，该方法组合线性系统中相应帧的像素强度; 并且为每个对应的帧独立地求解线性系统以产生输出视频。

10. 发明授权

US08155447B2 Determining points of parabolic curvature on surfaces of specular objects 有权
标题翻译：确定镜面物体表面抛物线曲率的点
公开(公告)号：US08155447B2
公开(公告)日：2012-04-10
申请号：US12730279
申请日：2010-03-24
申请人： Ashok Veeraraghavan , Oncel C. Tuzel , Aswin Sankaranarayanan , Amit K. Agrawal
发明人： Ashok Veeraraghavan , Oncel C. Tuzel , Aswin Sankaranarayanan , Amit K. Agrawal
IPC分类号： G06K9/46 , H03F1/26
CPC分类号： G06K9/4661 , G06T7/64 , G06T2207/10016
摘要： Embodiments of the invention disclose a system and a method for determining points of parabolic curvature on a surface of a specular object from a set of images of the object is acquired by a camera under a relative motion between a camera-object pair and the environment. The method determines directions of image gradients at each pixel of each image in the set of images, wherein pixels from different images corresponding to an identical point on the surface of the object form corresponding pixels. The corresponding pixels having substantially constant the direction of the image gradients are selected as pixels representing points of the parabolic curvature.
摘要翻译：本发明的实施例公开了一种用于从相机对象和环境之间的相对运动的相机获取用于从对象的一组图像确定镜面物体的表面上的抛物线曲率点的系统和方法。该方法确定图像集合中每个图像的每个像素处的图像梯度的方向，其中对应于对象表面上的相同点的不同图像的像素形成相应的像素。选择基本上恒定图像梯度方向的对应像素作为代表抛物面曲率点的像素。

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