公开(公告)号：US20130010067A1

公开(公告)日：2013-01-10

申请号：US13179225

申请日：2011-07-08

Applicant: Ashok Veeraraghavan ,  Nitesh Shroff ,  Yuichi Taguchi ,  Cuneyt Oncel Tuzel

Inventor： Ashok Veeraraghavan ,  Nitesh Shroff ,  Yuichi Taguchi ,  Cuneyt Oncel Tuzel

IPC: H04N13/02

CPC classification number: H04N5/2226 ,  G01B11/22 ,  H04N13/271

Abstract: A dynamic scene is reconstructed as depths and an extended depth of field video by first acquiring, with a camera including a lens and sensor, a focal stack of the dynamic scene while changing a focal depth. An optical flow between the frames of the focal stack is determined, and the frames are warped according to the optical flow to align the frames and to generate a virtual static focal stack. Finally, a depth map and a texture map for each virtual static focal stack is generated using a depth from defocus, wherein the texture map corresponds to an EDOF image.

Abstract translation: 通过在改变焦点深度的同时，首先通过包括透镜和传感器的照相机获取动态场景的焦点堆叠来将动态场景重建为深度和扩展景深视频。 确定焦点堆叠的帧之间的光流，并且根据光流使帧变形以对准帧并产生虚拟静态焦点堆叠。 最后，使用从散焦的深度生成每个虚拟静态焦点堆叠的深度图和纹理图，其中纹理图对应于EDOF图像。

公开(公告)号：US08432434B2

公开(公告)日：2013-04-30

申请号：US13179225

申请日：2011-07-08

Applicant: Ashok Veeraraghavan ,  Nitesh Shroff ,  Yuichi Taguchi ,  Cuneyt Oncel Tuzel

Inventor： Ashok Veeraraghavan ,  Nitesh Shroff ,  Yuichi Taguchi ,  Cuneyt Oncel Tuzel

IPC: H04N13/02 ,  G06T15/00 ,  G06K9/00

CPC classification number: H04N5/2226 ,  G01B11/22 ,  H04N13/271

Abstract: A dynamic scene is reconstructed as depths and an extended depth of field video by first acquiring, with a camera including a lens and sensor, a focal stack of the dynamic scene while changing a focal depth. An optical flow between the frames of the focal stack is determined, and the frames are warped according to the optical flow to align the frames and to generate a virtual static focal stack. Finally, a depth map and a texture map for each virtual static focal stack is generated using a depth from defocus, wherein the texture map corresponds to an EDOF image.

Abstract translation: 通过在改变焦点深度的同时，首先通过包括透镜和传感器的照相机获取动态场景的焦点堆叠来将动态场景重建为深度和扩展景深视频。 确定焦点堆叠的帧之间的光流，并且根据光流使帧变形以对准帧并产生虚拟静态焦点堆叠。 最后，使用从散焦的深度生成每个虚拟静态焦点堆叠的深度图和纹理图，其中纹理图对应于EDOF图像。

公开(公告)号：US08165403B1

公开(公告)日：2012-04-24

申请号：US12950357

申请日：2010-11-19

Applicant: Srikumar Ramalingam ,  Ashok Veeraraghavan ,  Yuichi Taguchi ,  Cuneyt Oncel Tuzel ,  Nitesh Shroff

Inventor： Srikumar Ramalingam ,  Ashok Veeraraghavan ,  Yuichi Taguchi ,  Cuneyt Oncel Tuzel ,  Nitesh Shroff

IPC: G06K9/46 ,  H04N5/04 ,  G05B19/18

CPC classification number: G06T7/75 ,  G06T2207/10152 ,  G06T2207/30164

Abstract: A pose of an object is determine by acquiring sets of images of the object by a camera, wherein the object has a thread arranged on a surface such that a local region of the object appears substantially spherical, wherein the camera is at a different point of view for each set, and wherein each image in each set is acquired while the scene is illuminated from a different direction. A set of features is extracted from each image, wherein the features correspond to points on the surface having normals towards the camera. A parametric line is fitted to the points for each image, wherein the line lies on a plane joining a center of the camera and an axis of the object. Then, geometric constraints are applied to lines to determine the pose of the object.

Abstract translation: 通过摄像机获取物体的图像来确定物体的姿态，其中物体具有布置在表面上的线，使得物体的局部区域基本上呈球形，其中照相机处于不同点 并且其中当从不同方向照亮场景时获取每组中的每个图像。 从每个图像提取一组特征，其中特征对应于具有朝向相机的法线的表面上的点。 参数线适合于每个图像的点，其中线位于连接照相机的中心和物体轴线的平面上。 然后，将几何约束应用于线以确定对象的姿态。