利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

139 条记录 (耗时 0.026 秒)

    Digital Refocusing for Wide-Angle Images Using Axial-Cone Cameras
    1.
    发明申请
    Digital Refocusing for Wide-Angle Images Using Axial-Cone Cameras 有权
    使用轴向相机的广角图像的数字重新对焦

    公开(公告)号：US20110316968A1

    公开(公告)日：2011-12-29

    申请号：US12825608

    申请日：2010-06-29

    申请人： Yuichi Taguchi ,  Amit K. Agrawal ,  Ashok N. Veeraraghavan ,  Srikumar Ramalingam ,  Ramesh Raskar

    发明人： Yuichi Taguchi ,  Amit K. Agrawal ,  Ashok N. Veeraraghavan ,  Srikumar Ramalingam ,  Ramesh Raskar

    IPC分类号： H04N7/00

    CPC分类号： G06T5/50 ,  G06T2200/21 ,  G06T2207/10052 ,  H04N5/23238

    摘要： A single camera acquires an input image of a scene as observed in an array of spheres, wherein pixels in the input image corresponding to each sphere form a sphere image. A set of virtual cameras are defined for each sphere on a line joining a center of the sphere and a center of projection of the camera, wherein each virtual camera has a different virtual viewpoint and an associated cone of rays, appearing as a circle of pixels on its virtual image plane. A projective texture mapping of each sphere image is applied to all of the virtual cameras on the virtual image plane to produce a virtual camera image comprising circle of pixels. Each virtual camera image for each sphere is then projected to a refocusing geometry using a refocus viewpoint to produce a wide-angle lightfield view, which are averaged to produce a refocused wide-angle image.

    摘要翻译： 单个相机获取在球体阵列中观察到的场景的输入图像，其中与每个球体对应的输入图像中的像素形成球面图像。 在连接球体中心的线和摄像机的投影中心的线上为每个球体定义一组虚拟照相机，其中每个虚拟照相机具有不同的虚拟视点和相关联的光线锥，呈现为像素圆 在其虚拟图像平面上。 每个球体图像的投影纹理映射被应用于虚拟图像平面上的所有虚拟相机，以产生包括像素圆的虚拟相机图像。 然后使用重聚焦点将每个球体的每个虚拟照相机图像投影到重聚焦几何，以产生广角光场视图，其被平均以产生重新聚焦的广角图像。

    Digital refocusing for wide-angle images using axial-cone cameras
    2.
    发明授权
    Digital refocusing for wide-angle images using axial-cone cameras 有权
    使用轴向锥形相机对广角图像进行数字重新对焦

    公开(公告)号：US08493432B2

    公开(公告)日：2013-07-23

    申请号：US12825608

    申请日：2010-06-29

    申请人： Yuichi Taguchi ,  Amit K. Agrawal ,  Ashok N. Veeraraghavan ,  Srikumar Ramalingam ,  Ramesh Raskar

    发明人： Yuichi Taguchi ,  Amit K. Agrawal ,  Ashok N. Veeraraghavan ,  Srikumar Ramalingam ,  Ramesh Raskar

    IPC分类号： H04N7/00

    CPC分类号： G06T5/50 ,  G06T2200/21 ,  G06T2207/10052 ,  H04N5/23238

    摘要： A single camera acquires an input image of a scene as observed in an array of spheres, wherein pixels in the input image corresponding to each sphere form a sphere image. A set of virtual cameras are defined for each sphere on a line joining a center of the sphere and a center of projection of the camera, wherein each virtual camera has a different virtual viewpoint and an associated cone of rays, appearing as a circle of pixels on its virtual image plane. A projective texture mapping of each sphere image is applied to all of the virtual cameras on the virtual image plane to produce a virtual camera image comprising circle of pixels. Each virtual camera image for each sphere is then projected to a refocusing geometry using a refocus viewpoint to produce a wide-angle lightfield view, which are averaged to produce a refocused wide-angle image.

    摘要翻译： 单个相机获取在球体阵列中观察到的场景的输入图像，其中与每个球体对应的输入图像中的像素形成球面图像。 在连接球体中心的线和摄像机的投影中心的线上为每个球体定义一组虚拟照相机，其中每个虚拟照相机具有不同的虚拟视点和相关联的光线锥，呈现为像素圆 在其虚拟图像平面上。 每个球体图像的投影纹理映射被应用于虚拟图像平面上的所有虚拟相机，以产生包括像素圆的虚拟相机图像。 然后使用重聚焦点将每个球体的每个虚拟照相机图像投影到重聚焦几何，以产生广角光场视图，其被平均以产生重新聚焦的广角图像。

    4D Light Field Cameras
    3.
    发明申请
    4D Light Field Cameras 有权
    4D光场相机

    公开(公告)号：US20100265386A1

    公开(公告)日：2010-10-21

    申请号：US12826868

    申请日：2010-06-30

    申请人： Ramesh Raskar ,  Amit K. Agrawal

    发明人： Ramesh Raskar ,  Amit K. Agrawal

    IPC分类号： H04N5/225

    CPC分类号： G02B27/0075

    摘要： A camera acquires a 4D light field of a scene. The camera includes a lens and sensor. A mask is arranged in a straight optical path between the lens and the sensor. The mask including an attenuation pattern to spatially modulate the 4D light field acquired of the scene by the sensor. The pattern has a low spatial frequency when the mask is arranged near the lens, and a high spatial frequency when the mask is arranged near the sensor.

    摘要翻译： 相机获取场景的4D光场。 相机包括镜头和传感器。 掩模布置在透镜和传感器之间的直线光路中。 掩模包括用于空间调制由传感器获取的场景的4D光场的衰减图案。 当掩模布置在透镜附近时，图案具有低空间频率，当掩模布置在传感器附近时，该图案具有高的空间频率。

    4D light field cameras
    5.
    发明授权
    4D light field cameras 有权
    4D光场相机

    公开(公告)号：US07965936B2

    公开(公告)日：2011-06-21

    申请号：US12826868

    申请日：2010-06-30

    申请人： Ramesh Raskar ,  Amit K. Agrawal

    发明人： Ramesh Raskar ,  Amit K. Agrawal

    IPC分类号： G03B13/00

    CPC分类号： G02B27/0075

    摘要： A camera acquires a 4D light field of a scene. The camera includes a lens and sensor. A mask is arranged in a straight optical path between the lens and the sensor. The mask including an attenuation pattern to spatially modulate the 4D light field acquired of the scene by the sensor. The pattern has a low spatial frequency when the mask is arranged near the lens, and a high spatial frequency when the mask is arranged near the sensor.

    摘要翻译： 相机获取场景的4D光场。 相机包括镜头和传感器。 掩模布置在透镜和传感器之间的直线光路中。 掩模包括用于空间调制由传感器获取的场景的4D光场的衰减图案。 当掩模布置在透镜附近时，图案具有低空间频率，当掩模布置在传感器附近时，该图案具有高的空间频率。

    Method and System for Locating and Picking Objects Using Active Illumination
    7.
    发明申请
    Method and System for Locating and Picking Objects Using Active Illumination 有权
    使用主动照明定位和拾取物体的方法和系统

    公开(公告)号：US20090116728A1

    公开(公告)日：2009-05-07

    申请号：US11936416

    申请日：2007-11-07

    申请人： Amit K. Agrawal ,  Ramesh Raskar

    发明人： Amit K. Agrawal ,  Ramesh Raskar

    IPC分类号： G06K9/00

    CPC分类号： B22D46/00 ,  B22D11/1265 ,  G06T7/74 ,  G06T7/75

    摘要： A method and system determines a 3D pose of an object in a scene. Depth edges are determined from a set of images acquired of a scene including multiple objects while varying illumination in the scene. The depth edges are linked to form contours. The images are segmented into regions according to the contours. An occlusion graph is constructed using the regions. The occlusion graph includes a source node representing an unoccluded region of an unoccluded object in scene. The contour associated with the unoccluded region is compared with a set of silhouettes of the objects, in which each silhouette has a known pose. The known pose of a best matching silhouette is selected as the pose of the unoccluded object.

    摘要翻译： 方法和系统确定场景中对象的3D姿态。 深度边缘由在场景中改变照明的包括多个对象的场景获取的一组图像确定。 连接深度边缘以形成轮廓。 根据轮廓将图像分割成多个区域。 使用这些区域构建闭塞图。 闭塞图包括表示场景中未被占用对象的未被占领区域的源节点。 将与未被占领区域相关联的轮廓与对象的一组轮廓进行比较，其中每个轮廓具有已知姿势。 选择最佳匹配轮廓的已知姿势作为未被占用对象的姿势。

    Method and system for locating and picking objects using active illumination
    8.
    发明授权
    Method and system for locating and picking objects using active illumination 有权
    使用有源照明定位和拾取物体的方法和系统

    公开(公告)号：US07983487B2

    公开(公告)日：2011-07-19

    申请号：US11936416

    申请日：2007-11-07

    申请人： Amit K. Agrawal ,  Ramesh Raskar

    发明人： Amit K. Agrawal ,  Ramesh Raskar

    IPC分类号： G06K9/00 ,  G06K9/34 ,  G06K9/40 ,  G06T15/50 ,  G09G5/00

    CPC分类号： B22D46/00 ,  B22D11/1265 ,  G06T7/74 ,  G06T7/75

    摘要： A method and system determines a 3D pose of an object in a scene. Depth edges are determined from a set of images acquired of a scene including multiple objects while varying illumination in the scene. The depth edges are linked to form contours. The images are segmented into regions according to the contours. An occlusion graph is constructed using the regions. The occlusion graph includes a source node representing an unoccluded region of an unoccluded object in scene. The contour associated with the unoccluded region is compared with a set of silhouettes of the objects, in which each silhouette has a known pose. The known pose of a best matching silhouette is selected as the pose of the unoccluded object.

    摘要翻译： 方法和系统确定场景中对象的3D姿态。 深度边缘由在场景中改变照明的包括多个对象的场景获取的一组图像确定。 连接深度边缘以形成轮廓。 根据轮廓将图像分割成多个区域。 使用这些区域构建闭塞图。 闭塞图包括表示场景中未被占用对象的未被占领区域的源节点。 将与未被占领区域相关联的轮廓与对象的一组轮廓进行比较，其中每个轮廓具有已知姿势。 选择最佳匹配轮廓的已知姿势作为未被占用对象的姿势。

    Increasing Object Resolutions from a Motion-Blurred Image
    9.
    发明申请
    Increasing Object Resolutions from a Motion-Blurred Image 有权
    从运动模糊图像增加对象分辨率

    公开(公告)号：US20080062287A1

    公开(公告)日：2008-03-13

    申请号：US11761516

    申请日：2007-06-12

    申请人： Amit K. Agrawal ,  Ramesh Raskar

    发明人： Amit K. Agrawal ,  Ramesh Raskar

    IPC分类号： H04N5/217

    CPC分类号： G03B17/00 ,  G06T3/4069 ,  G06T5/003 ,  G06T2207/20201 ,  H04N5/23248 ,  H04N5/2353

    摘要： The embodiments of the invention provide a method for increasing a resolution of a moving object in an image acquired of a scene by a camera. An image acquired of a scene including a moving object is temporally modulated, according to a temporally encoding pattern, while integrating the image in a camera sensor to produce a blurred input image. The blurred input image is resolved according to the temporally encoding pattern to produce an enhanced and deblurred output image in which the object has an increased resolution.

    摘要翻译： 本发明的实施例提供了一种用于增加通过照相机获取的场景中的运动物体的分辨率的方法。 在将照相机传感器中的图像整合以产生模糊的输入图像的同时，根据时间上的编码图案对包括移动物体的场景进行拍摄的图像进行时间上的调制。 模糊输入图像根据时间上的编码图案被解析，以产生增强的和去模糊的输出图像，其中对象具有增加的分辨率。