专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06677956B2 Method for cross-fading intensities of multiple images of a scene for seamless reconstruction 有权
标题翻译：用于无缝重建的场景的多个图像的交叉衰落强度的方法
公开(公告)号：US06677956B2
公开(公告)日：2004-01-13
申请号：US09929980
申请日：2001-08-15
申请人： Ramesh Raskar , Gregory F. Welch , Kok-Lim Low
发明人： Ramesh Raskar , Gregory F. Welch , Kok-Lim Low
IPC分类号： G09G500
CPC分类号： G06T15/503
摘要： A computer implemented method cross-fades intensities of a plurality of overlapping images by identifying pixels in a target image that are only produced by a first source image. The weights of all the corresponding pixels in the first source image are set to one. Pixels in a second source images contributing to the target image are similarly identified and set to one. the weight of each remaining pixel in the first and second images is inversely proportional to a distance to a nearest pixel having a weight of one. Then, the first and second source image can be projected to form the target image.
摘要翻译：计算机实现的方法通过识别仅由第一源图像产生的目标图像中的像素来交叉地消除多个重叠图像的强度。将第一源图像中的所有相应像素的权重设置为1。类似地识别贡献于目标图像的第二源图像中的像素并将其设置为1。第一和第二图像中的每个剩余像素的重量与具有权重为1的最近像素的距离成反比。然后，可以投影第一和第二源图像以形成目标图像。

2. 发明授权

US07068274B2 System and method for animating real objects with projected images 失效
公开(公告)号：US07068274B2
公开(公告)日：2006-06-27
申请号：US09930322
申请日：2001-08-15
申请人： Gregory F. Welch , Kok-Lim Low , Ramesh Raskar
发明人： Gregory F. Welch , Kok-Lim Low , Ramesh Raskar
IPC分类号： G06T15/50
CPC分类号： G06T15/50 , G06T13/20 , G06T2200/08
摘要： A computer implemented method animates a 3D physical object by first acquiring a 3D graphics model of the object. The model is edited with graphics authoring tools to reflect a desired appearance of the object. The edited model is rendered as an image considering a user location and a location of a virtual light. Then, intensity values of the image are corrected according to an orientation of a surface of the object and a radiance at the surface. The 3D physical object can finally be illuminated with the corrected image to give the 3D physical object the desired appearance under the virtual light when viewed from the user location.

3. 发明授权

US06930681B2 System and method for registering multiple images with three-dimensional objects 失效
标题翻译：用三维物体登记多张图像的系统和方法
公开(公告)号：US06930681B2
公开(公告)日：2005-08-16
申请号：US09930430
申请日：2001-08-14
申请人： Ramesh Raskar , Gregory F. Welch , Kok-Lim Low
发明人： Ramesh Raskar , Gregory F. Welch , Kok-Lim Low
IPC分类号： G06T15/00
CPC分类号： G06T15/005
摘要： A computer implemented method registers an image with a 3D physical object by first acquiring a 3D graphics model of an object. Multiple 3D calibration points a surface of the object and corresponding 3D model calibration points in the 3D graphics model are identified. The object is illuminated with a calibration image using a projector at a fixed location. The calibration image is aligned with each of the 3D calibration points on the surface of the 3D physical object to identify corresponding 2D pixels in the calibration image, and then a transformation between the 2D calibration pixels and the corresponding 3D model calibration points is determined to register the projector with the 3D physical object.
摘要翻译：计算机实现的方法通过首先获取对象的3D图形模型来注册具有3D物体的图像。识别3D图形模型中多个3D校准点对象的表面和相应的3D模型校准点。使用投影仪在固定位置的校准图像照亮物体。校准图像与3D物理物体表面上的每个3D校准点对准，以识别校准图像中的相应2D像素，然后确定2D校准像素与相应的3D模型校准点之间的变换以进行注册该投影机具有3D物体。

4. 发明授权

US06747651B1 System and method for creating bounding volume hierarchies utilizing model simplification 有权
标题翻译：利用模型简化创建边界体层次的系统和方法
公开(公告)号：US06747651B1
公开(公告)日：2004-06-08
申请号：US09743921
申请日：2001-04-04
申请人： Tiow Seng Tan , Ket Fah Chong , Kok Lim Low
发明人： Tiow Seng Tan , Ket Fah Chong , Kok Lim Low
IPC分类号： G06T1570
CPC分类号： G06T15/50 , G06T17/005
摘要： This invention integrates model simplification and bounding volume hierarchy construction for collision detection in interactive 3D graphics. In particular, it provides general framework and a preferred method to construct bounding volume hierarchy using outputs of model simplification. Simplified models, besides their application to multi-resolution rendering, can provide clues to the shape of the input object. These clues help in the partitioning of the object's model into components that may be more tightly bounded by simple bounding volumes. The framework and method naturally employ both the bottom-up and the top-down approaches of hierarchy building, and thus can have the advantages of both approaches. The framework and method includes the steps of simplified models generation, component derivation, component tree generation, and bounding volume hierarchy generation. The operation of the method includes the steps of interactively computing, displaying and recording simplified models and bounding volume hierarchy in response to user commands. Ray tracing and collision detection may be efficiently performed using the bounding volume hierarchy generated by the invention.
摘要翻译：本发明整合了交互式3D图形中的碰撞检测的模型简化和边界体积层次结构。特别地，它提供了一般框架和使用模型简化的输出来构建边界体层次结构的优选方法。简化的模型除了应用于多分辨率渲染之外，还可以为输入对象的形状提供线索。这些线索有助于将对象的模型划分为可能由简单的边界卷更紧密地界定的组件。框架和方法自然采用层次结构的自下而上和自上而下的方法，从而具有两种方法的优点。框架和方法包括简化模型生成，组件导出，组件树生成和边界卷层次生成的步骤。该方法的操作包括响应于用户命令交互地计算，显示和记录简化模型和界限体积层级的步骤。可以使用由本发明生成的边界体积层次来有效地执行光线跟踪和碰撞检测。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式