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公开(公告)号：US08837778B1
公开(公告)日：2014-09-16
申请号：US13486664
申请日：2012-06-01
申请人： Samuel Henry Chang , Ning Yao
发明人： Samuel Henry Chang , Ning Yao
IPC分类号： G06K9/00
CPC分类号： G06F3/0304 , G06F3/017 , G06T7/251 , G06T7/75 , G06T2200/04 , G06T2207/10028
摘要： Techniques are described for tracking the pose of a surface based on a point set representing the surface. Sequential observed poses of the surface are used as the basis for creating a mathematical model of the motion of the surface. Future motion of the surface may be predicted based on the mathematical model.
摘要翻译： 描述了基于表示表面的点集来跟踪表面的姿态的技术。 使用表面的顺序观察姿势作为创建表面运动的数学模型的基础。 表面的未来运动可以基于数学模型来预测。
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公开(公告)号：US09704027B1
公开(公告)日：2017-07-11
申请号：US13405621
申请日：2012-02-27
申请人： Samuel Henry Chang , Sowmya Gopalan , Ning Yao , Yuhua Zhu
发明人： Samuel Henry Chang , Sowmya Gopalan , Ning Yao , Yuhua Zhu
CPC分类号： G06K9/00355 , G06K9/2036 , G06K2209/21 , G06K2209/401 , G06T7/20 , G06T2207/30196
摘要： A hand gesture may be characterized mathematically as a set of motion parameters applied to a dynamic motion model. Training may be conducted to compile a library of motion parameter sets corresponding to various gestures. Motion parameters corresponding to observed gestures may than be compared to the library of motion parameter sets to classify the observed gestures.
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公开(公告)号：US09456187B1
公开(公告)日：2016-09-27
申请号：US13486634
申请日：2012-06-01
申请人： Qiang Liu , Samuel Henry Chang , Ning Yao
发明人： Qiang Liu , Samuel Henry Chang , Ning Yao
摘要： Techniques are described for determining the pose of a surface based on a point set representing the surface. Corner models are matched to a contour of the point set using a difference minimization technique to identify corner poses of the surface. Based on the corner poses, a virtual model of the surface is created and matched to the point set to determine the pose of the surface.
摘要翻译： 描述了基于表示表面的点集来确定表面姿态的技术。 使用差分最小化技术将拐角模型与点集的轮廓相匹配，以识别表面的角姿势。 基于角姿势，创建表面的虚拟模型并将其与点集合相匹配，以确定曲面的姿态。
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公开(公告)号：US09055237B1
公开(公告)日：2015-06-09
申请号：US13486710
申请日：2012-06-01
申请人： Samuel Henry Chang , Weijian Wang
发明人： Samuel Henry Chang , Weijian Wang
CPC分类号： H04N9/31 , G03B15/14 , G03B17/54 , G03B21/53 , H04N9/3185 , H04N9/3194
摘要： Techniques are described for projecting content onto surfaces and for focusing the content. When content is projected by a projector onto a surface, the surface is observed by a camera or other sensor, and the contrast of the projected content is evaluated. The projector then varies its focal point to improve or maximize the observed contrast of the projected content.
摘要翻译： 描述了将内容投影到表面上并用于聚焦内容的技术。 当内容由投影仪投影到表面上时，通过相机或其他传感器观察表面，并评估投影内容的对比度。 然后投影机改变其焦点，以改善或最大化观察到的投影内容的对比度。
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15.发明授权Recursive least squares approach to calculate motion parameters for a moving camera 有权递归最小二乘法计算运动摄像机的运动参数公开(公告)号：US07333133B2
公开(公告)日：2008-02-19
申请号：US10814711
申请日：2004-03-31
摘要： A method and system for estimating camera motion parameters and determining a filter to correct for camera motion errors. The estimating method and system includes obtaining an observation point set including a plurality of observed point vectors, computing a plurality of motion output vectors by performing a recursive least squares (RLS) process based on a plurality of motion parameter vectors, and comparing the plurality of motion output vectors to the plurality of observed point vectors. The filter determining method and system includes determining a plurality of desired motion point vectors, computing a plurality of estimated motion point vectors by means of an RLS algorithm, and computing the filter based on a difference between the plurality of estimated motion point vectors and the plurality of desired motion point vectors.
摘要翻译： 用于估计摄像机运动参数并确定滤波器以校正摄像机运动误差的方法和系统。 所述估计方法和系统包括获得包括多个观察点向量的观测点集合，通过基于多个运动参数向量执行递归最小二乘法（RLS）处理来计算多个运动输出向量， 运动输出向量到多个观察点向量。 滤波器确定方法和系统包括确定多个期望的运动点矢量，借助RLS算法计算多个估计的运动点矢量，以及基于多个估计的运动点矢量与多个运动点矢量之间的差来计算滤波器 的所需运动点矢量。
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