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    • 3. 发明授权
    • Video merging employing pattern-key insertion
    • 视频合并采用模式键插入
    • US5923791A
    • 1999-07-13
    • US688688
    • 1996-07-29
    • Keith James HannaPeter Jeffrey Burt
    • Keith James HannaPeter Jeffrey Burt
    • H04N5/272H04N5/275G06K9/32G06K9/00G06K9/36G06K9/48
    • H04N5/2723H04N5/272H04N5/275
    • Disclosed is a technique for deriving a composite video image by merging foreground and background video image data supplied from a plurality of separate video signal sources employing pattern-key insertion, rather than prior-art color-key insertion, for this purpose. Pattern-key insertion involves replacing a first pattern in a video scene with a second pattern. This is accomplished by first detecting the first pattern in the video scene and estimating the pose of this detected first pattern with respect to a reference object in the video scene. The second pattern is then geometrically transformed using the pose estimate of the detected first pattern. Finally, the detected first pattern is replaced with the geometrically-transformed second pattern.
    • 公开了一种用于通过合并从多个分离的视频信号源提供的前景和背景视频图像数据而不是现有技术的色键插入的方法来导出复合视频图像的技术,为此目的。 模式键插入涉及用第二模式替换视频场景中的第一模式。 这通过首先检测视频场景中的第一图案并且相对于视频场景中的参考对象估计该检测到的第一图案的姿态来实现。 然后使用检测到的第一图案的姿态估计来对第二图案进行几何变换。 最后,用几何变换的第二图案替换检测到的第一图案。
    • 9. 发明授权
    • Method and apparatus for multi-view three dimensional estimation
    • 用于多视图三维估计的方法和装置
    • US06571024B1
    • 2003-05-27
    • US09336319
    • 1999-06-18
    • Harpreet Singh SawhneyRakesh KumarYanlin GuoJane AsmuthKeith James Hanna
    • Harpreet Singh SawhneyRakesh KumarYanlin GuoJane AsmuthKeith James Hanna
    • G06K932
    • G06T7/248G06T7/246G06T2207/10016G06T2207/30244
    • An apparatus and method for generating automated multi-view three dimensional pose and geometry estimation for the insertion of realistic and authentic views of synthetic objects into a real scene. A multi-view three dimensional estimation routine comprising the steps of feature tracking, pairwise camera pose estimation, computing camera pose for overlapping sequences and performing a global block adjustment to provide camera pose and scene geometric information for each frame of a scene. A match move routine may be used to insert a synthetic object into one frame of a video sequence based on the pose and geometric information of the frame, and calculate all other required object views of the synthetic object for the remaining frames using the pose and geometric information acquired as a result of the multi-view three dimensional estimation routine.
    • 一种用于产生用于将合成对象的真实和真实视图插入到真实场景中的自动多视图三维姿态和几何估计的装置和方法。 一种多视图三维估计程序,包括特征跟踪,配对摄像机姿态估计,重叠序列的计算摄像机姿态,以及执行全局块调整以为场景的每个帧提供摄像机姿态和场景几何信息的步骤。 可以使用匹配移动例程来基于帧的姿态和几何信息将合成对象插入到视频序列的一帧中,并且使用姿态和几何来计算剩余帧的合成对象的所有其他所需对象视图 作为多视图三维估计程序的结果获取的信息。