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    • 1. 发明申请
    • PRACTICAL TEMPORAL CONSISTENCY FOR VIDEO APPLICATIONS
    • 视频应用的实践时间一致性
    • US20140146235A1
    • 2014-05-29
    • US13686684
    • 2012-11-27
    • Aljosa Aleksej Andrej SmolicOliver WangManuel Lang
    • Aljosa Aleksej Andrej SmolicOliver WangManuel Lang
    • H04N5/14
    • H04N5/147H04N5/145
    • A video sequence having a plurality of frames is received. A feature in a first frame from the plurality of frames and a first position of the feature in the first frame are detected. The position of the feature in a second frame from the plurality of frames is estimated to determine a second position. A displacement vector between the first position and the second position is also computed. A plurality of content characteristics is determined for the first frame and the second frame. The displacement vector is spatially diffused with a spatial filter over a frame from the plurality of frames to generate a spatially diffused displacement vector field. The spatial filter utilizes the plurality of content characteristics. A temporal filter temporally diffuses over a video volume the spatially diffused displacement vector field to generate a spatiotemporal vector field. The temporal filter utilizes the plurality of content characteristics.
    • 接收具有多个帧的视频序列。 检测来自多个帧的第一帧中的特征和第一帧中的特征的第一位置。 估计来自多个帧的第二帧中的特征的位置以确定第二位置。 还计算第一位置和第二位置之间的位移矢量。 为第一帧和第二帧确定多个内容特征。 位移矢量与来自多个帧的帧上的空间滤波器空间扩散,以产生空间扩散的位移矢量场。 空间滤波器利用多个内容特征。 时间滤波器在时间上在视频体积上扩散空间扩散的位移矢量场以产生时空矢量场。 时间滤波器利用多个内容特征。
    • 8. 发明授权
    • Art-directable retargeting for streaming video
    • 用于流式视频的Art-directable重定向
    • US08717390B2
    • 2014-05-06
    • US12552224
    • 2009-09-01
    • Markus GrossAlexander HornungManuel LangPhilipp Kraehenbuehl
    • Markus GrossAlexander HornungManuel LangPhilipp Kraehenbuehl
    • G09G5/00
    • G06T3/0012
    • An integrated system and method for content-aware video retargeting. An interactive framework combines key frame-based constraint editing with numerous automatic algorithms for video analysis. This combination gives content producers a high level of control of the retargeting process. One component of the framework is a non-uniform, pixel-accurate warp to the target resolution that considers automatic as well as interactively-defined features. Automatic features comprise video saliency, edge preservation at the pixel resolution, and scene cut detection to enforce bilateral temporal coherence. Additional high level constraints can be added by the producer to achieve a consistent scene composition across arbitrary output formats. Advantageously, embodiments of the invention provide a better visual result for retargeted video when compared to using conventional techniques.
    • 用于内容感知视频重定向的集成系统和方法。 交互式框架将基于关键帧的约束编辑与许多用于视频分析的自动算法相结合。 这种组合为内容制作者提供了重新定位过程的高度控制。 框架的一个组成部分是一个不均匀,像素精确的扭曲到目标分辨率,考虑到自动和交互式定义的特征。 自动功能包括视频显着性,像素分辨率的边缘保留,以及场景切割检测,以实现双向时间一致性。 制造商可以添加额外的高级限制,以实现任意输出格式的一致的场景组合。 有利的是,与使用常规技术相比,本发明的实施例为重新定向的视频提供了更好的视觉效果。
    • 9. 发明授权
    • Art-directable retargeting for streaming video
    • 用于流式视频的Art-directable重定向
    • US08373802B1
    • 2013-02-12
    • US12552226
    • 2009-09-01
    • Markus GrossAlexander HornungManuel LangPhilipp Kraehenbuehl
    • Markus GrossAlexander HornungManuel LangPhilipp Kraehenbuehl
    • H04N9/64
    • G06T3/0012G06T3/4007G06T11/00G11B27/034
    • Techniques are provided for content-aware video retargeting. An interactive framework combines key frame-based constraint editing with numerous automatic algorithms for video analysis. This combination gives content producers a high level of control of the retargeting process. One component of the framework is a non-uniform, pixel-accurate warp to the target resolution that considers automatic as well as interactively-defined features. Automatic features comprise video saliency, edge preservation at the pixel resolution, and scene cut detection to enforce bilateral temporal coherence. Additional high level constraints can be added by the producer to achieve a consistent scene composition across arbitrary output formats. Advantageously, embodiments of the invention provide a better visual result for retargeted video when compared to using conventional techniques.
    • 为内容感知视频重新定位提供了技术。 交互式框架将基于关键帧的约束编辑与许多用于视频分析的自动算法相结合。 这种组合为内容制作者提供了重新定位过程的高度控制。 框架的一个组成部分是一个不均匀,像素精确的扭曲到目标分辨率,考虑到自动和交互式定义的特征。 自动功能包括视频显着性,像素分辨率的边缘保留,以及场景切割检测,以实现双向时间一致性。 制造商可以添加额外的高级限制,以实现任意输出格式的一致的场景组合。 有利的是,与使用常规技术相比,本发明的实施例为重新定向的视频提供了更好的视觉效果。