Browsing Sport Content through an Interactive H.264 Streaming Session
Browsing Sport Content through an Interactive H.264 Streaming Session
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通过交互式 H.264 流媒体会话浏览体育内容
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
C. Vleeschouwer
中科院分区：
文献类型：
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作者：
I. Fernandez;Fan Chen;F. Lavigne;X. Desurmont;C. Vleeschouwer
本文建立在一个交互式的流媒体架构，支持用户反馈的解释，并在一个单一的流媒体会话中的多个视频比特流的时间并列。作为一个原始的贡献，这些功能可以被利用来提供更好的观看体验，当访问足球内容通过个人和潜在的带宽受限的连接。从传统的广播内容开始，我们的系统自动将原生内容分成不重叠和语义一致的片段。然后，基于传统的视图边界检测，将每个片段划分为镜头。镜头最终被分割成小片段。这些剪辑在整个播放过程中以时间一致的方式支持我们的浏览功能。系统会自动创建多个版本来渲染每个剪辑。版本控制取决于初始镜头的视图类型，并且通常对应于放大和空间或时间子采样视频流的生成。剪辑是独立编码的，以便服务器可以根据片段的语义相关性（在用户透明的基础上，根据视频分析或元数据推断）和交互式用户请求动态决定要发送的版本。某些游戏动作的重播也可应要求提供。流媒体将自动切换到所请求的事件。稍后，回放恢复，没有任何偏移。我们的系统的能力依赖于H.264/AVC标准。我们使用足球视频来验证我们的框架在主观实验中显示我们的系统的可行性和相关性。
This paper builds on an interactive streaming architecture that supports both user feedback interpretation, and temporal juxtaposition of multiple video bitstreams in a single streaming session. As an original contribution, these functionalities can be exploited to offer improved viewing experience, when accessing football content through individual and potentially bandwidth constrained connections. Starting from a conventional broadcasted content, our system automatically splits the native content into non-overlapping and semantically consistent segments. Each segment is then divided into shots, based on conventional view boundary detection. Shots are finally splitted in small clips. These clips support our browsing capabilities during the whole playback in a temporally consistent way. Multiple versions are automatically created to render each clip. Versioning depends on the view type of the initial shot, and typically corresponds to the generation of zoomed in and spatially or temporally subsampled video streams. Clips are encoded independently so that the server can decide on the fly the version to send as a function of the semantic relevance of the segments (in a user-transparent basis, as inferred from video analysis or metadata) and the interactive user requests. Replaying certain game actions is also offered upon request. The streaming is automatically switched to the requested event. Later, the playback is resumed without any offset. The capabilities of our system rely on the H.264/AVC standard. We use soccer videos to validate our framework in subjective experiments showing the feasibility and relevance of our system.