摘要:
A system and method that processes video to extract a keyframe-based adequate visual representation. The method utilizes a hierarchical processing technique. The first stage in the hierarchy extracts a chromatic difference metric from a pair of video frames. An initial set of frames is chosen based on the chromatic metric and a threshold. A structural difference measurement is extracted from this initial set of frames. A second threshold is used to select key frames from the initial set. The first and second thresholds are user selectable. The output of this process is the visual representation. The method is extensible to any number of metrics and any number of levels.
摘要:
One aspect of the invention is directed to a system and method for video cataloging. The video is cataloged according to predefined or user definable metadata. The metadata is used to index and then retrieve encoded video. Video feature extractors produce metadata tracks from the video information, and each metadata track indexes the stored video information. A feature extractor registration interface registers the video feature extractors, providing for registration with the video engine of new video feature extractors with new metadata tracks.
摘要:
A system and method that processes video to extract a keyframe-based adequate visual representation is disclosed. Certain embodiments utilize a hierarchical processing technique. A first stage in the hierarchy extracts a chromatic difference metric from a pair of video frames. An initial set of frames is chosen based on the chromatic metric and a threshold. A structural difference measurement is extracted from this initial set of frames. A second threshold is used to select key frames from the initial set. The first and second thresholds can be user selectable. The output of this process is the visual representation. The method is extensible to any number of metrics and any number of levels.
摘要:
A system and method that processes video to extract a keyframe-based adequate visual representation. The method utilizes a hierarchical processing technique. The first stage in the hierarchy extracts a chromatic difference metric from a pair of video frames. An initial set of frames is chosen based on the chromatic metric and a threshold. A structural difference measurement is extracted from this initial set of frames. A second threshold is used to select key frames from the initial set. The first and second thresholds are user selectable. The output of this process is the visual representation. The method is extensible to any number of metrics and any number of levels.
摘要:
One aspect of the invention is directed to a system and method for video cataloging. The video is cataloged according to predefined or user definable metadata. The metadata is used to index and then retrieve encoded video.
摘要:
One aspect of the invention is directed to a system and method for video cataloging. The video is cataloged according to predefined or user definable metadata. The metadata is used to index and then retrieve encoded video. In one embodiment, the video is cataloged concurrently with encoding of the video.
摘要:
A system and method that processes video to extract a keyframe-based adequate visual representation is disclosed. Certain embodiments utilize a hierarchical processing technique. A first stage in the hierarchy extracts a chromatic difference metric from a pair of video frames. An initial set of frames is chosen based on the chromatic metric and a threshold. A structural difference measurement is extracted from this initial set of frames. A second threshold is used to select key frames from the initial set. The first and second thresholds can be user selectable. The output of this process is the visual representation. The method is extensible to any number of metrics and any number of levels.
摘要:
One aspect of the invention is directed to a system and method for video cataloging. The video is cataloged according to predefined or user definable metadata. The metadata is used to index and then retrieve encoded video. In another aspect of the invention, video metadata track processors convert metadata tracks of the video information to produce displayable frames containing hyperlinking between displayable data. Another aspect of the invention is directed to a method of browsing stored video information, including displaying hyperlinked frames of metadata track representations, and selecting and displaying links between displayable frames.
摘要:
One aspect of the invention is directed to a system and method for video cataloging. The video is cataloged according to predefined or user definable metadata. The metadata is used to index and then retrieve encoded video.
摘要:
A digital capture system, such as a digital still camera or digital video recorder, has an embedded real-time content-based analysis function in the capture device to extract metadata from the digital signals. In one embodiment, metadata (descriptive information about the digital content) is formatted and stored separately from the content. In another embodiment, the metadata may be formatted and combined with the digital content in a container format such as MPEG-7, QuickTime, or FlashPix.