Video/audio signal processing method and video/audio signal processing apparatus
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Abstract
A metadata extraction unit has a feature point selection and motion estimation unit 62 for extracting at least one feature point representing characteristics of the video/audio signals in a compressed domain of the video/audio signals. Thus, reduction of time or cost for processing can be realized and it makes it possible to process effectively.
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Citations
57 Claims
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1-52. -52. (canceled)
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53. A method for processing and browsing supplied video/audio signals, comprising the steps of:
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building hierarchically a camera motion transition graph, wherein the graph building step includes the step of providing a graph layout having at least one main camera motion transition graph and having a plurality of nodes representing other camera motion with the transition paths illustrated for a video sequence;
browsing through the camera motion transition graph by depicting keyframes of a camera motion video sequence at the nodes; and
browsing through the camera motion transition graph by depicting a graph representation of the camera motion at the nodes.
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54. An apparatus for processing and browsing supplied video/audio signals, comprising:
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means for building hierarchically a camera motion transition graph, wherein the graph building means includes the step of providing a graph layout having at least one main camera motion transition graph and having a plurality of nodes representing other camera motion with the transition paths illustrated for a video sequence;
means for browsing through the camera motion transition graph by depicting keyframes of a camera motion video sequence at the nodes; and
means for browsing through the camera motion transition graph by depicting a graph representation of the camera motion at the nodes.
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55. A method for extracting a hierarchical decomposition of a complex video selection for browsing, comprising the steps of:
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identifying video;
collecting key frames from said video shots for representing each video segment;
classifying the collections of key frames according to camera motion or global motion information; and
building a graphical representation of the video, the graphical representation being based upon the results of said classifying step, temporal as well as camera motion information associated with each part of a video shot, wherein said graphical representation building step includes the step of representing each category of video shot by node.
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56. An apparatus for extracting a hierarchical decomposition of a complex video selection for browsing, comprising:
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means for identifying video;
means for collecting key frames from said video shots for representing each video segment;
means for classifying the collections of key frames according to camera motion or global motion information; and
means for building a graphical representation of the video, the graphical representation being based upon the results of said classifying step, temporal as well as camera motion information associated with each part of a video shot, wherein said graphical representation building step includes means for representing each category of video shot by node.
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57-92. -92. (canceled)
Specification