Apparatus for detecting a cut in a video
First Claim
Patent Images
1. A method for detecting a cut in a video, comprising the steps of:
- (a) acquiring video images from a source;
(b) deriving from said video images a pixel-based difference metric;
(c) deriving from said video images a distribution-based difference metric;
(d) measuring video content of said video images to provide up-to-date test criteria by collecting statistics from each DC image and each pair of DC images to represent current video content, being an image contrast and a motion estimate;
(e) combining said pixel-based difference metric and said distribution-based difference metric, taking into account said up-to-date test criteria provided in step (d) to derive a scene change candidate signal; and
(f) filtering said scene change candidate signal to generate a scene change frame list.
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Abstract
Apparatus for detecting a cut in a video comprises arrangements for acquiring video images from a source, for deriving from the video images a pixel-based difference metric, for deriving from the video images a distribution-based difference metric, and for measuring video content of the video images to provide up-to-date test criteria. Arrangements are included for combining the pixel-based difference metric and the distribution-based difference metric, taking into account the up-to-date test criteria provided so as to derive a scene change candidate signal and for filtering the scene change candidate signal so as to generate a scene change frame list.
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Citations
25 Claims
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1. A method for detecting a cut in a video, comprising the steps of:
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(a) acquiring video images from a source; (b) deriving from said video images a pixel-based difference metric; (c) deriving from said video images a distribution-based difference metric; (d) measuring video content of said video images to provide up-to-date test criteria by collecting statistics from each DC image and each pair of DC images to represent current video content, being an image contrast and a motion estimate; (e) combining said pixel-based difference metric and said distribution-based difference metric, taking into account said up-to-date test criteria provided in step (d) to derive a scene change candidate signal; and (f) filtering said scene change candidate signal to generate a scene change frame list. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. Apparatus for detecting a cut in a video, comprising:
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(a) means for acquiring video images from a source; (b) means for deriving from said video images a pixel-based difference metric; (c) means for deriving from said video images a distribution-based difference metric; (d) means for measuring video content of said video images to provide up-to-date test criteria; (e) means for combining said pixel-based difference metric and said distribution-based difference metric, taking into account said up-to-date test criteria provided in step (d) so as to derive a scene change candidate signal; (f) means for filtering said scene change candidate signal so as to generate a scene change frame list; and (g) means for presenting two cross-section images of said video images, wherein one is a horizontal cross section image in a horizontal direction and the other is a vertical cross section image in a vertical direction of the video volume. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification