EP0637027A2
Expired / Lapsed
EP
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Detecting scene cuts in video processing
Assignee: HP Inc
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Filing: 1994-07-25
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Granted: —
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Expires: 2014-07-25
Abstract
Abstract A method for detecting scene cuts in a motion picture, which comprises a plurality of frames in a sequential order. The preferred embodiment of the present invention utilizes the correlation between successive frames to detect abrupt cuts. Gradual cuts are preferably detected by examining a function consisting of the standard deviation of the pixels of each frame as a function of the frame number.
Inventors
- 👤 Monica Medina-Puri
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 13:49
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/14; H04N5/147; G; G06; G06T; G06T7/00; G06T7/20; G11; G11B; G11B27/00; G11B27/02; G11B27/031; G11B27/10; G11B27/19; G11B27/28; H04N19/00; H04N19/10; H04N19/134; H04N19/142; H04N19/169; H04N19/179; H04N19/85; H04N19/87; H04N5/144
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
84 words
A method for detecting scene cuts in a motion picture, said motion picture comprising an ordered sequence of frames, each said frame comprising a plurality of intensity values, said method comprising the steps of determining a correlation value of each frame with a corresponding previous frame, said previous frame being separated in said sequence by a predetermined number of frames; comparing said correlation value with a threshold value; and reporting an abrupt scene change if said correlation value is less than said threshold value.
Claim 2
Dependent Claim
15 words
The method of Claim 1 wherein said predetermined number of frames is equal to one.
Claim 3
Dependent Claim
49 words
The method of Claim 1 further comprising the steps of determining a statistical measure for each said frame; and detecting changes in the value of said statistical measure as a function of the frame number and; reporting a gradual scene change if said detected changes match a predetermined pattern.
Claim 4
Dependent Claim
19 words
The method of Claim 3 wherein said statistical measure is a function of the variance of said intensity values.
Claim 5
Dependent Claim
16 words
The method of Claim 3 wherein said statistical measure is a moment of said intensity values.
Claim 6
Dependent Claim
23 words
The method of Claim 3 wherein said predetermined pattern is a peak in said statistical measure as a function of the frame number.
Claim 7
Dependent Claim
43 words
The method of Claim 3 wherein said predetermined pattern is a ramp connecting two regions in said function, said regions of a variation of said statistical measure less than the difference in said statistical measure between the beginning and end of said ramp.
References Cited (Backward Citations)
No citation records indexed.
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