Patent EP0637027A2 successfully refreshed from Google Patents.
EP0637027A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Detecting scene cuts in video processing
Assignee: HP Inc
•
Filing: 1994-07-25
•
Granted: —
•
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
2026-10-31 08:08
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.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.