CA2272064A1 - Method of processing a video stream - Google Patents

Method of processing a video stream Download PDF

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Publication number
CA2272064A1
CA2272064A1 CA002272064A CA2272064A CA2272064A1 CA 2272064 A1 CA2272064 A1 CA 2272064A1 CA 002272064 A CA002272064 A CA 002272064A CA 2272064 A CA2272064 A CA 2272064A CA 2272064 A1 CA2272064 A1 CA 2272064A1
Authority
CA
Canada
Prior art keywords
video stream
frames
pairs
processing
difference value
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002272064A
Other languages
French (fr)
Other versions
CA2272064C (en
Inventor
Nael Hirzalla
Paul Streatch
Roger Maclean
Rob Menard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
March Networks Corp
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CA002190785A external-priority patent/CA2190785A1/en
Application filed by Individual filed Critical Individual
Priority to CA002272064A priority Critical patent/CA2272064C/en
Publication of CA2272064A1 publication Critical patent/CA2272064A1/en
Application granted granted Critical
Publication of CA2272064C publication Critical patent/CA2272064C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/147—Scene change detection

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

A method of processing a video stream, involves contemporaneously selecting first and second pairs of frames in the video stream with a predetermined period. The second pairs of frames have a longer period than the first pairs. For each of the first and second pairs of frames, there is determined a difference value representing the number of pixels whose value has changed between the first and second frames of the pair. A particular logic level is generated depending on whether this difference value exceeds a predetermined threshold. The generated logic levels are then compared with a decision map to identify cuts in the video stream.
CA002272064A 1996-11-20 1997-11-20 Method of processing a video stream Expired - Lifetime CA2272064C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002272064A CA2272064C (en) 1996-11-20 1997-11-20 Method of processing a video stream

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CA2,190,785 1996-11-20
CA002190785A CA2190785A1 (en) 1996-11-20 1996-11-20 Method of processing a video stream
PCT/CA1997/000881 WO1998023085A1 (en) 1996-11-20 1997-11-20 Method of processing a video stream
CA002272064A CA2272064C (en) 1996-11-20 1997-11-20 Method of processing a video stream

Publications (2)

Publication Number Publication Date
CA2272064A1 true CA2272064A1 (en) 1998-05-28
CA2272064C CA2272064C (en) 2005-11-22

Family

ID=29712957

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002272064A Expired - Lifetime CA2272064C (en) 1996-11-20 1997-11-20 Method of processing a video stream

Country Status (1)

Country Link
CA (1) CA2272064C (en)

Also Published As

Publication number Publication date
CA2272064C (en) 2005-11-22

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Effective date: 20171120