Patent EP0358267A2 successfully refreshed from Google Patents.
EP0358267A2
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EP
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Picture motion measurement
Assignee: Philips Electronics UK Ltd
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Filing: 1989-09-01
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Granted: —
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Expires: 2009-09-01
Abstract
Abstract Television pictures are dividied up into a number of regions and corresponding regions for two pictures are correlated to produce motion vectors at an output connection (2) of a motion vector generator (1) which also at an output connection (4) produces signals signifying relative magnitude and/or width of the vectors which control the weighting operation of a weighting circuit (3). The weighted vectors are applied to a two-dimensional summing arrangement (5) where corresponding vectors from the various regions are summed in individual stores. A largest vector selector (6) selects the most dominant of the motion vectors depending upon the quantities stored in the summing selector (6).
Inventors
- 👤 Gerard Marius Xavier Fernando
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 23:06
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/01; H04N7/0135; H04N7/014; G; G06; G06T; G06T7/00; G06T7/20; G06T7/223; G06T7/231; H04N19/00; H04N19/50; H04N19/503; H04N19/51; H04N19/523; H04N19/527; H04N5/00; H04N5/14; H04N5/144; H04N5/145
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
133 words
A method of picture motion measurement comprising subdividing pictures into two or more regions and correlating corresponding regions of two pictures to determine correlation as a function of displacement thereby to determine from peak correlation values for each region a plurality of motion vectors, said method being characterised by the further steps of:- i) weighting motion vectors from regions of said sub-divided picture in dependence upon a given relative quantity of peaks in said correlation functions, ii) individually summing those weighted motion vectors having corresponding coordinates from said regions of said sub-divided picture to produce a plurality of summed quantities each quantity relating to particular motion vector coordinates, and iii) selecting the coordinates of a given number of the largest of said summed quantities to form the most dominant of said motion vectors.
Claim 2
Independent Claim
133 words
A method of picture motion measurement comprising subdividing pictures into two or more regions and correlating corresponding regions of two pictures to determine correlation as a function of displacement thereby to determine from peak correlation values for each region a plurality of motion vectors, said method being characterised by the further steps of:- i) weighting motion vectors from regions of said sub-divided picture in dependence upon a given relative quantity of peaks in said correlation functions, ii) individually summing those weighted motion vectors having corresponding coordinates from said regions of said sub-divided picture to produce a plurality of summed quantities each quantity relating to particular motion vector coordinates, and iii) selecting the coordinates of a given number of the largest of said summed quantities to form the most dominant of said motion vectors.
Claim 3
Dependent Claim
27 words
A method as claimed in Claim 1, characterised in that the weighting of said motion vectors depends upon the relative magnitudes of peaks in the correlation functions.
Claim 4
Dependent Claim
29 words
A method has claimed in Claim 1 or 2, characterised in that the weighting of said motion vectors depends upon the relative widths of peaks in the correlation functions.
Claim 5
Dependent Claim
30 words
A method as claimed in Claim 1, 2 or 3, characterised in that said given number of dominant motion vectors is directly proportional to the interval between said two pictures.
Claim 6
Dependent Claim
38 words
A method as claimed in Claim 1, 2 or 3 for use in a television system, characterised in that said given number of dominant motion vectors is directly proportinal to the number of frames between said two pictures.
Claim 7
Independent Claim
66 words
A method as claimed in any of the preceding claims, characterised in that in the case that at least said given number of said summed quantities are of a correspondingly large magnitude a complexity signal is produced in addition to or instead of selecting coordinates to form the most dominant motion vectors, said complexity signal indicating that said pictures contain a large degree of motion complexity.
Claim 8
Dependent Claim
14 words
Apparatus for use with the method as claimed in any of the preceding claims.
Claim 9
Dependent Claim
125 words
Apparatus for picture motion measurement comprising means for correlating coresponding regions of two pictures to determine correlation as a function of displacement to determine from peak correlation values for each region a plurality of motion vectors, characterised in that said apparatus additionally comprises means for weighting motion vectors from regions of said sub-divided picture in dependence upon agiven relative quantity of peaks in said correlation functions, means for individually summing those weighted motion vectors having corresponding coordinates from said regions of said sub-divided picture to produce a plurality of summed quantities each quantity relating to particular motion vector coordinates and means for selecting the coordinates of a given number of the largest of said summed quantities to form the most dominant of said motion vectors.
Claim 10
Dependent Claim
125 words
Apparatus for picture motion measurement comprising means for correlating coresponding regions of two pictures to determine correlation as a function of displacement to determine from peak correlation values for each region a plurality of motion vectors, characterised in that said apparatus additionally comprises means for weighting motion vectors from regions of said sub-divided picture in dependence upon agiven relative quantity of peaks in said correlation functions, means for individually summing those weighted motion vectors having corresponding coordinates from said regions of said sub-divided picture to produce a plurality of summed quantities each quantity relating to particular motion vector coordinates and means for selecting the coordinates of a given number of the largest of said summed quantities to form the most dominant of said motion vectors.
Claim 11
Dependent Claim
34 words
Apparatus as claimed in Claim 8, characterised in that said means for weighting said motion vectors comprises means for weighting said motion vectors depending upon the relative magnitudes of peaks in the correlation functions.
Claim 12
Dependent Claim
37 words
Apparatus as claimed in Claim 8 or 9, characterised in that said means for weighting said motion vectors comprises means for weighting said motion vectors depending upon the relative widths of the peaks in the correlation functions.
Claim 13
Dependent Claim
53 words
Apparatus as claimed in Claim 8, 9 or 10, characterised in that in the case where said given number of said summed quantities are of a correspondingly large magnitude means are provided for producing a complexity signal which signal may be produced in addition to or instead of the most dominant motion vectors.
References Cited (Backward Citations)
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