Image analyzer for processing multiple frames of image data
First Claim
1. A method of analyzing multiple image frames, each frame being represented by a matrix of pixels fed serially from a source for processing, said method comprising:
- transforming a first frame of pixels in at least one serial neighborhood transformation stage to detect spatial locations associated with a given object therein;
retaining indicia of the transformation of the first frame associated with the spatial locations of said object;
subsequently transforming a second frame of pixels in at least one serial neighborhood transformation stage to detect spatial locations associated with said object therein; and
analyzing the difference between the transformation of the first and second frames to thereby detect changes of said object between frames.
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Abstract
A method of analyzing multiple frames of image data wherein each frame is represented by a matrix of pixels fed serially from a source for processing. A first frame of pixels is transformed in at least one serial neighborhood transformation stage to detect spatial locations associated with given objects in the frame. A second frame of pixels is subsequently transformed to detect the spatial locations associated with the objects in that frame. Then, the differences between the transformations of the first and second frames are analyzed to detect changes in the number of and/or location of the objects between frames.
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Citations
7 Claims
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1. A method of analyzing multiple image frames, each frame being represented by a matrix of pixels fed serially from a source for processing, said method comprising:
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transforming a first frame of pixels in at least one serial neighborhood transformation stage to detect spatial locations associated with a given object therein; retaining indicia of the transformation of the first frame associated with the spatial locations of said object; subsequently transforming a second frame of pixels in at least one serial neighborhood transformation stage to detect spatial locations associated with said object therein; and analyzing the difference between the transformation of the first and second frames to thereby detect changes of said object between frames. - View Dependent Claims (2, 3)
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4. A method of automatically detecting changes in particular objects between multiple frames of a scene, said method comprising:
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scanning the scene to provide a first frame of serial pixel data; subsequently scanning the scene to provide a second frame of serial pixel data; using at least one serial neighborhood transformation stage to detect the spatial locations of a particular object in the scene by transforming the pixels in the first frame; combining data associated with said transformed pixels with corresponding pixels in the second frame; transforming the pixels in the second frame in at least one serial neighborhood transformation stage to detect the spatial locations of said object therein while passing the previously transformed data unmodified through the stage; and comparing the differences between the transformations of the first and second frames to detect for changes of the object therebetween. - View Dependent Claims (5)
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6. A method of automatically detecting changes in particular objects between plural image frames taken of a generally common scene, each frame being represented by a matrix of pixels, said method comprising:
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using neighborhood transformations to transform the matrix of a first frame to detect spatial locations within the matrix associated with a given object; using neighborhood transformations to transform the matrix of a second frame to detect spatial locations within that matrix associated with said given object; and analyzing the transformations of the first and second frames to thereby detect changes of said object between frames. - View Dependent Claims (7)
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Specification