Method and device for displaying or searching for object in image and computer-readable storage medium
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorMiroslaw Z. Bober
Life of this patent
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Abstract
A method of representing an object appearing in a still or video image, by processing signals corresponding to the image, comprises deriving a plurality of numerical values associated with features appearing on the outline of an object starting from an arbitrary point on the outline and applying a predetermined ordering to said values to arrive at a representation of the outline.
Claims18
A method of representing an object appearing in an image or a sequence of images, by processing signals corresponding to the image, the method comprising:
- deriving a plurality of peak coordinate values of a curvature scale space (CSS) representation of the object by smoothing an outline of the object in a plurality of stages starting from an arbitrary point on the outline, and
- ordering the peak co-ordinate values of the CSS representation on the basis of peak height values of the plurality of peak co-ordinates, the peak height values corresponding to a parameter used for smoothing the outline.
A method for representing an object appearing in an image, comprising:
- identifying at least one object outline;
- determining a curvature scale space representation for said outline, by smoothing the outline in a plurality of stages, to generate peak coordinates for the curvature scale space representation;
- and
- ordering said peak coordinates based on peak height value, corresponding to a parameter used for smoothing the outline, to generate a shape descriptor for said outline.
A method for representing an object appearing in an image, comprising:
- identifying at least one object outline;
- determining a curvature scale space representation for said outline, by smoothing the outline in a plurality of stages, to generate peak coordinates for the curvature scale space representation;
- and
- ordering said peak coordinates, by selecting highest peak value and associated highest peak coordinates and ordering remaining peak coordinates in decreasing peak height, to generate a shape descriptor for said outline wherein said highest peak value and other peak values corresponding to a parameter used for smoothing the outline.
A method for representing an object appearing in an image, comprising:
- identifying at least one object outline;
- determining a curvature scale space representation for said outline, by smoothing the outline in a plurality of stages, to generate peak coordinates for the curvature scale space representation;
- and
- ordering said peak coordinates, by selecting highest peak value and associated peak coordinates and ordering remaining peak coordinates in relation to x-coordinate values by shifting x-coordinates of the remaining peak coordinates in relation to x-coordinate associated with said highest peak value, to generate a shape descriptor for said outline wherein said highest peak value and other peak values corresponding to a parameter used for smoothing the outline.
A method for representing an object appearing in an image, comprising:
- identifying at least one object outline;
- determining a curvature scale space representation, by smoothing the outline in a plurality of stages, for said outline to generate a plurality of curves representative of said outline;
- determining peaks and associated peak coordinates for said plurality of curves;
- and
- ordering said peak coordinates, by selecting highest peak value and associated peak coordinates and shifting the x-coordinate associated with said highest peak value to a value of zero, and ordering remaining peak coordinates in relation to x-coordinate values by shifting x-coordinates of the remaining peak coordinates in relation to said shifted x-coordinate associated with said highest peak value, to generate a shape descriptor for said outline wherein said highest peak value and other peak values corresponding to a parameter used for smoothing the outline.
A method for representing an object appearing in an image, comprising:
- identifying at least one object outline;
- determining a curvature scale space representation, by smoothing the outline in a plurality of stages, for said outline to generate peak coordinates for the outline curvature scale space representation, wherein said peak coordinates are determined using a plural stage filter that produces derivative curves representative of said outline by convolving said object outline;
- and
- ordering said peak coordinates, by selecting highest peak value and associated highest peak coordinates and ordering remaining peak coordinates in decreasing peak height, to generate a shape descriptor for said outline wherein said highest peak value and other peak values corresponding to a parameter used for smoothing the outline.
Dependencies are inferred from the claim text.