Method and apparatus for representing and searching for an object using shape
First Claim
1. A method of representing an object appearing in an image, wherein the object appears in the image with a first two-dimensional outline, by processing signals corresponding to the image, the method comprising deriving a view descriptor of the first outline of the object and deriving at least one additional view descriptor of the outline of the object in a different view, and associating the two or more view descriptors to form an object descriptor, wherein the view descriptors are derived using a curvature scale space representation.
3 Assignments
0 Petitions
Accused Products
Abstract
A method is disclosed for representing a sequence of images constituting a moving image by processing signals corresponding to the image. An object appearing in one image is identified in the sequence in a first perspective view, and the same object appearing in another image is identified in the sequence in a second perspective view. A view descriptor of the outline of the object in the first perspective view is derived and at least one additional view descriptor of the outline of the object in another perspective view is also derived. The two or more view descriptors are associated to form a descriptor which is a single indexable entity for the sequence of images.
-
Citations
14 Claims
- 1. A method of representing an object appearing in an image, wherein the object appears in the image with a first two-dimensional outline, by processing signals corresponding to the image, the method comprising deriving a view descriptor of the first outline of the object and deriving at least one additional view descriptor of the outline of the object in a different view, and associating the two or more view descriptors to form an object descriptor, wherein the view descriptors are derived using a curvature scale space representation.
-
5. A method of representing an object appearing in an image to index the respective image or sequence of images of which it is a part for searching purposes, the method comprising deriving a plurality of view descriptors corresponding to a plurality of two-dimensional outlines of the object in different views, by processing signals corresponding to the outlines, and associating the view descriptors to form an object descriptor to index the respective image or image sequence, wherein the view descriptors are derived using a curvature scale space representation.
-
6. A method of representing an object appearing in an image or sequence of images comprising deriving a descriptor which is related to the shape and/or size of the object and which is independent of the view of the object in the image or sequence of images.
Specification