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Recognizing Objects Using Color-Annotated Adjacency Graphs
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Recognizing Objects Using Color-Annotated Adjacency Graphs
Peter Tu8, Richard Hartley8 and Tushar Saxena8, 9
| (8) |
GE - Corporate Research and Development, P.O.Box 8, Schenectady, NY, 12301 |
| (9) |
CMA Consulting Services, Schenectady, NY, 12309 |
Abstract
We introduce a new algorithm for identifying objects in clut- tered images, based on approximate subgraph matching. This algorithm
is robust under moderate variations in the camera viewpoints. In other words, it is expected to recognize an object (whose
model is derived from a template image) in a search image, even when the cameras of the template and search images are substantially
different. The algorithm represents the objects in the template and search images by weighted adjacency graphs. Then the problem
of recognizing the template object in the search image is reduced to the problem of approximately match- ing the template
graph as a subgraph of the search image graph. The matching procedure is somewhat insensitive to minor graph variations, thus
leading to a recognition algorithm which is robust with respect to camera variations.
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