Object recognition with a wavelet‐transform‐based joint transform correlator

1996 ◽  
Vol 35 (3) ◽  
pp. 775 ◽  
Author(s):  
Jun Li
Keyword(s):  
Wavelet Transform ◽  
Object Recognition ◽  
Joint Transform Correlator

EXTRACTION AND MATCHING OF SYMBOLIC CONTOUR GRAPHS

2003 ◽  
Vol 17 (07) ◽  
pp. 1279-1302 ◽  
Author(s):  
TINO LOURENS ◽  
ROLF P. WÜRTZ
Keyword(s):  
Wavelet Transform ◽  
Object Recognition ◽  
Experimental Evidence ◽  
Recognition System ◽  
Gabor Wavelet ◽  
Model Matching ◽  
Gabor Wavelet Transform ◽  
Line Following

We describe an object recognition system based on symbolic contour graphs. The image to be analyzed is transformed into a graph with object corners as vertices and connecting contours as edges. Image corners are determined using a robust multiscale corner detector. Edges are constructed by line-following between corners based on evidence from the multiscale Gabor wavelet transform. Model matching is done by finding subgraph isomorphisms in the image graph. The complexity of the algorithm is reduced by labeling vertices and edges, whereby the choice of labels also makes the recognition system invariant under translation, rotation and scaling. We provide experimental evidence and theoretical arguments that the matching complexity is below O(#V3), and show that the system is competitive with other graph-based matching systems.

Affine invariants for object recognition using the wavelet transform

2002 ◽  
Vol 23 (1-3) ◽  
pp. 57-72 ◽  
Author(s):  
Mahmoud I. Khalil ◽  
Mohamed M. Bayoumi
Keyword(s):  
Wavelet Transform ◽  
Object Recognition ◽  
Affine Invariants
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