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ICAPR
2005
Springer
14 years 3 months ago
A Novel Approach for Text Detection in Images Using Structural Features
We propose a novel approach for finding text in images by using ridges at several scales. A text string is modelled by a ridge at a coarse scale representing its center line and n...
H. Tran, Augustin Lux, H. L. Nguyen T, A. Boucher
ICASSP
2011
IEEE
13 years 1 months ago
A robust feature extraction algorithm based on class-Modular Image Principal Component Analysis for face verification
Face verification systems reach good performance on ideal environmental conditions. Conversely, they are very sensitive to non-controlled environments. This work proposes the cla...
Jose Francisco Pereira, Rafael M. Barreto, George ...
ECCV
2002
Springer
15 years 22 hour ago
Image Features Based on a New Approach to 2D Rotation Invariant Quadrature Filters
Abstract. Quadrature filters are a well known method of low-level computer vision for estimating certain properties of the signal, as there are local amplitude and local phase. How...
Michael Felsberg, Gerald Sommer
AIPR
2008
IEEE
13 years 10 months ago
A spatial feature enhanced MMI algorithm for multi-modal wild-fire image registration
The integration of multi-spectral airborne imagery and geographic data for wildfire and emergency response requires 3D multiple view registration. Registration of maps, visible ima...
Xiaofeng Fan, Harvey E. Rhody
IJCNN
2008
IEEE
14 years 4 months ago
On the learning of nonlinear visual features from natural images by optimizing response energies
— The operation of V1 simple cells in primates has been traditionally modelled with linear models resembling Gabor filters, whereas the functionality of subsequent visual cortic...
Jussi T. Lindgren, Aapo Hyvärinen