Robust Direction Estimation of Gradient Vector Field for Iris Recognition.
Zhenan SunYunhong WangTieniu TanJiali CuiPublished in: ICPR (2) (2004)
Keyphrases
- vector field
- iris recognition
- iris localization
- iris segmentation
- gradient field
- scalar field
- iris biometrics
- robust estimation
- iris images
- optical flow
- motion field
- personal identification
- feature extraction
- normal direction
- image acquisition
- gabor wavelets
- critical points
- image gradient
- velocity field
- localization algorithm
- displacement vectors
- recognition algorithm
- optical flow estimation
- biometric systems
- edge detection
- structure tensor
- external force
- image denoising
- feature selection