We choose the knot vector to generate watermarks since it does not change when the model is affine transformed
. Figure 1 shows the concrete process of our algorithm.
The registration process consists of feature extraction, feature matching, and affine transform
For example, Figure 3(a) shows an affine transformed
version of Figures 2(a) and 3(b) shows the GC derived from Figure 3(a).
Major classifications of eye detection under are: Hough Transform, Kalman Filters, Markov Chain Monte Carlo Method, Support Vector Machine (SVM), Affine Transform
, Canny Edge detector and Gradient Algorithm.
The method is robust to simple affine transform
The proposed descriptor is invariant to affine transform
, including rotation, translation and scaling.
In our new procedure, the coordinate system is transformed by an affine transform
in order to negate the effect of the velocity anisotropy.
Image j was warped to image i by an affine transform
, and the normalized cross correlation (NCC) was utilized for validating the similarity assumption:
Shape context is one of the methods utilized for the general problem of shape matching when the shapes differences are not limited to those coming from affine transforms
, , , .