Efficient algorithm for computation of the second-order moment of the subpixel-edge position.
Subpixel-edge detection is the first stage in processing many high-level vision algorithms. However, the study of the statistical properties of such data has remained incomplete in most research. We present a method for estimating the second-order moments of the subpixel-edge position, computed by a deterministic algorithm based on three quadratic interpolations. The algorithm is tested on different types of noise (Gaussian, impulse, colored) and compared with two methods in the literature. The results show that this approach remains accurate even at high noise levels.
Bouchara
Frédéric
F
Système Information Signal/Automatique et Image, Université du Sud Toulon--Var, BP 20132, 83957 La Garde Cedex, France. bouchara@univ-tln.fr
D000465:Algorithms; D003196:Computer Graphics; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D015233:Models, Statistical; D010363:Pattern Recognition, Automated; D012815:Signal Processing, Computer-Assisted