TY - GEN
T1 - Two simple nonlinear edge detectors
AU - Wickerhauser, Mladen Victor
PY - 2004
Y1 - 2004
N2 - We specialize to some simple cases the algorithm for singularity detection in images from eigenvalues of the dual local autocovariance matrix. The eigenvalue difference, or "edginess" at a point, then reduces to a simple nonlinear function. We discuss the derivation of these functions, which provide low-complexity nonlinear edge filters with parameters for customization, and obtain formulas using the two smallest masks. We then exhibit their effects on six sample images.
AB - We specialize to some simple cases the algorithm for singularity detection in images from eigenvalues of the dual local autocovariance matrix. The eigenvalue difference, or "edginess" at a point, then reduces to a simple nonlinear function. We discuss the derivation of these functions, which provide low-complexity nonlinear edge filters with parameters for customization, and obtain formulas using the two smallest masks. We then exhibit their effects on six sample images.
UR - http://www.scopus.com/inward/record.url?scp=4344566022&partnerID=8YFLogxK
U2 - 10.1142/9789812702654_0001
DO - 10.1142/9789812702654_0001
M3 - Conference contribution
AN - SCOPUS:4344566022
SN - 981238961X
SN - 9789812389619
T3 - Proceedings of the International Computer Congress 2004 on Wavelet Analysis and its Applications, and Active Media Technology
SP - 3
EP - 12
BT - Proceedings of the International Computer Congress 2004 on Wavelet Analysis and its Applications, and Active Media Technology
PB - World Scientific Publishing Co. Pte. Ltd.
T2 - Proceedings of the International Computer Congress 2004 on Wavelet Analysis and its Applications, and Active Media Technology
Y2 - 28 May 2004 through 30 May 2004
ER -