Title :
Optimally isotropic Laplacian operator
Author :
Kamgar-Parsi, B. ; Rosenfeld, Avi
Author_Institution :
Inf. Technol. Div., Naval Res. Lab., Washington, DC
fDate :
10/1/1999 12:00:00 AM
Abstract :
Laplacian operators used in the literature for digital image processing are not rotationally invariant. We examine the anisotropy of 3×3 Laplacian operators for images quantized in square pixels, and find the operator which has the minimum overall anisotropy
Keywords :
Laplace equations; approximation theory; image processing; mathematical operators; optimisation; quantisation (signal); Laplacian approximation; anisotropy; digital image processing; image quantization; optimally isotropic Laplacian operator; square pixels; Anisotropic magnetoresistance; Digital images; Image processing; Image sampling; Information technology; Laboratories; Laplace equations; Pixel; Process design; Two dimensional displays;
Journal_Title :
Image Processing, IEEE Transactions on
