Title :
Optimum Laplacian for digital image processing
Author :
Kamgar-Parsi, B. ; Kamgar-Parsi, B. ; Rosenfeld, Avi
Author_Institution :
Div. of Inf. Technol., Naval Res. Lab., Washington, DC, USA
Abstract :
Spatially quantized approximations of the Laplacian used in digital image processing are not rotationally invariant. We examine the anisotropy of 3×3 Laplacian operators for images quantized in square pixels, and derive, from optimizing criteria, the operator which has the minimum overall anisotropy
Keywords :
Laplace equations; approximation theory; image processing; mathematical operators; optimisation; quantisation (signal); anisotropy; digital image processing; optimum Laplacian operator; quantized images; spatially quantized approximations; square pixels; Anisotropic magnetoresistance; Automation; Digital images; Educational institutions; Finite difference methods; Image sampling; Laboratories; Laplace equations; Pixel;
Conference_Titel :
Image Processing, 1997. Proceedings., International Conference on
Conference_Location :
Santa Barbara, CA
Print_ISBN :
0-8186-8183-7
DOI :
10.1109/ICIP.1997.638599
