Title :
Evaluation of the variance function for edge enhancement in multidimensional data
Author :
Stein, R.A. ; Boyd, J.E.
Author_Institution :
Dept. of Electr. Eng., Calgary Univ., Alta., Canada
Abstract :
A multidimensional variance function filter is defined and its performance in edge enhancement applications is evaluated. For the case of a 3*3 window, the variance filter is shown to perform comparably to the Sobel filter and better than the compass gradient filter. The advantage of the variance filter is its easy extendability to large window sizes and high dimensionality. The 3D variance filter is applied to the ventricular edge detection problem in gated nuclear cardiac imaging.<>
Keywords :
filtering and prediction theory; multidimensional digital filters; picture processing; 3D variance filter; digital filter; edge enhancement; gated nuclear cardiac imaging; image processing; medical imaging; multidimensional data; variance function; ventricular edge detection problem; Degradation; Delay; Filters; High-resolution imaging; Image edge detection; Image resolution; Multidimensional systems; Noise reduction; Object detection; Signal resolution;
Conference_Titel :
Circuits and Systems, 1988., IEEE International Symposium on
Conference_Location :
Espoo, Finland
DOI :
10.1109/ISCAS.1988.15462
