quadrature_filter.m

局部滤波器的特征提取方法

function [quadrature_image_matrix] = quadrature_filter(original_image_matrix, horizon_filter, vertical_filter);
% written by xiaoxun zhang
% 2004-08-21

horizon_filter = fliplr(horizon_filter);
quadrature_image_matrix = conv2(original_image_matrix, horizon_filter, 'same');

vertical_filter = flipud(vertical_filter);
quadrature_image_matrix = conv2(quadrature_image_matrix, vertical_filter, 'same');