matlab中此段代码中实现Zernike多项式的计算函数代码是什么? 读取图像image = imreadimagejpg;image = rgb2grayimage; 使用Canny边缘检测算法获取二值化图像bw_image = edgeimage canny; 计算图像的Zernike矩order = 10; Zernike矩的阶数moments = zernike_momentsbw_i
实现Zernike多项式的计算函数代码是:
% Zernike矩计算函数
function moments = zernike_moments(image, order)
[rows, cols] = size(image);
moments = zeros(order+1, order+1);
% 计算图像的归一化矩
for p = 0:order
for q = 0:order
if mod(p+q, 2) == 0
for x = 1:rows
for y = 1:cols
if image(x, y) > 0
rho = sqrt((2*x-rows-1)^2 + (2*y-cols-1)^2) / sqrt(rows^2 + cols^2);
theta = atan2((2*y-cols-1), (2*x-rows-1));
moments(p+1, q+1) = moments(p+1, q+1) + image(x, y) * zernike_polynomial(p, q, rho, theta);
end
end
end
moments(p+1, q+1) = moments(p+1, q+1) * ((p+1)/(pi*(rows*cols)));
end
end
end
end
% Zernike多项式计算函数
function value = zernike_polynomial(p, q, rho, theta)
value = 0;
for s = 0:(p-q)/2
value = value + (-1)^s * factorial(p-s) / (factorial(s) * factorial((p+q)/2-s) * factorial((p-q)/2-s)) * rho^(p-2*s);
end
value = value * sqrt((p+1)/pi) * cos(q*theta);
end
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