原始slic算法的matlab代码示例
时间: 2023-05-29 17:01:58 浏览: 216
以下是基本的 MATLAB 代码编写示例,用于实现原始的 SLIC 算法:
```Matlab
% 加载图像
img = imread('image.jpg');
[m, n, ~] = size(img); % 获取图像宽和高
% 定义超像素数量
k = 300;
% 计算每个超像素大小
S = round(sqrt(m * n / k));
% 初始化聚类中心
centers = zeros(k, 5); % 5 表示颜色的 RGB 值以及坐标值
idx = 1;
for i = 1:S:m
for j = 1:S:n
x = i + round(S / 2);
y = j + round(S / 2);
c = img(x, y, :);
centers(idx, :) = [c, x, y];
idx = idx + 1;
end
end
% 迭代更新聚类中心
num_iterations = 10;
for i = 1:num_iterations
for j = 1:k
cx = centers(j, 4);
cy = centers(j, 5);
for u = max(1, cx - S):min(m, cx + S)
for v = max(1, cy - S):min(n, cy + S)
c = img(u, v, :);
d = sqrt(sum((c - centers(j, 1:3)).^2));
if d < centers(j, 4)
centers(j, :) = [c, u, v, d];
end
end
end
end
end
% 绘制超像素边界
segmented_img = zeros(m, n);
for i = 1:m
for j = 1:n
min_d = inf;
min_idx = 0;
for l = 1:k
d = sqrt(sum((img(i, j, :) - centers(l, 1:3)).^2));
if d < min_d
min_d = d;
min_idx = l;
end
end
segmented_img(i, j) = min_idx;
end
end
imshow(label2rgb(segmented_img));
```
这个示例中采用矩阵运算和 MATLAB 内置函数,相对比较简单易懂。这段代码可以在 MATLAB 中运行,并返回 SLIC 图像分割结果。
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