启发式分割算法matlab代码编写
时间: 2023-10-12 18:10:42 浏览: 76
以下是一个简单的启发式分割算法的 MATLAB 代码示例:
```matlab
function [segmap] = heuristic_seg(im, thresh)
% HEURISTIC_SEG performs heuristic segmentation on an input image
% im: input image
% thresh: threshold value for segmenting image
% segmap: output segmentation map
% Convert input image to grayscale
im = rgb2gray(im);
% Apply Gaussian smoothing
im = imgaussfilt(im);
% Compute gradient magnitude of image
[Gmag, ~] = imgradient(im);
% Initialize segmentation map
segmap = zeros(size(im));
% Threshold gradient magnitude and set boundary pixels to 1
thresh_Gmag = thresh * max(Gmag(:));
segmap(Gmag >= thresh_Gmag) = 1;
% Perform connected component analysis on segmentation map
segmap = bwlabel(segmap, 4);
% Remove small connected components
seg_props = regionprops(segmap, 'Area');
for i = 1:length(seg_props)
if seg_props(i).Area < 100
segmap(segmap == i) = 0;
end
end
% Display segmentation map
imshow(segmap)
end
```
在此示例中,我们首先将彩色图像转换为灰度图像,然后对其进行高斯平滑处理。接下来,我们计算图像的梯度幅值,并根据给定的阈值将其阈值化。我们将阈值化后的图像进行连通组件分析,并删除小于100像素的连接组件。最后,我们输出分割映射并将其显示出来。