matlab 形态学 图像分割 求复杂形状植物叶片面积
时间: 2023-11-03 19:03:01 浏览: 38
1. 读取图像并将其转换为二值图像。
```matlab
I = imread('plant.jpg');
gray = rgb2gray(I);
bw = imbinarize(gray, 'adaptive','Sensitivity',0.5);
```
2. 对二值图像进行形态学操作,如腐蚀、膨胀等,以消除噪声并强化目标形状。
```matlab
se = strel('disk',3);
bw_erode = imerode(bw,se);
bw_dilate = imdilate(bw_erode,se);
```
3. 对处理后的图像进行连通区域分析,以获取植物叶片的区域。
```matlab
cc = bwconncomp(bw_dilate);
numPixels = cellfun(@numel,cc.PixelIdxList);
[biggest,idx] = max(numPixels);
leaf = false(size(bw_dilate));
leaf(cc.PixelIdxList{idx}) = true;
```
4. 计算叶片面积。
```matlab
area = bwarea(leaf);
```
完整代码:
```matlab
I = imread('plant.jpg');
gray = rgb2gray(I);
bw = imbinarize(gray, 'adaptive','Sensitivity',0.5);
se = strel('disk',3);
bw_erode = imerode(bw,se);
bw_dilate = imdilate(bw_erode,se);
cc = bwconncomp(bw_dilate);
numPixels = cellfun(@numel,cc.PixelIdxList);
[biggest,idx] = max(numPixels);
leaf = false(size(bw_dilate));
leaf(cc.PixelIdxList{idx}) = true;
area = bwarea(leaf);
fprintf('叶片面积为:%d\n',area);
```
注意:这里假设该植物只有一个叶片,如果有多个叶片,需要对每个叶片都进行以上步骤。