如何使用MATLAB跟踪表面区域以及平滑图像中的特定区域 [英] How to trace the surface area as well as smoothen a specific region in an image using MATLAB

问题描述

我的图像有6种颜色，每种颜色都表示一个值。我已经获得了如下所示的图像。

I have an image with 6 colors each indicating a value. I had obtained an image as shown below.

I需要使边缘平滑，然后找出该区域以及该区域的表面区域。第二个图像显示边缘绘制的黑线表示我需要以这种方式平滑边缘。

I need to smoothen the edges and then find out the area as well as the surface area of that region. The second image shows a black line drawn in the edges which indicates that I need to smoothen the edges in such a way.

我曾使用分割来创建第三张图像中显示的蒙版，然后使用图像后面的代码获取分割图像。

I had used segmentation to create a mask as shown in the third image, and then obtain a segmented image using the code following the image.

我使用以下代码生成直到蒙版图像。
来源：如何细分

I have used the following code for generating till the masked image. Source : How to segment

 imshow(Out1)  
 str = 'Click to select initial contour location. Double-click to confirm    and proceed.';
 title(str,'Color','b','FontSize',12);
 disp(sprintf('\nNote: Click close to object boundaries for more accurate   result.'));
 mask = roipoly;
 figure, imshow(mask)
 title('Initial MASK');
 maxIterations = 3000; 
 bw = activecontour(Out1, mask, maxIterations, 'Chan-Vese');

 % Display segmented image
 figure, imshow(bw)
 title('Segmented Image');

为了使用'activecontour'功能，我的图像需要是灰度图像，我无法转换为灰度和返回。另外，为了找出该区域的表面积/面积，还有任何内置功能。请帮忙谢谢。

In order to use the 'activecontour' function my image needs to be a grey-scale image, which I'm not being able to convert to greyscale and back. Also to find out surface area/ area of the region is there any inbuilt function. Please help thanks.

推荐答案

使用 im2double ， im2uint8 等将二进制图像转换为灰度。

use im2double, im2uint8, etc. to convert binary image to grayscale.

使用 bwarea 或 regionprops 查找区域区域。

use bwarea or regionprops to find the region area.

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