我想通过使用convhull()函数来获得手掌的凸包。我正在制作一个只有手掌的图像。首先我将它转换为二进制图像,然后我应用了convhull函数。但它没有给我想要的结果。请在我的代码中找到该错误。这里是我的代码:Convhull()没有给出想要的结果。
thresh1 = 0;
thresh2 = 20;
image = imread('C:\Users\...\1_depth.png');
subplot(3,3,1)
imshow(image)
image_bin1 = (image < thresh2);
image_bin2 = (thresh1 < image);
image_bin = abs(image_bin2- image_bin1);
image_bin_filt = medfilt2(image_bin, [18,18]);
subplot(3,3,2)
imshow(imcomplement(image_bin_filt));
BW = im2bw(image_bin_filt, 0.5);
BW = imcomplement(BW);
subplot(3,3,3)
imshow(BW)
title('Binary Image of Hand');
BW2 = bwareaopen(BW, 1000);
subplot(3,3,4)
imshow(BW2)
[y,x] = find(BW2);
k = convhull(x,y);
subplot(3,3,5)
imshow(BW2,'InitialMagnification', 'fit')
hold on;
plot(x,y, 'b.')
plot(x(k), y(k), 'r', 'LineWidth', 2)
title('Objects Convex Hull');
% Find centroid.
labeledImage = bwlabel(BW2);
measurements = regionprops(labeledImage, 'Centroid', 'BoundingBox');
%xCentroid = measurements.Centroid(1);
% yCentroid = measurements.Centroid(2);
centroids = cat(1, measurements.Centroid);
subplot(3, 3, 6);
imshow(BW2);
title('Binary Image with Centroid Marked', 'FontSize', 12);
hold on;
plot(centroids(:,1),centroids(:,2), 'b*')
% Crop the image and display it in a new figure.
boundingBox = measurements.BoundingBox;
croppedImage = imcrop(BW2, boundingBox);
% Get rid of tool bar and pulldown menus that are along top of figure.
%set(gcf, 'Toolbar', 'none', 'Menu', 'none');
subplot(3,3,7)
imshow(croppedImage, []);
title('Cropped Image', 'FontSize', 12, 'Interpreter', 'None');
% Again trying to plot the convex hull
CH_objects = bwconvhull(BW);
subplot(3,3,8)
imshow(CH_objects);
title('Objects Convex Hull');
[r,c]=find(CH_objects);
CH=convhull(r,c);
subplot(3,3,9)
imshow(CH_objects)
hold on;
plot(r(CH),c(CH),'*-');
下面是我收到的代码的结果:https://ibb.co/gLZ555 但它不是理想的结果。凸包不适合,它应该只包括手掌,而不是自由空间。另外,我得到两个质心而不是一个。为什么是这样? 我使用的输入图像是:https://ibb.co/hk28Q5
我想计算只包含手掌的手掌的凸包,然后想要计算手掌的质心。这将有助于检测手掌形状。
请回答所需输出的解决方案。
谢谢!有效。 :) – Prachi