I am not getting proper output for the following skin detection program.Where am I wrong??

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Dhivakar Babu 2014-9-7

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/153864-i-am-not-getting-proper-output-for-the-following-skin-detection-program-where-am-i-wrong

评论： Dhivakar Babu 2014-9-9

采纳的回答： Image Analyst

在 MATLAB Online 中打开

I am doing Face detction using skin color segmentation.

For this image,No output is shown for figure 4 and figure 5

For this Image,the same type of error occurs.

For this totally different output is showing

This is the program I used.

clc;
clear all;
currentimg=imread('Bush.jpg'); %capture the image of interest
figure(1)
subplot(421);
imshow(currentimg);
%Read the image, and capture the dimensions
VidImage = currentimg;
height = size(VidImage,1);
width = size(VidImage,2);
%Initialize the output images
out = VidImage;
bin = zeros(height,width);
%Convert the image from RGB to YCbCr
img_ycbcr = rgb2ycbcr(VidImage);
Cb = img_ycbcr(:,:,2);
Cr = img_ycbcr(:,:,3);
subplot(422);
imshow(img_ycbcr);
%Detect Skin
[r,c,v] = find(Cb>=77 & Cb<=127 & Cr>=133 & Cr<=173);
numind = size(r,1);
%Mark Skin Pixels
for i=1:numind
    out(r(i),c(i),:) = [0 0 255];
    bin(r(i),c(i)) = 1;
end
binaryImage=im2bw(bin,graythresh(bin));
binaryImage=~binaryImage;
subplot(423);
imshow(binaryImage);
B = bwboundaries(binaryImage);
disp(B);
binaryImage = imfill(binaryImage,'holes');
subplot(424);
imshow(binaryImage);
% Remove tiny regions.
binaryImage = bwareaopen(binaryImage, 5000);
subplot(425);
imshow(binaryImage);
%---------------------------------------------------------------------------
% Extract the largest area using ImageAnalyst's custom function 
ExtractNLargestBlobs().
biggestBlob = ExtractNLargestBlobs(binaryImage, 1);
% Display the image.
subplot(426)
imshow(biggestBlob, []);
title('Final Image');
%--------------------------------------------------------------------------
[labeledImage, numberOfBlobs] = bwlabel(biggestBlob, 8);
% Get all the blob properties.
blobMeasurements = regionprops(labeledImage, 'BoundingBox','Area');
allBlobAreas = [blobMeasurements.Area];
% Display the original gray scale image.
subplot(427);
imshow(currentimg, []);
% Loop through all blobs, putting up Bounding Box.
hold on; % Prevent boxes from blowing away the image and prior boxes.
for k = 1 : numberOfBlobs
      boundingBox = blobMeasurements(k).BoundingBox;   % Get box.
      x1 = boundingBox(1);
      y1 = boundingBox(2);
      x2 = x1 + boundingBox(3) - 1;
      y2 = y1 + boundingBox(4) - 1;
      verticesX = [x1 x2 x2 x1 x1];
      verticesY = [y1 y1 y2 y2 y1];
      plot(verticesX, verticesY);
end

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Image Analyst 2014-9-7

编辑：Image Analyst 2014-9-7

http://www.mathworks.com/matlabcentral/answers/13205-tutorial-how-to-format-your-question-with-markup. I see that after your edit, you still couldn't figure out how to format, so I did it for you (this time).

Dhivakar Babu 2014-9-7

Thanks a lot sir!!

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采纳的回答

Image Analyst 2014-9-7

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/153864-i-am-not-getting-proper-output-for-the-following-skin-detection-program-where-am-i-wrong#answer_150975

It looks like it should work. We can't know because you didn't explain why the output doesn't look "proper" nor did you attach the image so we could try it, nor did you even attach screenshots. Read this: http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer