how i can crop faces from image and save them in sub images ? any body can help me please.....

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moniba qureshi 2013-5-1

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https://ww2.mathworks.cn/matlabcentral/answers/74193-how-i-can-crop-faces-from-image-and-save-them-in-sub-images-any-body-can-help-me-please

%% Step1: Equalization clear all; clc; rgbInputImage = imread('image2.jpg'); % rgbInputImage=getsnapshot(rgbInputImage); labInputImage = applycform(rgbInputImage,makecform('srgb2lab')); Lbpdfhe = fcnBPDFHE(labInputImage(:,:,1)); labOutputImage = cat(3,Lbpdfhe,labInputImage(:,:,2),labInputImage(:,:,3)); rgbOutputImage = applycform(labOutputImage,makecform('lab2srgb')); figure, imshow(rgbInputImage); %image1 figure, imshow(rgbOutputImage); %image2 img = rgbOutputImage; final_image = zeros(size(img,1), size(img,2));

%% Step2: Skin Detection if(size(img, 3) > 1) for i = 1:size(img,1) for j = 1:size(img,2) R = img(i,j,1); G = img(i,j,2); B = img(i,j,3); if(R > 92 && G > 40 && B > 20) v = [R,G,B]; if((max(v) - min(v)) > 15) if(abs(R-G) > 15 && R > G && R > B) %it is a skin final_image(i,j) = 1; end end end end end end figure, imshow(final_image); %image3

%% Step3: Grayscale To Binary. binaryImage=im2bw(final_image,0.6); figure, imshow(binaryImage); %image4

% Filling The Holes. binaryImage = imfill(binaryImage, 'holes'); figure, imshow(binaryImage); %image5

%% Step 4 binaryImage = bwareaopen(binaryImage,1890); figure,imshow(binaryImage); %image6 se = strel('disk', 100, 8); %se = strel('arbitrary', NHOOD); %se = strel('ball',1,1); binaryImage1 = imdilate(binaryImage,se); %imshow(bw), title('Original') figure, imshow(binaryImage1), title('Dilated'); %binaryImage=imdilate(binaryImage,se); %figure,imshow(binaryImage); %image7

labeledImage = bwlabel(binaryImage, 8); blobMeasurements = regionprops(labeledImage, final_image, 'all'); numberOfPeople = size(blobMeasurements, 1); imagesc(rgbInputImage); title('Outlines, from bwboundaries()'); %axis square;

hold on;

%imagesc(rgbInputImage); title('Original with bounding boxes'); fprintf(1,'Blob # x1 x2 y1 y2\n'); for k = 1 : numberOfPeople % Loop through all blobs. % Find the mean of each blob. (R2008a has a better way where you can pass the original image % directly into regionprops. The way below works for all versionsincluding earlier versions.) thisBlobsBox = blobMeasurements(k).BoundingBox; % Get list of pixels in current blob. x1 = thisBlobsBox(1); y1 = thisBlobsBox(2); x2 = x1 + thisBlobsBox(3); y2 = y1 + thisBlobsBox(4);

    % fprintf(1,'#%d %.1f %.1f %.1f %.1f\n', k, x1, x2, y1, y2);
    x = [x1 x2 x2 x1 x1];
    y = [y1 y1 y2 y2 y1];
    %subplot(3,4,2);
    plot(x, y, 'LineWidth',2 ,'color', 'green');
    figure, imshow(imcrop(final_image,[x1,y1,x2,y2]));
end

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Answer 1

Image Analyst 2013-5-1

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/74193-how-i-can-crop-faces-from-image-and-save-them-in-sub-images-any-body-can-help-me-please#answer_84047

在 MATLAB Online 中打开

Looks like you know about imcrop(). So all you have to do is to save that cropped image and call imwrite, so instead of

imshow(imcrop(final_image,[x1,y1,x2,y2]));

You do this:

croppedImage = imcrop(final_image,[x1,y1,x2,y2]));
imwrite(fullFileName, croppedImage);

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moniba qureshi 2013-5-1

im not clear about fullFileName...... ?

Image Analyst 2013-5-1

在 MATLAB Online 中打开

It's the full file name of the file on disk where you want to store it. That's the folder plus basefilename plus extension. Let's say that you wanted the file to be called "output image.png" and wanted it to be in folder c:\users\moniba\documents\images, you'd do

baseFileName = 'output image.png';
folder = 'c:\users\moniba\documents\images';
fullFileName = fullfile(folder, baseFileName);
imwrite(fullFileName, croppedImage);

Or of course you could just hard code it in:

imwrite('c:\users\moniba\documents\images\output image.png', croppedImage);

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