Saving data in an array in .mat file

Question

Nermeen alami 2013-2-24

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/64727-saving-data-in-an-array-in-mat-file

hi I'm working on image classification project using hue, saturation and value histograms. i get the histograms and i can save it into .mat file but i want to retrieve data to send it to nearest neighbor classifier. i can save the hue, saturation and value histograms of six bins as six values for each histogram (for each image). How can i save the 18 values(6 for hue, 6 for saturation , 6 for value) in one raw for each image (i.e for 15 images i want to have (15 * 19) denominational array in a file, the 19th column is for label). but i have no idea how to do that and if is that doable ?..... this is the code i used

%constants
savefile='hists.mat';
numberofbins=6; 
status=1; %means plant leave is not infected
rgbImage = imread('c:/seg.jpg');
% Display the original image.
% Convert to HSV color space
hsv = rgb2hsv(rgbImage); 
hsv=im2double(hsv);
% Extract out the individual channels.
h = hsv(:,:,1); 
s = hsv(:,:,2); 
v = hsv(:,:,3); 
% Take histograms
hhist=hist(h(:), numberofbins);
shist=hist(s(:), numberofbins);
vhist=hist(v(:), numberofbins);
save(savefile, 'hhist','shist','vhist','status');
% the result of the previous code as following
b=open('hists.mat')
b = 
    status: 1
     hhist: [264762 146522 3420 483 5137 292]
     shist: [233127 3829 47680 120489 4495 10996]
     vhist: [102904 4912 85358 84347 2252 140843]