Hi, I am working on computing some features of an image data set and saving the features for later use. Below is the code:
tic
l = 9907
Icolor = cell(1,l);
Iwave = cell(1,l);
IglrlFeatures = cell(1,l);
for i = 1:l
IDB{1,i} = imread(strcat(path,strcat(num2str(i),'.jpg')));
Icolor{1,i} = colorMoments(IDB{1,i});
Iwave{1,i} = waveletTransform(IDB{1,i});
IglrlFeatures{1,i} = textureFeatures(IDB{1,i});
ICW{1,i} = [Icolor{1,i} Iwave{1,i} IglrlFeatures{1,i}];
end
toc
Here the computation time for each function on single image is:
colorMoments(single_image) = Elapsed time is 0.009689 seconds.
waveletTransform(single_image) = Elapsed time is 0.018069 seconds.
textureFeatures(single_image) = Elapsed time is 0.022902 seconds.
l = data set size = 9907 images
Computational times for different data set sizes (l):
l = 10; Elapsed time is 0.402629 seconds.
l = 100; Elapsed time is 2.233971 seconds.
l = 1000; Elapsed time is 21.178395 seconds.
l = 2000; Elapsed time is 44.510071 seconds.
l = 5000; Elapsed time is 111.393866 seconds.
l = 9907; Elapsed time is 238.924998 seconds. approximately (~4 mins)
I want to decrease this computational time, any suggestions?
Thanks, Gopi
