Is there alternative for imread command to reduce delay in matlab program?

问题

I am having 2900 images in this path G:\newdatabase\ It is taking too much time to read images.For dot product also it is taking too much time.

Questions:

1.Is there any alternative for imread command which increases performance?

2.Is there any alternative for dot command which increases performance?

Source code i tried:

  srcFiles = dir('G:\newdatabase\*.jpg');  % the folder in which ur images exists
    for b = 1 : length(srcFiles)
        filename = strcat('G:\newdatabase\',srcFiles(b).name);
        Imgdata = imread(filename);

Source code i tried:

for i = 1:aa
    pare = dot(NormImage,u(:,i));
    p = [p; pare];
end

来源：https://stackoverflow.com/questions/24031650/is-there-alternative-for-imread-command-to-reduce-delay-in-matlab-program