open mnist base in matlab in matlab

main.m
function [images, labels] = readMNIST(filenameImages, filenameLabels)

% Open files
fidImages = fopen(filenameImages, 'r', 'b');
fidLabels = fopen(filenameLabels, 'r', 'b');

% Read headers
magicNumberImages = fread(fidImages, 1, 'int32', 0, 'b');
numImages = fread(fidImages, 1, 'int32', 0, 'b');
numRows = fread(fidImages, 1, 'int32', 0, 'b');
numCols = fread(fidImages, 1, 'int32', 0, 'b');

magicNumberLabels = fread(fidLabels, 1, 'int32', 0, 'b');
numLabels = fread(fidLabels, 1, 'int32', 0, 'b');

% Read images and labels
images = fread(fidImages, inf, 'unsigned char');
images = reshape(images, numCols, numRows, numImages);
images = permute(images,[2 1 3]);

labels = fread(fidLabels, inf, 'unsigned char');

% Close files
fclose(fidImages);
fclose(fidLabels);
end
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main.m
[images, labels] = readMNIST('train-images.idx3-ubyte', 'train-labels.idx1-ubyte');
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