Converting JPG images into a cell arrays
I have the following code i want to convert images jpg (TrainingData) into cell arrays ,where each cell containing a 28-by-28 matrix representing a synthetic image of fingerprint dataDir= fullfile('Data/'); exts = {'.jpg','.png','.tif','BMP'}; imds = imageDatastore(fullfile(dataDir),... 'IncludeSubfolders',true,'FileExtensions','.jpg','LabelSource','foldernames'); countEachLabel(imds); [TrainData, TestData] = splitEachLabel(imds, 0.5); size(TrainData); countEachLabel(TrainData); for i = 1:numImages img = readimage(TrainData, i); img = imbinarize(img); end
John Michell answered .
2025-11-20
sz = size(img);
RB = 28; CB = 28;
NRB = floor(sz(1)/RB);
LOR = sz(1) - NRB*RB;
NCB = floor(sz(2)/CB);
LOC = sz(2) - NCB*CB;
if LOR ~= 0
rbs = [RB * ones(1,NRB), LOR];
else
rbs = RB * ones(1,NRC);
end
if LOC ~= 0
cbs = [CB * ones(1,NCB), LOC];
else
cbs = CB * ones(1,NCB);
end
tiles = mat2cell(img, rbs, cbs, size(img,3));