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how to convert 227x227 image into 227x227x3

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manoj sain
manoj sain 2021-12-3
回答： yanqi liu 2021-12-4
I am working on deep learning. try to use alexnet for training . but it takes 227x227x227 and i have 227x227.
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Walter Roberson
Walter Roberson 2021-12-3
Your title asks about 224 x 224 to 224 x 224 x 3, but your text asks for 227 x 227 to 227 x 227 x 227 ?
The methods we would use would be different for the two.

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采纳的回答

yanqi liu
yanqi liu 2021-12-4
yes，sir，may be use
% convert 227x227 image into 227x227x3
imds = imageDatastore('imagefolder','IncludeSubfolders',true,'LabelSource','foldernames');
auimds = augmentedImageDatastore(imds,'ColorPreprocessing','gray2rgb')
% or
trainingImages = imageDatastore('imagefolder',...
'IncludeSubfolders',true,...
'LabelSource','foldernames','ReadFcn',@data_preporcess);
function data = data_preporcess(file)
data = imread(file);
if ndims(data) == 2
data = cat(3, data, data, data);
end
data = double(data);
end

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Walter Roberson
Walter Roberson 2021-12-3

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