Effacer les filtres
Effacer les filtres

features extraction for images with different features size in a matrix error?

2 vues (au cours des 30 derniers jours)
I am trying to extract features from a dataset of images the problem that the features extraction algorithm gives different features size for each image, for example, the first image 1000 features and the second 2000. and it gives me an error because of that when I try to store them in a matrix. what should I do??
imds=imageDatastore('E:\dataset test','IncludeSubFolders',true,'LabelSource','foldernames');
trainingFeatures=[];
[imds_5k, imds_extra] = splitEachLabel(imds,15);
trainingLabels=imds_5k.Labels;
for i = 1:numel(imds_5k.Files) % Read images using a for loop
img = readimage(imds_5k,i);
trainingFeatures(i,:) = example(img);
end
this is the error: Unable to perform assignment because the size of the left side is 1-by-86386 and the size of the right side is 1-by-73638.

Réponse acceptée

Ameer Hamza
Ameer Hamza le 30 Nov 2020
You can use a cell array
imds=imageDatastore('E:\dataset test','IncludeSubFolders',true,'LabelSource','foldernames');
[imds_5k, imds_extra] = splitEachLabel(imds,15);
trainingLabels=imds_5k.Labels;
trainingFeatures=cell(1,numel(imds_5k.Files));
for i = 1:numel(imds_5k.Files) % Read images using a for loop
img = readimage(imds_5k,i);
trainingFeatures{i} = example(img);
end
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