CNN training and testing (resizing training images)

Dear All,,, It's my first time to use the Convolutional Neural Net training commands. I'm using this line to resize my training images

Folder = '256_ObjectCategories'; digitData = imageDatastore(Folder,'IncludeSubfolders',true,'LabelSource','foldernames'); digitData.ReadFcn = @(loc)imresize(imread(loc),[128 128],'nearest','Colormap','original');

However, I still get this error:

Unexpected image size: All images must have the same size.

Any help please ?

[mariam aboelwafa]

I also can't completely understand this line: digitData.ReadFcn = @(loc)imresize(imread(loc),[128 128],'nearest','Colormap','original'); But I found it in MathWorks documentation

Answer 1

[sam Boadi]

use imresize. anyway is the dataset in an imageDataStore?