how to load Image Datastore and make them of equal size

i am trying to do this but facing this error

Error using imageSet/parseDirInput (line 131)

Input, imageLocation, must be a valid folder name or a cell array of image file locations.

Error in imageSet/parseInput (line 101)

this = this.parseDirInput(varargin{:});

Error in imageSet (line 306)

this = parseInput(this, varargin{:});

Error in bowexample (line 25)

imgSets = [ imgSets, imageSet(fullfile('imgSets', classes{i})) ];

here is my code

imgSets = [];

imgFolder = fullfile(matlabroot, 'toolbox', 'vision', 'visiondata','imageSets');

imgSets = imageSet(imgFolder,'recursive');

for i = 1:length(classes)

imgSets = [ imgSets, imageSet(fullfile('imgSets', classes{i})) ];

end

thanks

Answer 1

[KALYAN ACHARJYA]

Images=dir('C:\complete_path\folder_name\*.png'); %Database Image folder
%...........................................^ note on format
outDirectory='C:\complete_path\resize_images\'; % To save resize images
%......................^ set valid path folder will create by Matlab itself 
mkdir(outDirectory);
for i=1:length(Images)
ImgName=strcat('C:\complete_path\folder_name\',Images(i).name);
grayImage=imread(ImgName);
newImage=imresize(grayImage,[512 512],'bilinear');
%..............................^ choose as per your requirements, size and method
imwrite(newImage,strcat(outDirectory,Images(i).name));
end

Any issue let me know?

Hope this helps!