Cell from Unint8 Conversion error

clc;
clear all;
close all;
A_folder = dir('E:\Notes\SEM 7\PRML\Alphabet Database\A\*.png');
B_folder = dir('E:\Notes\SEM 7\PRML\Alphabet Database\B\*.png');
C_folder = dir('E:\Notes\SEM 7\PRML\Alphabet Database\C\*.png');
D_folder = dir('E:\Notes\SEM 7\PRML\Alphabet Database\D\*.png');
E_folder = dir('E:\Notes\SEM 7\PRML\Alphabet Database\E\*.png');
A_result=cellmat(1,length(A_folder),32,32);
B_result=cellmat(1,length(B_folder),32,32);
C_result=cellmat(1,length(C_folder),32,32);
D_result=cellmat(1,length(D_folder),32,32);
E_result=cellmat(1,length(E_folder),32,32);
m=100;
for i=1:m
  A_result(1,i)=imread(strcat('E:\Notes\SEM 7\PRML\Alphabet Database\A\',A_folder(i).name));
  B_result(1,i)=imread(strcat('E:\Notes\SEM 7\PRML\Alphabet Database\B\',B_folder(i).name));
  C_result(1,i)=imread(strcat('E:\Notes\SEM 7\PRML\Alphabet Database\C\',C_folder(i).name));
  D_result(1,i)=imread(strcat('E:\Notes\SEM 7\PRML\Alphabet Database\D\',D_folder(i).name));
  E_result(1,i)=imread(strcat('E:\Notes\SEM 7\PRML\Alphabet Database\E\',E_folder(i).name));
end

My database contains 100 greyscale images. I need to convert them into matrices with each cell containing a matrice of uint8 form of each image.

Answer 1

[Srivardhan Gadila]

Refer to Access Data in Cell Array.

In the above code, index the Cell Array with with Curly Braces, {} & not Smooth Parentheses, () in the for loop ie., change the code in the for loop to:

for i=1:m
  A_result{1,i}=imread(strcat('E:\Notes\SEM 7\PRML\Alphabet Database\A\',A_folder(i).name));
  B_result{1,i}=imread(strcat('E:\Notes\SEM 7\PRML\Alphabet Database\B\',B_folder(i).name));
  C_result{1,i}=imread(strcat('E:\Notes\SEM 7\PRML\Alphabet Database\C\',C_folder(i).name));
  D_result{1,i}=imread(strcat('E:\Notes\SEM 7\PRML\Alphabet Database\D\',D_folder(i).name));
  E_result{1,i}=imread(strcat('E:\Notes\SEM 7\PRML\Alphabet Database\E\',E_folder(i).name));
end

[Ashutosh Desai]

Works. Thank you!