Read image using imread based on the number of loop

Hello, i need some help. im using imwrite to get the process image using ip cam and rename it base on the number of looping (example if first loop image name will be im0.jpg). that have been success. but the problem happen when i want to read back the image bafore this using number of their loop.

like when in the first loop, it will generate im0.jpg

then i want to read back the image im0.jpg in the directory.

This process happen continuously until im1.jpg, im2.jpg, im3.jpg.

while (i<==50)
   %process data~~
imwrite(data,sprintf('im%d.jpg',i))


b = imread(['folder_path\im''num2str(i)''.jpg']); %error happen here

[KSSV]

What error? I think image is not present in the folder.

[MOHAMMAD AZRUL AIMAN]

Yeah. i change the folder directory and remove the sign at num2str and it workss. thank you <3

Answer 1

[Walter Roberson]

filename = fullfile('folder_path', sprintf('im%d.jpg', i));
b = imread(filename); 

[MOHAMMAD AZRUL AIMAN]

thank you for your answers