I want to crop image for each side column(left and right).

I am trying use this code,but it crop each row(up and bottom). How to crop it trough each 10 column left and right?

    clc;
%%read the image
IMG = 'laluan.jpg';
I = imread(IMG);
IJ = rgb2gray(I);
IK = double(IJ);
%crop 10 pixels off each side
IK = IK(50:end-10, 50: end-10);
originalImage = uint8(IK);
subplot (221);
imshow(I);
subplot(222);
imshow(originalImage);

Answer 1

[Image Analyst]

IK = IK(:, 11:end-10); % Crop 10 pixels off each side, none off the rows.