How do I remove grid lines from a JPEG image using Image Processing Toolbox 6.2 (R2008b)?

5 views (last 30 days)
I have a grayscale JPEG image that is largely dark and contains thin gray grid lines. I would like to replace the pixels forming the grid with pixels that fit in with the rest of the image.

Accepted Answer

MathWorks Support Team
MathWorks Support Team on 6 Apr 2013
The following example code demonstrates one way to remove thin grid lines from an image using erosion and dilation and compares the original image with the processed image.
close all; clear all; clc;
% Create image with light gray grid lines
I = imread('snowflakes.png');
I(:,[100,200,300]) = uint8(200);
I([50,100],:) = uint8(200);
subplot(2,1,1);
imshow(I);
title('Original image');
% Morphologically open image
se = strel('square',2);
I2 = imopen(I,se);
subplot(2,1,2);
imshow(I2);
title('Morphologically opened image');

More Answers (0)

Categories

Find more on Image Processing Toolbox in Help Center and File Exchange

Products


Release

R2008b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!