Problem with image processing using edge detection

I am trying to do image processing using edge detection on several images. But it's working for all the images except the one I cropped and edited. Please help me. I really need to get this done.

[KALYAN ACHARJYA]

Share the image and your code

[Shahrin Islam]

% Display the original Image image = imread('stop.jpeg'); % Read Colour Image and convert it to a grey level Image myimage = rgb2gray(image); % Apply Sobel Operator % Display only Both Edges sobelhz = edge(myimage,'sobel','both'); imshow(sobelhz,[]); title('Sobel - Both Edges');

Answer 1

[KALYAN ACHARJYA]

%Change the file name, save as some different name.

% Close Matlab and Restart it again

% Nothing wrong in the following code

clc; clear all; close all;
% Display the original Image 
image=imread('safety night.jpg');
% Read Colour Image and convert it to a grey level Image 
myimage=rgb2gray(image);
imshow(myimage);
title('Gray Scale Image');

[Shahrin Islam]

Thanks I will give it a try. Can you please enlighten me on the question following the link - https://www.mathworks.com/matlabcentral/answers/412353-want-to-get-all-outputs-together-as-one-in-image-processing

thanks in advance

Answer 2

[Diwakar Ravichandran]

Hi Shahrin,

I tried reproducing the issue,

One thing for you to note in your code is that the name of the image is different in the code. The file is named stopD.jpg, and your code is calling stop.jpeg.

So, that could be one cause of the issue. When I did try to reproduce I got an output which I have attached. Please verify that it is the correct output.

Hope this helps,

Cheers!

[Shahrin Islam]

Thank you so much for your response. The main problem is my code runs and shows the outputs. But after sometime it just doesn't work and says the problem is in 'imshow' command. But unfortunately I don't find any problem there so I don't know what to fix.

[Diwakar Ravichandran]

Would you mind sharing your code? Or the error message that you received

It can help reproducing the issue

[Shahrin Islam]

% Display the original Image image = imread('safety night.jpg');

% Read Colour Image and convert it to a grey level Image myimage = rgb2gray(image); imshow(myimage); title('Gray Scale Image');

[Shahrin Islam]

>> gray Attempt to execute SCRIPT gray as a function: C:\Users\User\Desktop\matlab algorithm\images\new\gray.m

Error in images.internal.imageDisplayValidateParams (line 45) common_args.Map = gray(256);

Error in images.internal.imageDisplayParseInputs (line 78) common_args = images.internal.imageDisplayValidateParams(common_args);

Error in imshow (line 241) images.internal.imageDisplayParseInputs({'Parent','Border','Reduce'},preparsed_varargin{:});

Error in gray (line 6) imshow(myimage); title('Gray Scale Image');

Answer 3

[Shahrin Islam]

In first comment I have attached the code and file and in the second comment I mentioned the code error. Please help me.