Problem with image processing using edge detection

Question

Shahrin Islam 2018-7-27

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/412330-problem-with-image-processing-using-edge-detection

评论： Shahrin Islam 2018-7-27

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.

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KALYAN ACHARJYA 2018-7-27

编辑：KALYAN ACHARJYA 2018-7-27

Share the image and your code

Shahrin Islam 2018-7-27

stopD.jpg

% 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');

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Answer 1

KALYAN ACHARJYA 2018-7-27

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/412330-problem-with-image-processing-using-edge-detection#answer_330576

编辑：KALYAN ACHARJYA 2018-7-27

%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');

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Shahrin Islam 2018-7-27

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

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Answer 2

Diwakar Ravichandran 2018-7-27

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/412330-problem-with-image-processing-using-edge-detection#answer_330566

ans.fig

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!