MATLAB: How to count Image Edges with Different between space

edgeimage processingImage Processing Toolbox

Image Edges Count with different Space Different ?

Best Answer

Take your edge image (make sure it's binary) and label it:

[labeledImage, numberOfEdges] = bwlabel(edgeImage);

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MATLAB: To find length of edges

The edge image returned by edge() is a logical image. So to get the length of all the edges, you do

lengthOfEdges = sum(edgeImage);

To get the number of edges:

[labeledImage numberOfEdges] = bwlabel(edgeImage);

To get average edge length (which you didn't ask for but I'm giving you anyway in case you need it), it's

averageEdgeLength = lengthOfEdges  / numberOfEdges;

To get the average number of edges you have to define (like Walter asked) what you're averaging over.

MATLAB: How can i find edges in an image

i want to implement edge detecting methods like canny,fuzzy and sobel techniques.how can i do that?is there any code for that?

Let say image_test is a gray image, for detail documentation of edge detection, read here

image_test=imread('image_file_name.format')
%............................example^ pic1.png
image_edge=edge(image_test); %sobel by default
imshow(image_edge);

For Canny:

image_edge=edge(image_test,'Canny');

For Fuzzy edge detection, visit here, all explanation is there.

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MATLAB: To find length of edges

MATLAB: How can i find edges in an image

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