MATLAB: How to get coordinates of a curve in a binary image

binary imageimage coordinatesimage processing

Hi guys, I am having a binary image.How i can extract the coordinates of the curve from this image in matrix form? The image is attached for the reference.

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You can use find(). You are unlikely to be happy with that however. You probably want bwboundaries or bwtraceboundary

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MATLAB: Coordinates pixel (cpselect)

I would recommend using the function ginput instead, for example:

I = imread('rice.png');

imshow(I) %This is necessary for the ginput function expects a figure window to be open.

[x y] = ginput(n) %Where n is the number of points you need to interactively select.

and the x and y coordinates (of the pixel selected) will be stored in the vectors x and y.

Hope this helps!

MATLAB: How to extract a part of image whose coordinates are known

Use poly2mask

mask = poly2mask(x, y, rows, columns);
extractedPixelValues = grayImage(mask);

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Related Solutions

MATLAB: Coordinates pixel (cpselect)

MATLAB: How to extract a part of image whose coordinates are known

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