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Linking Canny Edge Pixels with Pseudo-watershed Lines



Javier Bernal


A method is presented for computing pseudo-watershed lines that can be used for linking pixels that have been identified as edge pixels with the Canny edge detector. An additional procedure is also described for filling breaks that may still exist between these lines and that takes advantage of the data structure for computing pseudo-watershed lines. We have implemented the Canny edge detector together with these methods, and have demonstrated the ability of the implementation to produce complete characterizations of outer boundaries of cells in an image.
NIST Interagency/Internal Report (NISTIR) - 7673
Report Number


Canny edge detector, pseudo-watersheds, morphological watersheds, Gaussian filter, gradient, hysteresis, digital image processing, linking edge pixels


Bernal, J. (2010), Linking Canny Edge Pixels with Pseudo-watershed Lines, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed April 18, 2024)
Created March 1, 2010, Updated February 17, 2020