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1 Journal of Technical Physics

1 1999

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Contour detection with the application of image convolutions with derivatives of Gaussian functions /\\$\ T. Niedziela, A. Stankiewicz, I. Merta

Niedziela T., Stankiewicz A., Merta I.

Journal of Technical Physics

1999

Vol. 40, no 2

181-188

The authors propose a method for extraction of a contour understood as an inflexion point of an image function in the direction of the image gradient vector. In the computer program accomplishing the method, the contour is detected as a passage through zero of a directional derivative of a scalar gradient field (gradient module) of a smoothed image (convolution with a Gaussian function), where the direction of derivative is the direction of the gradient vector. The method is illustrated on the basis of a highly noised image, where the comparison is made with the results of application of other existing definitions of the contour.