Answer Posted / Anjani Kumar Dwivedi
SDGD (Sobel, Derivative Gaussian, and Laplacian of Gaussian) filter is a combination of three edge detection filters: Sobel, Gaussian, and the Laplacian of Gaussian. It aims to combine the advantages of these filters by using the Sobel operator for initial edge estimation, the Gaussian filter for noise reduction, and the LoG filter for edge enhancement.
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