'Edge localization' diaporamas de présentation

Discrete Images (Chapter 7)

Discrete Images (Chapter 7). Fourier Transform on discrete and bounded domains. Sampling function. Given an image: Zero boundary condition Periodic boundary condition (tiling images) . Main point: Fourier transform is still valid with each condition and depends only .

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Targil 2 Image enhancement and edge detection.

313 views • 19 slides

Canny Edge Detector

Canny Edge Detector. Smooth image with a Gaussian optimizes the trade-off between noise filtering and edge localization Compute the Gradient magnitude using approximations of partial derivatives 2x2 filters Thin edges by applying non-maxima suppression to the gradient magnitude

1.22k views • 11 slides