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Difference of Gaussians

Difference of Gaussians. Nick Govier Dave Newman. Introduction. Edge detection technique Uses two Gaussian curves In this case, DoG (Blue) = Gaussian 1 (Red) – Gaussian 2 (Green). DoG in 3D. Applying to an Image. Further Processing.

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Difference of Gaussians

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  1. Difference of Gaussians Nick Govier Dave Newman

  2. Introduction • Edge detection technique • Uses two Gaussian curves • In this case, DoG (Blue) = Gaussian 1 (Red) – Gaussian 2 (Green)

  3. DoG in 3D

  4. Applying to an Image

  5. Further Processing • Once the DoG has been applied to the image, need to find the zero-crossings, which are the edges: • Threshold the output to form a binary image • Find edges of binary output

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