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 = 1.0 k = 1.26

Laplacian of Gaussian approximation.  = 1.0 k = 1.26. LoG approximation (G k - G  ) LoG. Laplacian of Gaussian approximation. Image pyramid (10 octaves). subsampling. Original image. -. =. First “octave”: 4 successive blurred image 3 corresponding DoG.

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 = 1.0 k = 1.26

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  1. Laplacian of Gaussian approximation  = 1.0 k = 1.26 LoG approximation (Gk - G) LoG

  2. Laplacian of Gaussian approximation Image pyramid (10 octaves) subsampling Original image - = • First “octave”: • 4 successive blurred image • 3 corresponding DoG

  3. Image pyramid visualisation Linearly interpolated and absolute value (for visualisation purpose)

  4. Other example Linearly interpolated and absolute value (for visualisation purpose)

  5. Other example Linearly interpolated and absolute value (for visualisation purpose)

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