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SURF: Speeded Up Robust Features, ECCV 2006. Herbert Bay, Tinne Tuytelaars, and Luc Van Gool - page 4 / 22

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4

Methodology

Using integral images for major speed up

Integral Image (summed area tables) is an intermediate representation for the image and contains the sum of gray scale pixel values of image

Second order derivative and Haar-wavelet response

Cost four additions operation only

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