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Monthly Archives: August 2013
negative numbers
Reading Turnbull The Great Mathematicians. Why did the idea of negative numbers confuse us as kids? Because there's no such thing. 2 is an order to subtract 2. It's an operation. 3 + 1 = 2 means subtracting 3 and … Continue reading
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generalized Hough
Generalized Hough is used for an arbitrary shape. The shape is parameterized by the center point and the set of vectors leading from the boundary points to the center. These displacement vectors are indexed by the orientation of the tangent … Continue reading
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hough transform
A Hough transform is an algorithm used in computer vision (image processing) application. A computer image is a 2D array of values. To identify a particular object in an image, we see if it matches a model for the object. … Continue reading
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