Lecture 12 - Stanford Vision Lab
Lecture 12 - Stanford Vision Lab
Lecture 12 - Stanford Vision Lab
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Reminder: Hough Transform• Origin: Detection of straight lines in clutter– Basic idea: each candidate point votesfor all lines that it is consistent with.– Votes are accumulated in quantized array– Local maxima correspond to candidate lines• Representation of a line– Usual form y = a x + b has a singularity around 90º.– Better parameterization: x cos() + y sin() = yxyρxθFei-Fei Li<strong>Lecture</strong> <strong>12</strong> -335‐Nov‐11
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