Chapter 11
Line Detection
Detection of macroscopic features is an important part of image analysis and visual pattern recognition. Of particular interest is the identification of straight lines in images, as these are ubiquitous—appearing both on manufactured parts and in the built environment. The Hough transform (HT) provides the means for locating these features highly robustly in digital images. This chapter describes the processes and principles needed to achieve this.
Look out for:
• the basic HT technique for locating straight lines in images.
• alternative parametrizations of the HT.
• how lines can be localized along their length.
• how final line fitting can be made more accurate.
• why the HT is robust against noise and background ...
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