Wednesday, December 05, 2012

Hough transform from wiki

from wiki:

  • For each data point, a number of lines are plotted going through it, all at different angles. These are shown here as solid lines.
  • For each solid line a line is plotted which is perpendicular to it and which intersects the origin. These are shown as dashed lines.
  • The length (i.e. perpendicular distance to the origin) and angle of each dashed line is measured. In the diagram above, the results are shown in tables.
  • This is repeated for each data point.
  • A graph of the line lengths for each angle, known as a Hough space graph, is then created.

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