Orientation

• The orientation is calculated using an algorithm developed by Rao:

  • Gaussian filter
  • Calculation of the horizontal and vertical gradients of the Gaussian smoothed image
  • Calculation of an angle at each pixel from images of the horizontal and vertical gradient
  • The dominant angle is calculated in the neighbourhoods to produce an angle image

• The final angles are between 0° and 180°, as we are dealing with axial data, and not vector data.

Previous slide

Next slide

Back to first slide

View graphic version