CompassAngleImg
DESCRIPTION
Computes the directional gradient of an image in the direction given
by the Angle parameter. Directions are compass headings, with North
being 0 degrees and proceeding clockwise. The gradient is computed
using a square kernel whose edge length is governed by the Kernel Size
parameter. The Bias parameter adds a constant amount to the output
gradient array. This directional gradient computation is described in:
Digital Image Processing, Gonzales, R.C., Wintz, P.,
Addison Wesley, Second Edition, 1987, pp 176--179.
INPUTS
Port: Img In
Type: Lattice
Constraints: 1..3-D.
source image
WIDGETS
Port: Angle
Type: Dial
angle of rotation
Port: Bias
Type: Slider
additive bias
Port: Kernel Size
Type: Slider
one side of the square kernel
OUTPUTS
Port: Img Out
Type: Lattice
Constraints: 1..3-D.
directional gradient image
PROBLEMS
SEE ALSO
CompassDirImg
CompassImg
Gradient
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© The Numerical Algorithms Group Ltd,
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