LocalWeightedMeanTransformation2D
2-D local weighted mean geometric transformation
Description
A LocalWeightedMeanTransformation2D
object encapsulates a
2-D local weighted mean geometric transformation.
Creation
You can create a LocalWeightedMeanTransformation2D
object using the
following methods:
The
fitgeotrans
function, which estimates a geometric transformation that maps pairs of control points between two images.The
images.geotrans.LocalWeightedMeanTransformation2D
described here. This function creates aLocalWeightedMeanTransformation2D
object using coordinates of fixed points and moving points, and a specified number of points to use in the local weighted mean calculation.
Description
tform = images.geotrans.LocalWeightedMeanTransformation2D(
creates a movingPoints
,fixedPoints
,n
)LocalWeightedMeanTransformation2D
object given
control point coordinates in movingPoints
and
fixedPoints
, which define matched control points in the
moving and fixed images, respectively. The n
closest points
are used to infer a second degree polynomial transformation for each control
point pair.
Input Arguments
Properties
Object Functions
outputLimits | Find output spatial limits given input spatial limits |
transformPointsInverse | Apply inverse geometric transformation |
Examples
Algorithms
The local weighted mean transformation infers a polynomial at each control point using
neighboring control points. The mapping at any location depends on a weighted average of
these polynomials. The n
closest points are used to infer a second
degree polynomial transformation for each control point pair. n
can
be as small as 6, but making it small risks generating ill-conditioned
polynomials.