Parent Topic: Improving Performance
Reducing CPU Usage
When considering which resampling technique to use, it is important to
realize that Cubic Convolution can take substantially more computation
effort than Bilinear, or Nearest Neighbour resampling. On today's fast
workstations, this is less of a factor than it once was; however, if
you believe that your registration time is being limited by the required
amount of computation (CPU usage), switching from Cubic Convolution to
another resampling method will speed things up.
Another factor affecting CPU usage is the order of the polynomial
used to perform the geometric warping. The polynomials have to be
evaluated for each pixel in the output image. High order polynomials
require substantially more operations to compute than low order
polynomials.
Parent Topic: Improving Performance
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