This component blurs a color image. It's expensive but reduces noise.
The type of blur. This is from the openCV documentation:
* CV_BLUR_NO_SCALE (simple blur with no scaling) - summation over a pixel param1×param2 neighborhood. If the neighborhood size is not fixed, one may use cvIntegral function. * CV_BLUR (simple blur) - summation over a pixel param1×param2 neighborhood with subsequent scaling by 1/(param1•param2). * CV_GAUSSIAN (gaussian blur) - convolving image with param1×param2 Gaussian. * CV_MEDIAN (median blur) - finding median of param1×param1 neighborhood (i.e. the neighborhood is square). * CV_BILATERAL (bilateral filter) - applying bilateral 3x3 filtering with color sigma=param1 and space sigma=param2.
The size of the square to average over.