The GaussianBlur Method will smooth the images using Gaussian transform. It makes images look softer and out of focus.

The radius parameter corresponds to the Standard Deviation (Sigma) in Gaussian transform. It can range from 0.1 to 500. Typical values for high-resolution images range from 1.0 to 2.0. Larger values will cause greater softening, and take more processing time. The width of the area considered for each pixel is approximately 6 * radius.  

Original Image	Image with Gaussian Blur Effect