The image shown is a blurred, 2-D projection of a volumetric rendition of a heart. It is k...

The image shown is a blurred, 2-D projection of a volumetric rendition of a heart. It is known that each of the cross hairs on the right bottom part of the image was 3 pixels wide, 30 pixels long, and had an intensity value of 255 before blurring. Provide a step-by-step procedure indicating how you would use the information just given to obtain the blurring function H(u, υ).