What is the use of Gaussian blur in the digital conversion of a sketch?

Gaussian blur is used in the digital conversion of a sketch to smooth out rough edges and reduce noise, creating a more polished appearance. By applying this filter, the sketch can achieve a softer look, blending lines and shading seamlessly. This technique is particularly useful for preparing images for further editing or for creating a more aesthetically pleasing final product. Additionally, it helps in highlighting essential details by softening distracting elements in the background.