What is the equivalent smoothing function to running the same Gaussian 8 times?

1. Which is also known as Gaussian smoothing?
2. What is a Gaussian smoothing kernel?
3. What is the difference between Gaussian filter and reference?

Which is also known as Gaussian smoothing?

In image processing, a Gaussian blur (also known as Gaussian smoothing) is the result of blurring an image by a Gaussian function (named after mathematician and scientist Carl Friedrich Gauss).

What is a Gaussian smoothing kernel?

The Gaussian kernel

The 'kernel' for smoothing, defines the shape of the function that is used to take the average of the neighboring points. A Gaussian kernel is a kernel with the shape of a Gaussian (normal distribution) curve.

What is the difference between Gaussian filter and reference?

Difference of gaussians is a grayscale image enhancement algorithm that involves the subtraction of one blurred version of an original grayscale image from another, less blurred version of the original.