How do I gaussian blur an image without using any in-built gaussian functions?

Question

I want to blur my image using the native Gaussian blur formula. I read the Wikipedia article, but I am not sure how to implement this.

How do I use the formula to de

Answer 1

Well, Gaussian Kernel is a separable kernel.
Hence all you need is a function which supports Separable 2D Convolution like - ImageConvolutionSeparableKernel().

Once you have it, all needed is a wrapper to generate 1D Gaussian Kernel and send it to the function as done in ImageConvolutionGaussianKernel().

The code is a straight forward C implementation of 2D Image Convolution accelerated by SIMD (SSE) and Multi Threading (OpenMP).

The whole project is given by - Image Convolution - GitHub.