title: Preserve Color with Gaussian Blurring and Sobel Operators
body: <p>I want to utilize a gaussian blur on an image as a preprocessing step to using a sobel edge detection filter.</p>
  
  <p>I have previously implemented sobel and gaussian blurring operators on a greyscale image effectively, however, I have never attempted to use them on color images.</p>
  
  <p>Previously, I have just been taking the red component of my pixel data as the RGB are all the same in greyscale.</p>
  
  <p>Do I need to first convert my RGB images to greyscale?</p>
  
  <p>If not, how can I use all 3 color channels with the kernels for each operator?</p>