How do I apply a Custom Filter
问题 I am using AlamofireImage to download an image from my CDN however I would like to apply a custom filter (Grey Scale) to SOME of the images that are downloaded. Currently I am using a scrollView to show all available images and if an image has a particular attribute, apply the filter. I am new to AlamofireImage so I don't know how to apply a custom filter. I have applied let imageFilter = BlurFilter(blurRadius: 10) to the filter parameter so I know the actual filter process is working but can