title: Javascript image noise detection
body: <p>I'm working on a project where I receive an array of images taken with cell phone cameras, which vary wildly in quality. I want to exclude any images that have a high amount of image noise and then save/display the rest. </p>
  
  <p>Every JS image processing library I've looked at so far mentions noise-reduction or the ability to add noise to a canvas image, neither of which fit my use case of simply needing to flag if an image is too noisy or not. Ideally, it would be something I could do in the browser with canvas, but I would also consider a server-side library where I could process the images there and send them back. </p>
  
  <p>Is this at all possible? I do not have much knowledge when it comes to computer vision / image processing, and would appreciate any resources/libraries/approaches suggested. </p>