Good way to identify similar images?
- by Nick
I've developed a simple and fast algorithm in PHP to compare images for similarity.
Its fast (~40 per second for 800x600 images) to hash and a unoptimised search algorithm can go through 3,000 images in 22 mins comparing each one against the others (3/sec).
The basic overview is you get a image, rescale it to 8x8 and then convert those pixels for…