Nice. If you are doing heavy blurring, it's a good idea to scale down before applying gaussian blur anyway for a performance boost, as the blur processing time

Nice. If you are doing heavy blurring, it's a good idea to scale down before applying gaussian blur anyway for a performance boost, as the blur processing time grows with blur radius. Ie. downsample 4x-8x, blur at smaller px radius and resize back to orig size - much faster than blurring at original resolution, and looks almost identical.