A box blur (also known as a box linear filter) is a spatial domain linear filter in which each pixel in the resulting image has a value equal to the average value of its neighboring pixels in the input image. It is a form of low-pass ("blurring") filter. A 3 by 3 box blur ("radius 1") For algorithm and concept behind, please refer to the project reference belows.
Project Reference: https://en.wikipedia.org/wiki/Box_blur#:~:text=A%20box%20blur%20%28also%20known%20as%20a%20box,blur%20%28%22radius%201%22%29%20can%20be%20written%20as%20matrix Image scanning: "https://scratch-image-scanner.slmj.repl." plus "co" (bad-word detector not allows the URL) from project by MonkeyBean2 : https://scratch.mit.edu/projects/631798903/ Thank you MonkeyBean2.
