He has been besieged by birds, had 120m crabs try to crawl up his trouser leg and stayed cool beside an erupting Icelandic volcano. As David Attenborough turns 100, we celebrate his most extraordinary ...

Designing multi-layer (grayscale) masks from analytical and/or numerical (e.g. Gerchberg–Saxton) methods Designing single layer (binary) dithered masks from grayscale masks Designing rudimentary ...