Wolfenstein 3D made use of Ray Casting algorithms The next major advancement with Ray Tracing was that of Recursive Ray Tracing. Older algorithms lacked realism because they didn’t account for ...

Wojtek Pych, A Fast Algorithm for Cosmic‐Ray Removal from Single Images, Publications of the Astronomical Society of the Pacific, Vol. 116, No. 816 (February 2004), pp. 148-153 ...