"Pixilated means literally "affected by the pixies" (1848, from pixy–led: bewitched). A pixie is a playfully mischievous sprite (elf). That's why the proper spelling of pixilated contains only one 'l'. And the word has nothing to do with computer pixels (picture elements) and 'pixellation,' as reflected by the different spelling."
(Stephen X. Arthur)
Fig.1 Adam Pesapane 'PES' (2007). "Human Skateboard".