olemus
raalgraafikas: alati vaataja poole pööratud kahemõõtmeline element kolmemõõtmelises ruumis
Wiktionary:
4. (computer graphics) a sprite that always faces the screen, no matter which direction it is looked at from

ülevaateid
https://en.wikibooks.org/wiki/Cg_Programming/Unity/Billboards
http://www.computer-graphics.se/TSBK07-files/pdf17/10c%20Billboards.pdf
www.opengl-tutorial.org/intermediate-tutorials/billboards-particles/billboards/

vt ka
- reklaamitahvel
- tahvel (1)