Hiroshi Noborio Shozo Fukuda Suguru Arimoto Construction of the Octree Approximating a Three-Dimensional Object by Using Multiple Views. 769-782 1988 10 IEEE Trans. Pattern Anal. Mach. Intell. 6 http://computer.org/tpami/tp1988/i0769abs.htm db/journals/pami/pami10.html#NoborioFA88