... Computer Graphics, 20 (4), pp. 85-94. YACEL, R., D. COHEN, AND A. KAUFMAN (19 92) . "Discrete Ray Tracing", IEEE Computer Graphics and Applications, 12( 5), pp. 19 -28 . YAMAGUCHI, ... 501 -2 hmSpaI'tIIV, 510 Cohen-Suthnland line-clipping algorithm, 22 6-30 .23 2 Cohemnce. 119 -24 . 471 Color chmmathty. 567 chmmaticlty diagram, 569-71 chmmatic~ty values, 569 coding, 25 ,396 ... Computa Graphics Interface (CGI), 79 Computer Graphio Metafile (CGM), 79 Concatenahon (matrix), 191,6 12- 13 Concave polygon splitting, 23 5-37 Cone filter, 174, 175 Cone receptors, 5 72 Cone...