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\12tr +t] . +uJel =+ I =5 119 6. B-spline +Crl. +'l tglz'J+l Gordon$ RiesenfeldE B-spline +d + +tr el o}"l Q ol E 4l "J6'I9tr1. B-splineg Eil;(l q +d!+ ,Jol +4€ql 96lq +dol g+. Eilzlq * 4*zlzle r}4€E €trol "JdlzlE C^Jg +dE €t}g €7ll el+g + gttrI.B-spline +de Hlzlq +dE =4C+ spline +dE "Jacg -J+ ++ + *CgE rJzlBl 9leq, B-spline *d9 +41€E dg =AoJ glzlcl +str B-spline +d g Hil zl q +d r+ E "J 6L rll g +. r4^l B-spline +dg +qH+E +dE €ac(continuity)$ =+cql -a 54"1 9l-z 4zldE g^lE olE6}q +dE €4= +46}qs €?Col e*9- aol 54"1+. rE6J Elzlq +6J+dg lzl] r+dql gatl +dol dq4qs HeqI'-q +a + €tryl.-i"l gHl, +aL6J €tle-l g.€ql^i= Zltelol t*ol-zl4 B-spline9 r=i 9sz1 Stu1 B-spline +dq ++- +dE €4= +B4qE oJa}g i- ullf,fi(knot)ol az) 46eriodic) EE- toJ(uniform)d B-spline +d+, ,lEflol 'JzJ 6}z1 9*g a)az)4(non- periodic) IEts ulf oi(non-uniform) B-spline*C ol 9l+' ++.J +dg. s.€6I= rtlql=,lEttol "J4oJ + $lzl qlEql cAD/cAMql^l= alazl4 B-spline +dg r*ol ^I+6Ir., 4a/4 B-spline +Cg Ellzlol +d7lH .J Edg EII6I+ azl4 B-spline +dg * gdg E'+6Izl 9*=+. B-spline +dE cd-a- €+c, tri4€ql 4= €tI zl'J 7l*, 7.l q +"J^J, E H+el *ol C Eol 9l+ o €+c Elzlq +de 6I+9 4zl d9 Szltr ol*6}= +9+d+E "J+C ullEql +4 "J + gt= tlfaEzl "ll+ ,I6Jq+, B-splineg +zl dg ol-+4 +4 qE "J4C"l !- tlEJ tr}. ol= B-spline +dql^.1= 9- +EE +AE 6I+E +9 +dg +a6I- '/)+ +ol g + 9]trI- 4olrf. @ 44€ ql uI= 6J tI zl+ zI * El,.lq +dcl^l+ u|11z}zltr- B-spline +dE "JB 4z}€ol ^Jall^l E €€B + dg tltlg + 9lr+ @ zl q +'J€(+i4 tr€) 3z| B-spline +cg 4z\9 ol*6}= qzl fl41 E6Iq eaEJLI."JoJ +44 +ql
127page

6. B-Spline 곡선과 곡면
127page

6. B-Spline 곡선과 곡면
127page

6. B-Spline 곡선과 곡면