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B E C ? MNL D ? EC7M 'E B KB GF B H B JIK#'#)6 G L P{xv|]{x |] {}| +M D|];b}I ONP 9{x  !Q GK 0R  B DTS @IK UWVYXK11 G ? EEC E B B B  0B ,Z 5B S K1 & G NP 9{x k 0[\ s|]~ ]P ({ I >^ QvIqx{ {x; _Q D H;1& GS? EE? @E B MB  0B 3`9 G ba jB 3c B 3ZK dU G eZ 5B `9.""1. !G Waf gVh"1)++i j1+ i0"#k."1Rlj##0*,j1 )+ )+#"& G 4OmK* !B 79 B n,o GKI 0B I C KIMNC D ? EEI E B LB a jB fp)6(qF B fX]#rsVYKrs 1. !G 6:fj"!Vt;rs#VY1)+ ."#W2l#*J0"#.R$'&;!#j" u #*"1. !G 4OmK* !B K!"Ovw GIMI C IFLI D ? EDK E B CB GF B af#.  G 9:fj"!VY1)+ ."#x#1uW.rs#)y!#"" 10# G 4t]**, B ,mK* !B ,nJz G%IFL B D C IFL7MM D ? EED E B INB GF B F B 79.i!VY:0$J# G uZ 5B S . !G 6F B uI{0| }  G 3:fj"!VY1)+ ."#u#$x !" !#"#~$'&c# .rs#)*"#02#)+"& G 46]**, B ,mK* !B ,n, G MIFCFA @C NMIFCL D ? EEE E B DB GF B I{"""#0VYp);| G (F B S   . . !G (m 5B I{1,|# G mK$x !;" !#"#."1"j"!V 1)+ ."#!#"" 10"#l#rG1)60 . !G 4OmK* !B 79 B ,n,w GKDKD C KD B ? D KFAAA uE B EB p B F i13(7 B :@x"j'! G :fj"!VY1)+ ."##$x !]" !#"#($'&l.#r"3j##V *,ju& G 4OmK* !B 3 !B Jv, %GC?!A @C C? K D KFAAA uE B   ?!AB  B c  G 7 B ,:@x"j'! G S B VY 0B  ."# G ,lp B F i1 G Z{1.#""#Vh#uf"j"!VY1)+ ."# #$x !f" !#"#lU]"jl"bj##0*,ju& G 46]**, B ,mK* !B  A G B DDI CB DE B D KFAA? @E B ??FB `9j B 0aR|rs|+c B uIK#1 G J'"0"1."1*"#! ."."1K#r,*J#10 0"#~i."Y&G1)60 . !G 4>1 NP 9{}|   ![ {xv|]  L   |]b~f{x |]  v|b _QQ bY?  WNP 9{x  !Q  |] L   |]b~f{x |]  P Q I{ I~ Q G `"# FB `587 3  R3? D KFAA? @E B ? KB GF B X 0B ,p1 G Z 5B a jB X]"# !G F B 7 B I{110j G Z 5B ` <B ,af#. rs 1 G  0B Z 5B H;j G (Z 5B ,F B pV # G GZ{"U irs"#uO)+ ."1%1u"rs"#)+6rs#+ ."1e#*"1W.""rT! .+  . . !G 4 ]**, B ,mK* !B 3?'n GKCE B C KI7A B D ? EIM 'E B ? B B >5 eB  )60jK : B  Jj G G`9j.!VY."jrs"1k"Wj##0*,ju& G 4mK* !B 93 !B Wv,v %G ? KCD C ? KI7A D ? EEI E B ? MB S B ua]0$$, G  T ![ {    P I Q '|] L ~? ~\ s|]Y?]( l\ s|]~ ]P ( _QQ b |] G `587 S 1 .#K' .  6   D `587 `" .". !GS? EEK E ? LB  B ,` <B  0"#."1 i.d'&(  0B J B S " &0d#@i G  {Y;| Q .|  m fx{} 0[  A| 0[ |fv P Pq D  #.""u".]p"  G  ]U  #"d G<? EDFA uE B ? CB m 5B @p"&jc B @H &'"#@U].d G Z{"uj##0*,ju& ! !#)+*,Vh 0 j##)6. !G 4]`"# B 1mK* !B v GS? C DC D ? EEFA uE B ?INB GF B bH B IK#'#)6kea jB bH B  Uf" ! G ]Z{"1)606rs#)60"#%rs"#)  !"#11&/ !  j##)6. !G 46]**, B `9ju&. !B 3 !B ?,? G%II C IFE D ? ECI E B  ? DB GF B @H B uIK#'#)6 0B 1i . G ,Z{"u" !#.!"##r,j##0*,j11)60 . !G 4  ]" ) af !# ?'A GS?? D D ? ECD E B ? EB  0B up11 G 'I 5B  U  G u S B uH B S 0! 111 G 3:fj"!VY1)+ ."#1)60]!#)+*" ."."#6U]"j61u U i ].rs#)6. !G 4+]**, B ,mK* !B ,n,w GS?IFEE C ? D? M D KFAAA uE B KFAB  B  1 G 3 0B p B X]#111 G bZ 5B F B bH;1111)6. !G bkZ 5B S 0d G ]c."j"!VY1)+ ."#0"(!#)~V *" ."."#+#r3ju&'*J.*J !1)60"&6."1>i !#  'u" 0"#tU]"j6.*J !gVhrs 0""!Vh$,. t$,10"& !#1 G 4tmK* !B 79 B ,n %G B K7MNK CB K7MNE D ? EEC E B K?FB I 5B F B ,7U]16  B F B He#'#  ,G 9  #)+*,01.#l#rF`97I lrs!"gVh$,. /1)60G!#)+*" ."."# #l"0"K  '1.""#R$'&Rj')6R#$,."i. !G 4OmK* !B ,79 B ,n %GKD7M C KDD D ? EEC E B KKB  B  0B S ##d0 G S B ` <B 79"d. 1 G F B  B p0""#  ,G F B XK."  G I 5B Kj0#@i G  F B 9 B H;j8V 1 G KmK$,."i~*J"rs#)6!trs#6F`97I i. !B Hk i 61)60l!#)+*" ."."# #rW-'Vh & !#"#0"& V #)6. !G 4OmK* !B 7-*" .".K %G D C ? E D ? EEE E B K B B S B bH B 3c0kkF B bH B IK#'#)6 G fp#.{#e"j+*J"rs#)6!~#r!#u"1'#.>  'u"  *,j.!Vh#&O)60"j l2. !G 46F'm  z GCC C IFK D ? EEFA uE B K7MB  0B S j1#$,1.  B 0Z{ 1 G Z{0"!#)+*" ."."#~!#"" 10"#G21 G 4K1  P~]I{ L ~fY?  P Q I{ I~ Q G J`587   w3? D `587 `" .". !G KFAA? @E G ** B??? C ? B KB KLB GF B 0# G X 0B )+   G l 0B " G c.Kc#f.rs#)$,. (1)60G!#)+*" ."."#l#0V "j)#*"1)6 Rrs#].*J "d1u"rs"#)+K)+ ."" )+ u". !G 4OmK* !B 79 B n,o G B FALK CB FAC B D ? EEI E B   KCB a jB jj0 G F B c B Hkd* G  : B c B  1 G f858)60O!#)+*" ."."#k1k."gVY*J  u#1. G 4 ]**, B ,mK* !B ,n, GLLCFA @C LLCI D ? EEE E B KINB c B S ""0j G F B VY B '"0"d G  S B 3#&. !G 8"&uVYjjV  '1Y&61)60{!#)+*" ."."#6$,. t#R#1. )+# 11 G 458u !B F B 58)601O'&. !B : j# B w G B D C NMNL D ? EED E B KDB c B H &'"#@U].d9m 5B p"&j G f'*J "d!Vhrs"t" !#.!"# 1k"j##0*,ju& G 4%F B mK* !B '# FB K) +B , o GS??I? C ??IM D ? EDE E B KEB : B  ]#) G b 0B mKd00 0d G S B  )+  G  B S #1)+## G 3/p B 3F i1 G Z{"j##0*,j1G0" " !#.!"#lU]"jl0"6!#)+*" ."."# G 4+`"# FB `587   bzJ? D KFAA? @E B B FAB 7 B  B 3)kF B bH B IK#'#)6 G WZ{1."!"6!#."1~.rs#)#)61/" .#0"#e#rrs#.  1)60 . !G 46]**, B ,mK* !B ,nJz GCK? B C CK? D D ? EED E B B ?FB GF B H B IK#'#)6   0B S B 1i . G {'#)+l  J !".6#r{c#6#)61*,j.  'u" 0"# G 4 58p S F B af . 0j(ZKi B ?  G MIFD C NMND7M D ? EI7A uE B B KB >H B 'F B uZ{11.6 0B uH B u3#j)6 G 3`9j.  'u" 0"#t1+j##)6. !G 4]**, B 'mK* !B ?,? G? EK C ? E7M D ? EIFK E B BB B X 0B F B  g2, 1 G  A](  ||  |  tNP 9{x k 0[  A| 0[ |fv P Pq D K )61`" .". !G ? EIFE E B B 7MB Z 5B  0B XK  b)6 G ])+"j#ers#G"jt!#.!"#e#rW)611)) " !&/!# . !G 4`"# FB b58a]7  A GS?!AED C ??!A? D ? ELK E B   B LB GF B  Jil/ 0B J3 )+*J  G 9 i."#"j) rs#{.  ' u"10"O!#)+*" ."."# G 465879797;:. !B 4 <>=!vn G ,BB I CB 7M uB D ? EII E B B CB : B ' 0B He 1j G q j  ']rs#Wjj6*J"rs#)6!{0"!#)+*" ."."# G 4G5879797  #)+*,{?z GD C ? E D ? ED7M 'E B B INB S B p""#@U].RZ 5B F B 'H;j  G  $,#"duVY.#""1~#."." .".0"~!#)+*" ."."#O#"j) +G 4Z{" a  ;af*J#" j? K7M D ? EE7M 'E B B DB p B F i1 G W  ]#11 0x#1u{*J#@UG.*J !) $,. %#*"1!#"" 10"# G 4l]**, B mK* !B v G<K B LD C K B CI D ? 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K G."$,.#rb" j##) # BS?FB   c BMB af .")+*,11G#r3"j>",j##)  D uE9*,#9#rj##)."1K "j D " 1V "if#"jW#1."1f "jE01.11 06#11 0!#"" 10"#+*J"rs#)6! rs#"j"1u"*J#10"#G.0 .  D $JE3. 0j1]"j  VY-1.rs#~0**"#*10  g #  b. rs#]6j##)y" .">#r JAB EI +l$,111 01u"*J#10"# B c BNLB af ." 1{j##) # B ? U]"j"j"W  J" u1u"*J#10"#~.0 .~"j  ."1]#&"jf)+*,1"91rs#)60"#~1G"j" !#.! +#$x !*,1 B `9#".rs# D uE #)61 Ra S t  J" ! G  D $JE9#)61 R!"#.".8VY!#"" 10"#R*J 0dOj ju !G ."j#@U "j  J !f#r" ." 1~$J#"jlU]"j#21+RU]"j ??  ?? >*,g- J)+ 1R21 B c BCB  u" 0"#/U]"j/j##) # B,?  D uEK#)61 a S   J" ! G J D $JE #)61 (!"#.".8VY!#"" 10"#*J 0d(j ju !G ,*,# /01.K')G$Jf#r$,".]1( j/#r "j" 3l1)6010"&ti01 . !B c BSINB baf !#.! e)+*,1" .]rs#>j##)# B,? rs#>i00#.K')G$J.]#r  'V " 0"#ki 1.%U]"j ??  #?? +*,g- )+ 1/21  D uE M ($,". D ? L  'u" 0"# i 1._E  D $JE+Be$,". D I  'u" 0"# i 1._E  D @E L  'u" 0"# i 1.  D E \K e$,". D B  'u" 0"#(i 1._E B c B@DB af )+#@i1c#R!#'  O u".Ors"#) j##) # B ?  D uEt#)61  a S    J" ! G  D $JE#)61  !"#.".8VY!#"" 10"# *J 0d j ju !G .~rT!"#.#rKZ{c: !#'  O u".f""1  G rs#fi00#.f)+ 1O2f ju$J#j#'#. !B ; 3D object BS Ar laser l/2 l 4/ M1 L SF d CCD BS M2 M3 M4 RP1RP2 SF L Rd^YG;F9SbU4;M95.BL@(BDCE<?F9G;6HI8;J UNHE<?VB  [ Compression U0 PSI H0Transmission or storage Decompression H0’ DP U0’Correlation result U(x,y,d) ≈U0 U0 PSI H0 DP 3D object 3D object (a) (b) Rd^YG;F9SbU  M95.BL@(BDCE<?F9G;6HI8;J UNHE<?VB   (a) (b) (d) (e) (f) (c) Rd^YG;F9SbU [ M95.BL@(BDCE<?F9G;6HI8;J UNHE<?VB   X]# B    II   H XK  ,B pH   II   H XK  ,B pH # B D dpfE D dpfE D dpfE D dpfE D dpfE  FB  B  FB  B  FB  B  FB  B ? C7MIFCE E B LC  E? KI DE B ?  DIFE? ? B DEE  ? B FANIFE C B DE  CKC B B B LFA B B CL KB MA LBH? K K C7MIFCE KEDEFA  KEIFLK B K B DL  B K B DL B FAEDI  B ?!AAE K7MM ? B  K7M ? C B ?FB AE ?FB AA ?FB AFM ?FB BB B C7MNC7MNK IFKL7M  D? DFA IIMI  D B ? D KI? L7M  KIFKDK MNL? K  L? EE MBH? E MB AK ?FBH? E CB CC M C7MIFCE E7MNCL  E? KL EFAFMI  DDFAL ? B D? L  ? B FAKI CL? K  CKD B B B MND B B C B KB M ? LB AC L C7MIFCE EKKI  EFAC? DD B E  DI? D ? B 7M uB E  ? B FADK C BB C  CKCL B B L7M B B CE KB MM LBH? M ]i0 .  B BH? C B B KFA ?FB EFA MB CC :0$, ZKB  #)+*" ."."#U]"j%  IING b  H G bXK  b)6 G J%pH G bU]j /"j+j##)1. " 0 .fYU#O.*,00" 3(1)6010"&O0"6." )6.  , FB  B  !#)+*" ."."#R0 B [ 