Title: Precise Color Communication(In Gujarati language) : A Study booklet for Understanding Color & its science.
1- PRECISE COLOR COMMUNICATION
- ?????? COLOR ????????????
- (Gujarati Edition)
- ??? ????????- ??????? ????????????????? ?????
2??? ?????? ??????. ??? ?????? ????? ??????.
????? ???????????, ???? ????? ?????? ??.
3???? ?????? ?????? ????.
4?? ???? ????? ??? ????? ???
5?????? ???, ??? ???. ?????? ???? ??? ????? ????
???? ??????, ??????? ??? ?????? ???? ???? ?? ????
??.
6?????? ?????? ????????? ?? ???? ????? ??? ??? ??.
7? ????? ?? ??? ??? ???
???!
???? ??? ???.
??? ?????? ??? ??.
??????? ???.
8??? ?????????? ??? ??? ?? ???? ???? ???? ???? ??
????? ???? ??."??? ????????" ??? ? ??????? ????
??.
- ?? ??? ??? ???? ???? ?????? ?? ? ????? ???????,
- ?? ???? ??? ???? ???? ????? ???? ????.
- ????? ????? ??? ??? ?????? ??? ??? ??????????
??? ???? ??? ????????? ??? ????
???? ????? ????? ???? ???????? ??? ??? ????? ????
?????????? ????? ???? ???. ?? ??? ??? ????? ????
??? ????
9??? ???? ???? ??? ????? ??.??? ???? ???????,
???? ???? ??? ???? ??? ??????? ????? ???? ???.
?? ???? ????? ?? ??? ?????, ??
????? ?????? ??????? ????????? ???
Lab color space L 43.31 a
47.63 b 14.12
(???? ???? Lab ????? ??? ??.)
LCh color space L 43.31 C 49.68
h 16.05
XYZ (Yxy) color space Y 13.37 x
0.4832 y 0.3045
(? Yxy ??? ??? ?????? ????? ???? ??? ???.)
10???? ?????? ??? ???? ????.
Lab color space Lab ??? ??? (CIELAB ?????
?? ????? ??) ?????? ???? ???????? ??? ???? ????
?? ?? ???????? ??? ????? ??? ?????? ???? ???
???????? ??? ????? ??? ??. ?? ??? ??? ??? Yxy
????? ??????? ?????? ???? ??? 1976 ??? CIE ??????
??????????? ???? ??? ???? ???? ?? ??. Yxy ????
??? ????? ???? ?????? ? ???. CIELAB ??? L?
Lightness (Light / Dark) ????? ??. ??? a? ??? b?
??? chromaticity ???????????? ??. ????? 6 a?, b?
???????? ????? ??.
L 43.31 a 47.63 b 14.12
Figure 7 Part of Lab chromaticity diagram
(Lightness vs. Saturation)
11????? 8 ?? ??? ???? Lab ??? ???, (CIELAB
SPHERE)
12LCh color space LCh ??? ??? ??? Lab ???
??? ???? ? ????? ????? ??, ????? ???????
???????????? ?? ???? ?????? ???????????? ?????
??? ??. ? ??? ???, L Lightness ????? ?? ??? ????
????? Lab ?? L ????? ?? C ??? h ?? ????????
?????? ??? ???? ??? ??. C ?? ????? ??????? ????
0 ?? ??? ??????? ?? ?????? ???? ???? ??? ??. ????
??? a axis ???? ??? ??? ??????? ???????????
??????? ??? ?? ??? ????????? ?????? ??????? ???
?? 0 at a axis (???), 90 at b (????), 180
at -a (????), ??? 270 at -b (?????). ?? ????
????? ????? CIELCH ??? ?? ??????? ???? ???????
??? ??
Figure 9 Portion of a, b chromaticity diagram
of Figure-6
L 43.31 c 49.68 h 16.5
13??? ???? ????? ????? ??? ??????? ???
?????????? ?????? ?????? ??????? ??.
?????????? ?????? ????? ??????? ??. ????-????
??? ??????, ??? ??????? ???? ???? ???? ??????
?????? ??. ????? ??? ???? ????, ???? ??? ?????
???????? ???????? ?????? ??? ??? ??????? ????
???? ??. ???? ???? Lab ??? LCh ?? ????? ??
?????? ????? ??? ????? ???? ???? ???? Apple1s
color (L 43.31, a 47.63, b 14.12) Apple1
?? standard ??????, ?? ???? Apple2s color
(L47.34, a44.58, b15.16) ??????? ?? ?????
????, ?? ???? ???? ????????? ??????? ??????.
(????? ????? 11) ????? ????? ???? Lab ??? ????
???? ??? ??. ?? ????? ?? ????????? ??? ??
????? 1
A Lab color difference B LCh color
difference L 4.03
L 4.03 a -3.05
C -2.59 b
1.04 H 1.92
E 5.16 E
5.16
????? 2
14Lab ??? ??? ??? ????? ?? ?????????? ?????
????? ?????? ??? ???? ??, DEab, ??? ????? ?????
?? ?? ????? ??, ????? ???? ???? ???? ??? ??? ??.
???? ??? DEab ???? ?????? ??. DEab ??????
?????? ?????? ??????????? ?????? ??? ??.
__________________?Eab
?(?L)2(?a)2(?b)2 ???? ?????? ????
DL4.03, Da-3.05 ??? Db1.04 ????? ??????
??? ????? ?? DEab5.16 ???. ?? ????? ????? ???
????? ??? ?? LCh ??? ??? ??? ??, ????? ???
???????? ??? ??????? ??????? ??????? ???. ????
DL ?? ????? ???? ? ?? ?? Lab ??? ?????? ??.
DC-2.59 ?????-2 ?? ??? ??? ??????? ?? (?? ??)
???? ????? ??. DH (?????? ?????? ???????????)
?Hab?(?E)2-(?L)2-(?C)2 1.92, ?? ??, ??
???? ????? 12 ????, ?? ?????-2 ??? b axis ??
??? ???? ?? ??? ???? ??? ???? ??, ?? ??? ??? ???
????. "?" (??????) ????? ????? ??
__________________ ?Eab
?(?L)2(?a)2(?b)2
15LCh Color Space
16????? 13chroma ??? lightness ??? ????? ???????
???? ????? ????? ????? ?????? ??? ????, ???
???? ???? ??? ????? ????? ???? ???? ????? ?????
???? ???. ?????, Lightness Chroma ??? ??????
????? ???? ???? ????? ???????? ??????? ???????
??? ????? ???? ??????? ??, ?????? ??????? ??????
?????? (????, ??? ?????) ???? ????? ??, ????? 2
? ????? 1 ???? Pale (??????) ??????, ?? Chroma
????? ????? ?????? ?????, ?? ??? ???? ?? ????? 2
???? Pale (??????) ??.
17?? ???? ?????? ?????? ?????? ???-?????? ????? ???
??? ?? ??? ?????? ???????? ??? ??.
??????? ??????? ??? ????????
L -0.32 a -0.01
b 0.70 E 0.77
???? ??? ????????
L 0.11 a -0.06
b 0.13 E 0.18
????????? ???????? ??? ????????
L -0.08 a -0.02 b
0.13 Eab 0.15
18??? ???? ????? ???????? ???????? ?? ??????
???? ???? ???? ?? ???-???? ????? ??? ??? ?? ???
???????? ????.
19????????? ?? ? ??? ??, ???? ?? ?? ??? ????? ??.
?? ????? ???? ????? ??? ?? ????????? ??? ?? ??
????????? ??. ???-???? ???-?????? ?????? ????, ??
?????? ?????? ?? ??? ?? ?????? ?.
??? ????????? ???????? ??? ??? ????? ??.
?????? ?????, ?? ? ??? ??? ??? ?????? ??????
???? ??? ????? ?? ??? ????? ?????? ??? ??.
20????? ?????? ??? ???? ????? ??, ???? ?? ??? ???
??.
- ?????? ??????? ??????
- ????? ??? ?????????? ??????
- ????? ????? ??????
- ???????? ???? ???? ?????? ?????? ?????
- ?????????? ??? ???????? ????????
- ?? ?????? (????? ??????)
- ?????????-??????
- ???????? ???????? ??????
????? ???? ???? ?????? ??? ????????? ????? ?????
???????? ??.
21?????????????????? ? ??????? ??????? ??? ?????
????? ??.
?????? ????? ???? ?????? ????? ??? ????
?????????? ??
?????? ???????????? ?????? ????? ?????? ??????
???? ?????? ?? ??????? ?????? ??????? ????
spectrophotometer ?????? ????????? ??? ???? ??..
?????????????????? ????? ?????? ?? Features ???
???????? ?????? ???? ???????? ???????? ????
?????? ??? ??? ?? ??? ???? ???? ????????? ???? ??
????? ??. ?????????????????? ????? ???????????
??????? ?? ???? ???????? ??????
?????????????????? ? ??? ??????? ??????? ?? ???
??? ??, ?? ???? ??????????????? ???-???? ?????
????? ? ???. ?????????????????? ?? ???? ??? ???
???? ??? ?? ??? ????????, ?????,
????????????????. ? ??? ???? ??????? ??? ??
??????????, ??? ????? ?????? ??? ??????? ???
??????? ????? ??? ??. lt ??? ???? ?? ?????
?????? ??? ?????? gt
????????? ????????? ??????? ??? CIE Illuminants
??????, ??? ????? ????????? ???? ???? ????? ?????
??? ??????? ???????? ????? ??? ???? ??
?????????? ??????????? ????? ??????? ??? ???????
??? ??????????? ????? ?????? ????????? ??? ????
??.
?????? ?????? ?????? ?????? ???????????, ?? ???
???? ????? ???? ???????, ??? ??? ??. ??? ??????
???? ??????, ???? ????? ?????????? CIE
-??????????? ????????? ????????? ???? ?????????
???????? ??????????? ????? ??
????????? ??? ?? ?????? ???? ??? ???? ???,
spectrophotometers ???? ????? ???. ???? ???? ??
????? ????? ????, ????? ?????? ???? ??? ??? ???
???? ??
??? ????? ?????????-??? ????? ??? ????????? ????
?? ??? ??? ? ?????? ???? ????????? ???? ??????
????????? ??? ???? ??
? ???? Konica Minolta ?????????????????? CM-700d
??? CM-2500d ????? ??
????? ?????? / ?????? ??? ??? / ?????? ??????
CIE ???? ???? ??????????? ???? ??????? ??. ????
???? ???? ???? ???? ????? ????? ??.
?????????? ??????? ????????? ????????? ??????
????????? ?? ?????? ??? ?? ? ????????? ????
????????? ?????? ?? ???? ???????? ?????? ???? ??.
??? ??? ???? ?????? ??????????? ????????? ???
???? ????? ????? Yxy ???? ??????, ?? ? ?? ??,
????? ???, ????? ??.
22- PRECISE COLOR COMMUNICATION
- ?????? COLOR ????????????
- (Gujarati Edition)
- ??? ????????- ??????? ????????????????? ?????
- Thanks.
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