顏色的產(chǎn)生離不開光源和人，三刺激值是一種表示人體對顏色的感覺刺激程度，那么d65光源三刺激值是多少，今天小編就給大家科普一下光源的三刺激值。
什么是三刺激值？
三刺激值是引起人體視網(wǎng)膜對某種顏色感覺的三種原色的刺激程度之量的表示。
三色系統(tǒng)中，與待測光達(dá)到顏色匹配所需的三種原色刺激的量。
用X（紅原色刺激量）、Y（綠原色刺激量）和Z（藍(lán)原色刺激量）表示。
根據(jù)楊-亥姆霍茲的三原色理論，色的感覺是由于三種原色光刺激的綜合結(jié)果。在紅、綠，藍(lán)三原色系統(tǒng)中，紅。綠、藍(lán)的刺激量分別以R、G、B表示之。由于從實(shí)際光譜中選定的紅、綠、藍(lán)三原色光不可能調(diào)(匹)配出存在于自然界的所有色彩，所以，CIE于1931年從理論上假設(shè)了并不存在于自然界的三種原色，即理論三原色，以X，Y，Z表示，以期從理論上來調(diào)(匹)配一切色彩。
D65光源三刺激值怎么算？
光譜儀可以測出RGB的光譜分布
然后將光譜分布加權(quán)對應(yīng)波長的標(biāo)準(zhǔn)光譜三刺激值（常數(shù)）就是對應(yīng)的RGB光譜三刺激值。
三刺激值可通過下列測定而計(jì)算之：
1.物體在可見光譜中正常間隔情況下的反射率(或透射率)，并乘以這些量度；
2.理論照度中同樣波長的相應(yīng)能量；
3.同樣波長的每一個(gè)的三色調(diào)(匹)配函數(shù)；
4.每三套產(chǎn)物的總和，以這種方法得到的三刺激值叫重量縱坐標(biāo)法。測定三刺激值的方法還有一種叫選擇縱坐標(biāo)法，即在特別選擇的波長條件下測定反射(或透射)率的方法。
CIE色度學(xué)除V（λ）函數(shù)，X（λ）和Z（λ）函數(shù)，協(xié)調(diào)光譜中紅色，綠色和藍(lán)色的平均值，γ（λ）函數(shù)定義Y（λ），三函數(shù)如下，這些函數(shù)線下的面積是相等的，因此，X、Y和Z對色刺激SE等于光譜功率值/一定波長間隔（等能刺激）。
d65光譜表：
|
l,?mn |
Standard Illuminant A |
Standard Illuminant D65 |
Illuminant C |
Illuminant D50 |
Illuminant D55 |
Illuminant D75 |
|
300 |
0,930 483 |
0,034 100 0 |
0,00 |
0,019 |
0,024 |
0,043 |
|
305 |
1,128 21 |
1,664 30 |
0,00 |
1,035 |
1,048 |
2,588 |
|
310 |
1,357 69 |
3,294 50 |
0,00 |
2,051 |
2,072 |
5,133 |
|
315 |
1,622 19 |
11,765 2 |
0,00 |
4,914 |
6,648 |
17,470 |
|
320 |
1,925 08 |
20,236 0 |
0,01 |
7,778 |
11,224 |
29,808 |
|
325 |
2,269 80 |
28,644 7 |
0,20 |
11,263 |
15,936 |
42,369 |
|
330 |
2,659 81 |
37,053 5 |
0,40 |
14,748 |
20,647 |
54,930 |
|
335 |
3,098 61 |
38,501 1 |
1,55 |
16,348 |
22,266 |
56,095 |
|
340 |
3,589 68 |
39,948 8 |
2,70 |
17,948 |
23,885 |
57,259 |
|
345 |
4,136 48 |
42,430 2 |
4,85 |
19,479 |
25,851 |
60,000 |
|
350 |
4,742 38 |
44,911 7 |
7,00 |
21,010 |
27,817 |
62,740 |
|
355 |
5,410 70 |
45,775 0 |
9,95 |
22,476 |
29,219 |
62,861 |
|
360 |
6,144 62 |
46,638 3 |
12,90 |
23,942 |
30,621 |
62,982 |
|
365 |
6,947 20 |
49,363 7 |
17,20 |
25,451 |
32,464 |
66,647 |
|
370 |
7,821 35 |
52,089 1 |
21,40 |
26,961 |
34,308 |
70,312 |
|
375 |
8,769 80 |
51,032 3 |
27,50 |
25,724 |
33,446 |
68,507 |
|
380 |
9,795 10 |
49,975 5 |
33,00 |
24,488 |
32,584 |
66,703 |
|
385 |
10,899 6 |
52,311 8 |
39,92 |
27,179 |
35,335 |
68,333 |
|
390 |
12,085 3 |
54,648 2 |
47,40 |
29,871 |
38,087 |
69,963 |
|
395 |
13,354 3 |
68,701 5 |
55,17 |
39,589 |
49,518 |
85,946 |
|
400 |
14,708 0 |
82,754 9 |
63,30 |
49,308 |
60,949 |
101,929 |
|
405 |
16,148 0 |
87,120 4 |
71,81 |
52,910 |
64,751 |
106,911 |
|
410 |
17,675 3 |
91,486 0 |
80,60 |
56,513 |
68,554 |
111,894 |
|
415 |
19,290 7 |
92,458 9 |
89,53 |
58,273 |
70,065 |
112,346 |
|
420 |
20,995 0 |
93,431 8 |
98,10 |
60,034 |
71,577 |
112,798 |
|
425 |
22,788 3 |
90,057 0 |
105,80 |
58,926 |
69,746 |
107,945 |
|
430 |
24,670 9 |
86,682 3 |
112,40 |
57,818 |
67,914 |
103,092 |
|
435 |
26,642 5 |
95,773 6 |
117,75 |
66,321 |
76,760 |
112,145 |
|
440 |
28,702 7 |
104,865 |
121,50 |
74,825 |
85,605 |
121,198 |
|
445 |
30,850 8 |
110,936 |
123,45 |
81,036 |
91,799 |
127,104 |
|
450 |
33,085 9 |
117,008 |
124,00 |
87,247 |
97,993 |
133,010 |
|
455 |
35,406 8 |
117,410 |
123,60 |
88,930 |
99,228 |
132,682 |
|
460 |
37,812 1 |
117,812 |
123,10 |
90,612 |
100,463 |
132,355 |
|
465 |
40,300 2 |
116,336 |
123,30 |
90,990 |
100,188 |
129,838 |
|
470 |
42,869 3 |
114,861 |
123,80 |
91,368 |
99,913 |
127,322 |
|
475 |
45,517 4 |
115,392 |
124,09 |
93,238 |
101,326 |
127,061 |
|
480 |
48,242 3 |
115,923 |
123,90 |
95,109 |
102,739 |
126,800 |
|
485 |
51,041 8 |
112,367 |
122,92 |
93,536 |
100,409 |
122,291 |
|
490 |
53,913 2 |
108,811 |
120,70 |
91,963 |
98,078 |
117,783 |
|
495 |
56,853 9 |
109,082 |
116,90 |
93,843 |
99,379 |
117,186 |
|
500 |
59,861 1 |
109,354 |
112,10 |
95,724 |
100,680 |
116,589 |
|
505 |
62,932 0 |
108,578 |
106,98 |
96,169 |
100,688 |
115,146 |
|
510 |
66,063 5 |
107,802 |
102,30 |
96,613 |
100,695 |
113,702 |
|
515 |
69,252 5 |
106,296 |
98,81 |
96,871 |
100,341 |
111,181 |
|
520 |
72,495 9 |
104,790 |
96,90 |
97,129 |
99,987 |
108,659 |
|
525 |
75,790 3 |
106,239 |
96,78 |
99,614 |
102,098 |
109,552 |
|
530 |
79,132 6 |
107,689 |
98,00 |
102,099 |
104,210 |
110,445 |
|
535 |
82,519 3 |
106,047 |
99,94 |
101,427 |
103,156 |
108,367 |
|
540 |
85,947 0 |
104,405 |
102,10 |
100,755 |
102,102 |
106,289 |
|
545 |
89,412 4 |
104,225 |
103,95 |
101,536 |
102,535 |
105,596 |
|
550 |
92,912 0 |
104,046 |
105,20 |
102,317 |
102,968 |
104,904 |
|
555 |
96,442 3 |
102,023 |
105,67 |
101,159 |
101,484 |
102,452 |
|
560 |
100,000 |
100,000 |
105,30 |
100,000 |
100,000 |
100,000 |
|
565 |
103,582 |
98,167 1 |
104,11 |
98,868 |
98,608 |
97,808 |
|
570 |
107,184 |
96,334 2 |
102,30 |
97,735 |
97,216 |
95,616 |
|
575 |
110,803 |
96,061 1 |
100,15 |
98,327 |
97,482 |
94,914 |
|
580 |
114,436 |
95,788 0 |
97,80 |
98,918 |
97,749 |
94,213 |
|
585 |
118,080 |
92,236 8 |
95,43 |
96,208 |
94,590 |
90,605 |
|
590 |
121,731 |
88,685 6 |
93,20 |
93,499 |
91,432 |
86,997 |
|
595 |
125,386 |
89,345 9 |
91,22 |
95,593 |
92,926 |
87,112 |
|
600 |
129,043 |
90,006 2 |
89,70 |
97,688 |
94,419 |
87,227 |
|
605 |
132,697 |
89,802 6 |
88,83 |
98,478 |
94,780 |
86,684 |
|
610 |
136,346 |
89,599 1 |
88,40 |
99,269 |
95,140 |
86,140 |
|
615 |
139,988 |
88,648 9 |
88,19 |
99,155 |
94,680 |
84,861 |
|
620 |
143,618 |
87,698 7 |
88,10 |
99,042 |
94,220 |
83,581 |
|
625 |
147,235 |
85,493 6 |
88,06 |
97,382 |
92,334 |
81,164 |
|
630 |
150,836 |
83,288 6 |
88,00 |
95,722 |
90,448 |
78,747 |
|
635 |
154,418 |
83,493 9 |
87,86 |
97,290 |
91,389 |
78,587 |
|
640 |
157,979 |
83,699 2 |
87,80 |
98,857 |
92,330 |
78,428 |
|
645 |
161,516 |
81,863 0 |
87,99 |
97,262 |
90,592 |
76,614 |
|
650 |
165,028 |
80,026 8 |
88,20 |
95,667 |
88,854 |
74,801 |
|
655 |
168,510 |
80,120 7 |
88,20 |
96,929 |
89,586 |
74,562 |
|
660 |
171,963 |
80,214 6 |
87,90 |
98,190 |
90,317 |
74,324 |
|
665 |
175,383 |
81,246 2 |
87,22 |
100,597 |
92,133 |
74,873 |
|
670 |
178,769 |
82,277 8 |
86,30 |
103,003 |
93,950 |
75,422 |
|
675 |
182,118 |
80,281 0 |
85,30 |
101,068 |
91,953 |
73,499 |
|
680 |
185,429 |
78,284 2 |
84,00 |
99,133 |
89,956 |
71,576 |
|
685 |
188,701 |
74,002 7 |
82,21 |
93,257 |
84,817 |
67,714 |
|
690 |
191,931 |
69,721 3 |
80,20 |
87,381 |
79,677 |
63,852 |
|
695 |
195,118 |
70,665 2 |
78,24 |
89,492 |
81,258 |
64,464 |
|
700 |
198,261 |
71,609 1 |
76,30 |
91,604 |
82,840 |
65,076 |
|
705 |
201,359 |
72,979 0 |
74,36 |
92,246 |
83,842 |
66,573 |
|
710 |
204,409 |
74,349 0 |
72,40 |
92,889 |
84,844 |
68,070 |
|
715 |
207,411 |
67,976 5 |
70,40 |
84,872 |
77,539 |
62,256 |
|
720 |
210,365 |
61,604 0 |
68,30 |
76,854 |
70,235 |
56,443 |
|
725 |
213,268 |
65,744 8 |
66,30 |
81,683 |
74,768 |
60,343 |
|
730 |
216,120 |
69,885 6 |
64,40 |
86,511 |
79,301 |
64,242 |
|
735 |
218,920 |
72,486 3 |
62,80 |
89,546 |
82,147 |
66,697 |
|
740 |
221,667 |
75,087 0 |
61,50 |
92,580 |
84,993 |
69,151 |
|
745 |
224,361 |
69,339 8 |
60,20 |
85,405 |
78,437 |
63,890 |
|
750 |
227,000 |
63,592 7 |
59,20 |
78,230 |
71,880 |
58,629 |
|
755 |
229,585 |
55,005 4 |
58,50 |
67,961 |
62,337 |
50,623 |
|
760 |
232,115 |
46,418 2 |
58,10 |
57,692 |
52,793 |
42,617 |
|
765 |
234,589 |
56,611 8 |
58,00 |
70,307 |
64,360 |
51,985 |
|
770 |
237,008 |
66,805 4 |
58,20 |
82,923 |
75,927 |
61,352 |
|
775 |
239,370 |
65,094 1 |
58,50 |
80,599 |
73,872 |
59,838 |
|
780 |
241,675 |
63,382 8 |
59,10 |
78,274 |
71,818 |
58,324 ? |
以上就是小編搜集整理的d65光源三刺激值相關(guān)內(nèi)容，想了解更多光源知識(shí)的朋友，可以繼續(xù)關(guān)注我們的后續(xù)更新！