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DTV Color Rendition Test Chart
The DTV Color Rendition Test Chart is disigned and used to evaluate the
color rendition of HDTV cameras. The chart consists of 36 color patches
and a 9-step gray scale. In addition to the primary and secondary
colors the test chart contains mainly the colors, which are critical in
reproduction, e.g. dark and light skin tones, foliage, blue sky,
orange, violet and others.
The
chart consists of 36 color patches and 9-step gray scale. Besides the
primary and secondary colors (blue, green, red, yellow, purple and
cyan) the test chart contains mainly colors, which are critical in
reproduction, e.g. dark and light skin tones, foliage, blue sky,
orange, violet and others.
The
colorimetric reports of the 36 colors are shown on the following page.
The
9-step gray scale is graduated as follows:
Step |
Density |
Transmission
in % |
1 |
0.00 |
100 |
|
|
|
2 |
0.06 |
88 |
|
|
|
3 |
0.20 |
63 |
|
|
|
4 |
0.36 |
44 |
|
|
|
5 |
0.55 |
28 |
|
|
|
6 |
0.81 |
16 |
|
|
|
7 |
1.15 |
7 |
|
|
|
8 |
1.65 |
2 |
|
|
|
9 |
>
3.00 |
0 |
|
|
|
The density is based on the 1st step of
the gray scale.
Date
Some
of the filter foils used are not fade less, especially when exposed to
sunlight (ultra violet light). We therefore recommend to store the
chart in the folder or case when not in use. We also recommend and
offer a recalibration of the chart after 3 years of regular use.
Colorimetric
data – transparency standard illuminant D65
No. |
Color |
X |
Y |
Z |
U´ |
V` |
X |
Y |
Z |
CB |
CR |
1 |
Dark
skin |
0,126 |
0,116 |
0,060 |
0,250 |
0,510 |
0,420 |
0,390 |
68,000 |
-16,400 |
18,000 |
2 |
Light
skin |
0,438 |
0,401 |
0,301 |
0,240 |
0,490 |
0,380 |
0,350 |
136,100 |
-14,400 |
26,700 |
3 |
Blue
sky |
0,175 |
0,198 |
0,312 |
0,170 |
0,440 |
0,260 |
0,290 |
93,400 |
13,600 |
-17,700 |
4 |
Foliage |
0,072 |
0,123 |
0,020 |
0,150 |
0,560 |
0,340 |
0,580 |
66,800 |
-38,300 |
-23,200 |
5 |
Blue
flower |
0,352 |
0,334 |
0,565 |
0,200 |
0,430 |
0,280 |
0,270 |
124,900 |
20,400 |
1,800 |
6 |
Bluish
green |
0,307 |
0,419 |
0,438 |
0,150 |
0,480 |
0,260 |
0,360 |
137,100 |
-0,140 |
-40,100 |
7 |
Orange |
0,410 |
0,337 |
0,046 |
0,290 |
0,540 |
0,520 |
0,420 |
116,100 |
-62,500 |
50,900 |
8 |
Purplish
blue |
0,180 |
0,188 |
0,550 |
0,150 |
0,360 |
0,200 |
0,200 |
84,000 |
43,400 |
-41,600 |
9 |
Moderate
red |
0,292 |
0,210 |
0,134 |
0,310 |
0,490 |
0,460 |
0,320 |
88,000 |
-10,100 |
49,300 |
10 |
Purple |
0,121 |
0,075 |
0,378 |
0,200 |
0,280 |
0,210 |
0,130 |
46,900 |
49,100 |
8,100 |
11 |
Yellow
green |
0,458 |
0,615 |
0,261 |
0,170 |
0,530 |
0,340 |
0,460 |
169,000 |
-44,400 |
-19,500 |
12 |
Orange
yellow |
0,538 |
0,485 |
0,084 |
0,270 |
0,540 |
0,490 |
0,440 |
144,400 |
-68,900 |
45,200 |
13 |
blue
flower |
0,099 |
0,048 |
0,550 |
0,160 |
0,180 |
0,140 |
0,070 |
18,400 |
81,400 |
-29,400 |
14 |
Green |
0,103 |
0,224 |
0,050 |
0,110 |
0,560 |
0,270 |
0,590 |
81,300 |
-38,800 |
-74,900 |
15 |
Red |
0,316 |
0,160 |
0,003 |
0,460 |
0,530 |
0,660 |
0,330 |
35,500 |
-25,700 |
102,500 |
16 |
Yellow |
0,508 |
0,581 |
0,033 |
0,220 |
0,560 |
0,450 |
0,520 |
157,200 |
-116,900 |
20,300 |
17 |
Magenta |
0,429 |
0,222 |
0,560 |
0,320 |
0,370 |
0,350 |
0,180 |
69,100 |
52,900 |
80,100 |
18 |
Cyan |
0,481 |
0,586 |
0,940 |
0,160 |
0,440 |
0,240 |
0,290 |
163,000 |
24,800 |
-46,100 |
19 |
|
0,253 |
0,246 |
0,140 |
0,230 |
0,510 |
0,400 |
0,380 |
104,900 |
-20,400 |
18,100 |
20 |
|
0,631 |
0,600 |
0,498 |
0,230 |
0,490 |
0,360 |
0,350 |
168,200 |
-13,200 |
24,000 |
21 |
|
0,348 |
0,330 |
0,244 |
0,230 |
0,490 |
0,380 |
0,360 |
123,500 |
-14,400 |
19,900 |
22 |
|
0,132 |
0,301 |
0,070 |
0,110 |
0,560 |
0,260 |
0,590 |
90,200 |
-39,200 |
-103,400 |
23 |
|
0,348 |
0,438 |
0,553 |
0,160 |
0,460 |
0,260 |
0,330 |
141,600 |
8,400 |
-34,000 |
24 |
|
0,512 |
0,515 |
0,783 |
0,190 |
0,440 |
0,280 |
0,280 |
156,500 |
18,600 |
-3,900 |
25 |
|
0,334 |
0,208 |
0,020 |
0,380 |
0,530 |
0,590 |
0,370 |
75,700 |
-43,100 |
74,200 |
26 |
|
0,401 |
0,550 |
0,438 |
0,160 |
0,500 |
0,290 |
0,400 |
159,200 |
-14,500 |
-35,700 |
27 |
|
0,158 |
0,151 |
0,563 |
0,150 |
0,330 |
0,180 |
0,170 |
70,600 |
52,400 |
-45,600 |
28 |
|
0,132 |
0,095 |
0,116 |
0,280 |
0,450 |
0,380 |
0,280 |
57,700 |
5,500 |
28,100 |
29 |
|
0,215 |
0,415 |
0,454 |
0,110 |
0,480 |
0,200 |
0,380 |
95,100 |
24,100 |
-168,900 |
30 |
|
0,150 |
0,078 |
0,611 |
0,190 |
0,220 |
0,180 |
0,090 |
40,300 |
74,200 |
4,000 |
31 |
|
0,279 |
0,135 |
0,146 |
0,410 |
0,440 |
0,500 |
0,240 |
34,300 |
24,300 |
90,300 |
32 |
|
0,793 |
0,847 |
0,500 |
0,210 |
0,510 |
0,370 |
0,400 |
200,600 |
-34,900 |
13,500 |
33 |
|
0,135 |
0,161 |
0,434 |
0,140 |
0,380 |
0,190 |
0,220 |
70,700 |
40,100 |
-62,100 |
34 |
|
0,014 |
0,074 |
0,060 |
0,050 |
0,510 |
0,100 |
0,490 |
35,300 |
2,800 |
-84,000 |
35 |
|
0,626 |
0,540 |
0,232 |
0,270 |
0,520 |
0,450 |
0,390 |
155,100 |
-37,600 |
47,100 |
36 |
|
0,410 |
0,436 |
0,288 |
0,210 |
0,500 |
0,360 |
0,380 |
143,400 |
-21,300 |
8,900 |
All
values calculated from the colorimetric measurement results (CIE-XYZ
values) for the ITU Rec. 709. The brightness is related to the picture
white of patch 37 (=100% transmission).
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