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Calibration Resolution Test Chart 0.45 gamma Designed To Color Align Hd Cameras

Categories Resolution Test Chart
Brand Name: SineImage
Model Number: COLOR CAMERA GRAY SCALE TEST CHART
Certification: CE&RoHS&TUV&FCC&ISO9001
Place of Origin: Shenzhen, China
MOQ: 1pc
Payment Terms: T/T,Paypal
Supply Ability: 1000pcs/month
Delivery Time: within 3-5 working days after payment confirmed
Packaging Details: Standard Export Package
Brand: 3nh
gray background: D≈0.62, remission=24%
Standard: HDTV standard ITU-R BT.709
Model: TE256
circular lines: 400, 600 and 1200 lines
gamma: 0.45
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Calibration Resolution Test Chart 0.45 gamma Designed To Color Align Hd Cameras

Designed to Color Align HD Cameras COLOR AND CALIBRATION TEST CHART

The TE256 is designed to color align HD cameras.


Two 11-graduated counter current gray scales are arranged on a gray background (D≈0.62, remission=24%), the gray scale being graduated logarithmically. Related to the densities of the gray scales: gamma = 0.45, related to the remission values (brightness): gamma = 2.2, that being exactly the reciprocal value of 0.45. The gamma factor 0.45 applies to remission > 1.8% (brightest step 100%). Between 0 and 1.8% the gamma function shows a linear progression (with the factor 4.5). The darkest step is in this area. The gamma function corresponds to Rec. 709. The output of an optimally gamma-corrected camera yields two 11- graduated counter current linear step signals (see figure below). The dynamic range of the gray scales is 63:1.


field1234567891011BG
density0.050.140.230.330.450.580.730.911.141.431.850.62

Reference density values of the gray scale

two 11-graduated counter current linear step signals without color signals


The six color patches of the upper line represent the three primary colors red (R), green (G) and blue (B) as well as the three secondary colors cyan (C), magenta (M) and yellow (Y) according to the HDTV standard ITU-R BT.709 . Since it is impossible to depict the 100% saturated colors on a reflectance chart, the saturation is reduced to the maximum color space of the printer.


The six color patches of the lower line (yellow/green, blue, green, pink, red, magenta) represent the colors between the primary colors.


In addition to the gray scales and color patches for patches with skin tones are located.


LabXYZR'709G'709B'709Y'709C'B709C'R709
Upper rowY84.54-15.0148.180.590.650.250.880.810.3819178140
C56.0931.2338.030.320.240.080.790.360.2011299178
G69.76-32.5443.760.310.400.140.540.680.2615285117
M69.18-24.81-11.150.320.400.490.420.670.67151135100
R57.3126.0127.380.320.250.120.770.390.28118106171
B63.64-9.15-28.860.300.320.570.410.580.75138151108
Skin tonesSkin 170.45-38.8524.550.300.410.240.440.700.42154103102
Skin 23.950.31-1.210.010.010.010.010.000.0017128129
Skin 394.02-0.86-3.490.850.850.90.990.900.91218126138
Skin 461,9535.550.510.410.300.300.850.410.52128129175
Lower rowyellow29.4351.23330.120.060.010.530.000.0241116188
blue57.9620.819.350.310.260.160.730.420.34121111164
green29.6242.1542.670.110.060.010.500.030.0044113180
pink19.7141.41-66.680.060.030.260.080.030.5232182129
red31.1518.0326.220.090.070.020.390.170.0661110154
magenta33.1145.2-51.370.140.140.310.390.110.5660172155

Reference Lab and RGB data of the 12 color patches and four skin tone patches


Horizontal and vertical resolution wedges are positioned in circles in the four corners of the test chart. Scaling lines are shown at the outer circular lines (400, 600 and 1200 lines). In addition, cross-color interferences as well as the effects of notch filters and comb filters can be observed.


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About Us:

Contact Information:


Contact Person: Clara Liu;

Email: L001@3nh.com;

Wechat & Whatsapp ID: +8613510310267;

Skype: clara.3nh


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