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

  • Calibration Resolution Test Chart 0.45 gamma Designed To Color Align Hd Cameras
Place of Origin Shenzhen, China
Brand Name SineImage
Certification CE&RoHS&TUV&FCC&ISO9001
Model Number COLOR CAMERA GRAY SCALE TEST CHART
Minimum Order Quantity 1pc
Packaging Details Standard Export Package
Delivery Time within 3-5 working days after payment confirmed
Payment Terms T/T,Paypal
Supply Ability 1000pcs/month

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Product Details
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
High Light

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Product Description

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.

 

field 1 2 3 4 5 6 7 8 9 10 11 BG
density 0.05 0.14 0.23 0.33 0.45 0.58 0.73 0.91 1.14 1.43 1.85 0.62

Reference density values of the gray scale

Calibration Resolution Test Chart 0.45 gamma Designed To Color Align Hd Cameras 0

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.

 

 

    L a b X Y Z R'709 G'709 B'709 Y'709 C'B709 C'R709
Upper row Y 84.54 -15.01 48.18 0.59 0.65 0.25 0.88 0.81 0.38 191 78 140
C 56.09 31.23 38.03 0.32 0.24 0.08 0.79 0.36 0.20 112 99 178
G 69.76 -32.54 43.76 0.31 0.40 0.14 0.54 0.68 0.26 152 85 117
M 69.18 -24.81 -11.15 0.32 0.40 0.49 0.42 0.67 0.67 151 135 100
R 57.31 26.01 27.38 0.32 0.25 0.12 0.77 0.39 0.28 118 106 171
B 63.64 -9.15 -28.86 0.30 0.32 0.57 0.41 0.58 0.75 138 151 108
Skin tones Skin 1 70.45 -38.85 24.55 0.30 0.41 0.24 0.44 0.70 0.42 154 103 102
Skin 2 3.95 0.31 -1.21 0.01 0.01 0.01 0.01 0.00 0.00 17 128 129
Skin 3 94.02 -0.86 -3.49 0.85 0.85 0.9 0.99 0.90 0.91 218 126 138
Skin 4 61,95 35.55 0.51 0.41 0.30 0.30 0.85 0.41 0.52 128 129 175
Lower row yellow 29.43 51.23 33 0.12 0.06 0.01 0.53 0.00 0.02 41 116 188
blue 57.96 20.8 19.35 0.31 0.26 0.16 0.73 0.42 0.34 121 111 164
green 29.62 42.15 42.67 0.11 0.06 0.01 0.50 0.03 0.00 44 113 180
pink 19.71 41.41 -66.68 0.06 0.03 0.26 0.08 0.03 0.52 32 182 129
red 31.15 18.03 26.22 0.09 0.07 0.02 0.39 0.17 0.06 61 110 154
magenta 33.11 45.2 -51.37 0.14 0.14 0.31 0.39 0.11 0.56 60 172 155

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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Contact Information:

 

Contact Person: Clara Liu;

Email: L001@3nh.com;

Wechat & Whatsapp ID: +8613510310267;

Skype: clara.3nh

 

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