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LOGARITHMIC GRAY SCALE TEST CHART 16:9

Shenzhen ThreeNH Technology Co.,Ltd
    Buy cheap LOGARITHMIC GRAY SCALE TEST CHART 16:9 from wholesalers
     
    Buy cheap LOGARITHMIC GRAY SCALE TEST CHART 16:9 from wholesalers
    • Buy cheap LOGARITHMIC GRAY SCALE TEST CHART 16:9 from wholesalers

    LOGARITHMIC GRAY SCALE TEST CHART 16:9

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    Brand Name : Sine Image/ESSER
    Model Number : YE127/TE127
    Certification : ISO9001
    Payment Terms : T/T
    Supply Ability : 1000 pcs per month
    Delivery Time : 3 work days
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    LOGARITHMIC GRAY SCALE TEST CHART 16:9

    LOGARITHMIC GRAY SCALE TEST CHART 16:9


    REFLECTANCE


    Two 9-graduated counter current gray scales are arranged on a gray background (D=0.75), the

    gray scales being graduated logarithmically.


    Related to the densities of the gray scales: gamma = 0.45


    Related to the reflection values (brightness): gamma = 2.2, that being exactly the reciprocal value

    of gamma=0.45.


    The output of an optimally gamma-corrected camera yields two 9-graduated counter current linear

    step signals. The contrast range of the gray scales is 56:1.


    The values of the 9-graduated gray scales are as follows:

    StepDensityReflectance in %Output signal in %
    10.1571100
    20.265588.75
    30.374277.5
    40.513166.25
    50.672255
    60.851443.75
    71.09832.5
    81.39421.25
    91.851.410

    The density values are based on a density of BaSO4 = 0. Two black fields and a white field

    are located between the gray scales. The density of the black field is D > 2.4 (reflectance < 0.5 %).

    The density of the white field is D = 0.05 (reflectance = 90%)

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