camera test
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MTF
• Choose a area • Calculate the mean of the chosen area • Use this mean as a threshold to tell apart white and black pixels. • For white pixels group, calculate its mean as H • For black pixels group, calculate its mean as L • Apply MTF to get the degree of clarity.
MTF
• MTF: Modulation Transfer Function
– A method to measure the degree of clarity.
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QRI/Org. 3 Internal Use Only 1
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QRI/Org. 3 Internal Use Only 3
Color Fidelity
• Determine a set of colors as reference • Covert color space to CIELab • Calculate the difference between reference and captured colors by Cab76
H L MTF H L
Proprietary Information - Confidential QRI/Org. 3 Internal Use Only 2
Color Fidelity
• Color Fidelity:
– A value to measure the ability of color reproduction.
Cab 76 (a1 a2 ) 2 (b1 b2 ) 2
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QRI/Org. 3 Internal Use Only 4
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