Discussion
Which of the following correctional procedure in digital image is required for "Line dropouts".
Answer: B
Line dropouts need radiometric correction.
A line dropout occurs when a detector in a scanning sensor fails, so a scan line in the image is blank or has wrong brightness values. Because the error is in the recorded values, not in the position of pixels, it is corrected radiometrically, usually by replacing the line with the average of the lines above and below.
Geometric correction fixes distortions of position and scale, atmospheric correction removes haze and scattering, and image enhancement improves appearance for interpretation rather than correcting sensor errors.
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