Question

In Dark target method of atmospheric correction, the dark pixels are ______________ from/to/in each band of the image.
(a.) Added
(b.) Subtracted
(c.) Nullified
(d.) None of the above

Answer 1

Answer:

added.. hope it useful...!!!!

Answer 2

Answer:

The dark pixels are subtracted from/to/in each band of the image in Dark target method of atmospheric correction.

Explanation:

Dark object target subtraction is one among the method in atmospheric correction wherein the path radiance is obtained by subtracting the gray value of the dark object pixels from the gray value of other pixels in the image.

This requires an in-scene black target in each band. There are three methods to perform this as:

• Histogram Minimum Method (HMM)  
• Regression Intersection Method (RIM)
• Co-variance Matrix Method (CMM)