Question

Which one of the following image processing methods employs standard deviation?

• A. Band ratio
• B. Parallelepiped classification
• C. Correction of skew distortion in raw satellite image
• D. Nearest neighbor classification

Hint:

Standard deviation is used in parallelepiped classification to define class boundaries in multispectral space.

Answer 1

The Correct Option is B

Parallelepiped classification is a supervised classification method that uses the mean and standard deviation of each class in each band to define decision boundaries. A pixel is classified if it falls within a predefined "box" defined by the mean ± standard deviation.