Question

Which atmospheric correction method is most useful for easy detection of haze from the images and why?
(a.) Spectral Information based correction; AOT bands can easily be obtained
(b.) Temporal Information based correction; comparison between multi-temporal images
(c.) Angular Information based correction; Multiple angles of observation
(d.) Spatial Information based correction; spatial matching of clear and hazy regions of an image

Answer 1

"Spatial information" based correction; spatial matching of clear and hazy regions of an image during atmospheric correction is used to detect haze from the image.

Answer - (Option D)

Explanation:

• The spatial resolution provides the fineness of visible detail in an image through high and low resolutions.
• Factors like atmosphere, cloud, haze, smoke, blurred particles affect spatial resolution.
• At around 0.52-0.72 µm of visible wavelength range, spatial resolution can detect cloud, haze, pollution, and storms.
• The field of view, sensor’s altitude and viewing angle determines the 'spatial resolution'.