Information processing device, information processing method and program storage medium

An information processing method comprising:

• by a processor,
• extracting a luminance that satisfies a preset rule from among luminance of being observed values of electromagnetic waves in a plurality of wavelength bands different mutually and calculating a first interim optical path radiance based on the luminance, the observed values being associated with each pixel constituting an observation image for each of the wavelength bands, the observation image being acquired by observing the electromagnetic waves which pass through an atmosphere;
• calculating a second interim optical path radiance that includes information on a state of the atmosphere;
• calculating a final optical path radiance for each of the wavelength bands by weighting the first interim optical path radiance and the second interim optical path radiance with a weighting coefficient and adding the weighted first interim optical path radiance and the weighted second interim optical path radiance, the weighting coefficient representing reliability for an assumption of a dark pixel that is a pixel assumed not to be affected by electromagnetic waves reflected by an object in pixels of the observation image;
• and
• subtracting the final optical path radiance from all pixels of the observation image for each of the wavelength bands.

A non-transitory program storage medium storing a computer program representing a processing procedure that causes a computer to execute:

• extracting a luminance that satisfies a preset rule from among luminance of being observed values of electromagnetic waves in a plurality of wavelength bands different mutually and calculating a first interim optical path radiance based on the luminance, the observed values being associated with each pixel constituting an observation image for each of the wavelength bands, the observation image being acquired by observing the electromagnetic waves which pass through an atmosphere;
• calculating a second interim optical path radiance that includes information on a state of the atmosphere;
• a final optical path radiance for each of the wavelength bands by weighting the first interim optical path radiance and the second interim optical path radiance with a weighting coefficient and adding the weighted first interim optical path radiance and the weighted second interim optical path radiance, the weighting coefficient representing reliability for an assumption of a dark pixel that is a pixel assumed not to be affected by electromagnetic waves reflected by an object in pixels of the observation image;
• and
• subtracting the final optical path radiance from all pixels of the observation image for each of the wavelength bands.