Digital Image Processing

  Atmospheric Correction Models and Softwares: Anyway so for atmospheric correct models and software what are available today. Because everyone will not be developing their own models for atmospheric correction and neither coding things so what are currently what is available. So for most atmospheric correction algorithms is it necessary to solve the radiative transfer equation and establish as just we have seen. Establish look-up tables also we have seen one slide back, for rapid atmospheric corrections resulting in a series of atmospheric correction models. And which is based on the theory of atmospheric radiative transfer and these models like MODTRAN moderate-resolution atmospheric transmittance and radiance code. Now one more issue or intimation is coming for moderate resolution.  There was resolution high moderate coarse these are all relative terms, so what was moderate yesterday is coarse today and what was high yesterday is a moderate today.m So none the less not for very high

  Atmospheric Correction Approaches what is that process atmospheric correction is the process of removing the effects of the atmosphere on the reflectance values of images taken by satellite or airborne sensors. Here it has been mentioning the reflectance value these values can be also an emittance value. So the atmosphere correction is the process of removing, the facts of the atmosphere as I have already said that this is because of complications within the atmosphere about the radiation this is really challenging. So large amounts of images as we know are being collected by satellites and have already been collected by various satellites of various countries. And these are largely contaminated or affected by the atmosphere or the particles which are present and gases. And almost all images are suffering from either absorption scattering of the radiation of the earth's surface.                 So you see an image that will be having some effects on the atmosphere, I will let me