For example, fine-grained sand would appear fairly smooth to long wavelength microwaves but would appear quite rough to the visible wavelengths. If the wavelengths are much smaller than the surface variations or the particle sizes that make up the surface, diffuse reflection will dominate. Whether a particular target reflects specularly or diffusely, or somewhere in between, depends on the surface roughness of the feature in comparison to the wavelength of the incoming radiation. ![]() Most earth surface features lie somewhere between perfectly specular or perfectly diffuse reflectors. Diffuse reflection occurs when the surface is rough and the energy is reflected almost uniformly in all directions. ![]() When a surface is smooth we get specular or mirror-like reflection where all (or almost all) of the energy is directed away from the surface in a single direction. We refer to two types of reflection, which represent the two extreme ends of the way in which energy is reflected from a target: specular reflection and diffuse reflection. In remote sensing, we are most interested in measuring the radiation reflected from targets. Reflection (R) occurs when radiation "bounces" off the target and is redirected. The proportions of each will depend on the wavelength of the energy and the material and condition of the feature.Ībsorption (A) occurs when radiation (energy) is absorbed into the target while transmission (T) occurs when radiation passes through a target. The total incident energy will interact with the surface in one or more of these three ways. These are: absorption (A) transmission (T) and reflection (R). There are three (3) forms of interaction that can take place when energy strikes, or is incident (I) upon the surface. Note 2: This tutorial doesn't cover other aspect of customisation like Head Aliases, sub models but those are self explanatory.Radiation that is not absorbed or scattered in the atmosphere can reach and interact with the Earth's surface. Note 1: Models from older COD are very hard to get working as the animation require BO3 rigged bodies It is up to you to obtain the models you want to import but here is some guidance on what is required to match Black Ops 3 Zombies:
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