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What is surface imperfection?
A surface imperfection is an unwanted difference in depth, height or structure to the surrounding area. For example: a scratch, which is basically a sudden difference in depth with an edge that has an angle that is very different to the one of the surrounding area.
What does normal map do?
Normal maps are a type of Bump Map. They are a special kind of texture that allow you to add surface detail such as bumps, grooves, and scratches to a model which catch the light as if they are represented by real geometry.
What are surface imperfection maps?
These are not traditional diffuse textures, but are scans of the subtle imperfections that are shared by most materials, such as smudges, scratches and fingerprints. The resulting greyscale maps can be used as glossiness, bump, anisotropy, and specular maps, to add those imperfections back into any 3D material. (
What are surface defects?
Surface defects are the boundaries or planes that separate a material into regions, with each region having the same crystalline structure but a different orientation. Surface defects are usually formed by surface finishing methods like embossing or by degradation caused by weathering or environmental stress cracking.
What is bump normal?
Normal maps can be referred to as a newer, better type of bump map. In the end, a normal map does create the illusion of depth detail on the surface of a model but it does it differently than a bump map. As we already know, a bump map uses grayscale values to provide either up or down information.
How are bumps created in a bump map?
Bump maps create the illusion of depth and texture on the surface of a 3D model using computer graphics. Textures are artificially created on the surface of objects using grayscale and simple lighting tricks, rather than having to manually create individual bumps and cracks.
What’s the difference between height and bump maps?
The most obvious difference is that height maps are greyscale only, because they only portray height differences. Black is ‘down’, white is ‘up’, and 0.5 gray means no change of height. There are a couple different types of height maps that you might be familiar with already. Bump maps are the old school way of adding detail to low poly objects.
How are bump maps used in low poly games?
Bump maps are the old school way of adding detail to low poly objects. They are used in the same way as normal maps, except they only contain height information and not angle information.
How does a normal map work in 3D?
A normal map uses RGB information that corresponds directly with the X, Y and Z axis in 3D space. This RGB information tells the 3D application the exact direction of the surface normals are oriented in for each and every polygon.