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Which statement about bump mapping and normal mapping is true?
Answer: The answer is (b) Normal mapping is used to make low-polygon objects look more detailed.
What are the bumpy maps called?
A raised-relief map or terrain model is a three-dimensional representation, usually of terrain, materialized as a physical artifact.
What are three dimensional maps?
3D mapping means profiling of objects in three dimensions to map the objects in real-world. There are several ways for a 3D profiling of an area or object, such as using a pair of a stereo camera. Another method is to measure the depth of an object or feature from focus.
What’s the difference between bump mapping and normal mapping?
“In 3D computer graphics, normal mapping is an application of the technique known as bump mapping. While bump mapping perturbs the existing normal (the way the surface is facing) of a model, normal mapping replaces the normal entirely. Like bump mapping, it is used to add details to shading without using more polygons.
Why do people use normals instead of bumps?
The main reason everyone is using normals over bumps these days (even painted bumps converted to normals) is SPEED, the engine has to convert a bump map to normal space before it renders it anyway so you save the engine a little bit of work by doing it yourself. Also normal maps are 24 bit where as regular bump maps are only 8 bit.
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.
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.