ATEC_ProjectionMapping: yoobae kim: Project 4 Relief Mapping (Week 9-12)

Yoobae Kim Projection mapping strategies for relief objects (Week 9-12)

Concets:

Relief mapping is a texture mapping technique used to render the surface details of three-dimensional objects accurately and efficiently. Relief mapping is highly comparable in both function and approach to another displacement texture mapping technique.

The model will be tested on UV calibration and line output

In this project, I will explore projection mapping strategies for relief objects. Reliefs are objects that project from the wall. The ideal relief objects for projection mapping have large surface areas that do not occlude/block light of cast shadows.

UV Coordinates

UV mapping refers to the way each 3D surface is mapped to a 2D texture. Each vertex contains a set of UV coordinates, where (0.0, 0.0) refers to the lower left corner of the texture and (1.0, 1.0) refers to the upper right corner of the texture. If the UV coordinates is outside the 0.0 to 1.0 range, the coordinates are either clamped or the texture is repeated (dependent of the texture import setting in Unity).

Texture Mapping

To create a surface that resembles real life you need to turn to texture mapping. This process is similar to adding decorative paper to a white box. In 3D, texture mapping is the process of adding graphics to a polygon object. These graphics can be anything from photographs to original designs. Textures can help age your object and give them more appeal and realism.

UV Mapping

A 3D object has many sides and a computer doesn't know how to correctly put a 2D texture onto a 3D object. A UV map is basically the 3D model stretched out into a flat 2D image. Each face on your polygon object is tied to a face on the UV map. Now placing a 2D texture onto this new 2D representation of your 3D object is much easier.