Volume painting: incorporating volumetric rendering with line integral convolution (LIC)

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Title: Volume painting: incorporating volumetric rendering with line integral convolution (LIC)
Author: Lee, Jaewook
Abstract: This thesis presents an expressive (non -photorealistic ) rendering approach created by combining volumetric rendering techniques with the Line Integral Convolution (LIC ) in 3D space . Although some techniques that combine volume rendering with the LIC have been introduced in computer graphics , they are mainly used for the scientific visualization fields , such as the visualization of 3D fluid fields . Unlike earlier research , we will focus on artistic representation , which is significantly different than scientific visualization research . We will implement a brush -stroke effect on the implicit surfaces by using the LIC . The implicit surfaces are described as volume datasets that are created by the voxelization of triangular meshes . To acquire smearing effects on the surface we convolve along the vector fields with the densities of the voxels of the datasets . These vector fields are defined by users as texture maps . The final images are rendered with volume ray casting , integrating colors and densities of voxels with Perlin noise along vector fields . The Perlin noise provides randomness and allows us to generate scratches . Smearing effects on the surface of an object create the illusion of 3D brush -strokes as if a painter had created brush strokes on a canvas . The rendering system is implemented using standard C and C++ programming languages . 3D models are then created using Alias MayaTM and TopmodTM .
URI: http : / /hdl .handle .net /1969 .1 /2642
Date: 2005-11-01

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Volume painting: incorporating volumetric rendering with line integral convolution (LIC). Available electronically from http : / /hdl .handle .net /1969 .1 /2642 .

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