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Author Nguyen, Minh X. ♦ Xu, Hui ♦ Yuan, Xiaoru ♦ Chen, Baoquan
Source CiteSeerX
Content type Text
File Format PDF
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Npr System ♦ Simple Primitive ♦ Ex-tracting Feature Point ♦ Feature Extraction ♦ Frame-to-frame Coherence ♦ First Step ♦ Second Step ♦ Small Computational Overhead ♦ Various Representation ♦ Available Programmable Graphic Hardware ♦ Hybrid Mod-els ♦ Interactive Npr ♦ Nonphotorealistic Rendering System ♦ Feature Point ♦ Interactive Non-photorealistic Rendering System ♦ Model Representation ♦ Object Space ♦ Non-photorealistic Rendering ♦ Second Step Render ♦ Different Npr Style ♦ Two-step Rendering Process ♦ Interactive Image ♦ Prominent Issue ♦ Pixel Shaders ♦ Image Space ♦ Connectivity Information ♦ Slight Modification ♦ Performing Texture
Description In Pacific Graphics (2003
Two prominent issues in non-photorealistic rendering (NPR) are ex-tracting feature points for placing strokes and maintaining frame-to-frame coherence and density of these feature points. Most of the existing NPR systems address these two issues by directly operat-ing on objects, which can not only be expensive, but also dependent on representation. We present an interactive non-photorealistic rendering system, INSPIRE, which performs feature extraction in both image space, on intermediately rendered images, and object space, on models of various representations, e.g., point, polygon, or hybrid mod-els, without needing connectivity information. INSPIRE performs a two-step rendering process. The first step resembles traditional rendering with slight modifications, and is often more efficient to render after the extraction of feature points and their 3D properties in image and/or object space. The second step renders only these feature points by either directly drawing simple primitives, or addi-tionally performing texture mapping to obtain different NPR styles. In the second step, strategies are developed to promise frame-to-frame coherence in animation. Because of the small computational overheads and the success of performing all the operations in vertex and pixel shaders using popularly available programmable graphics hardware, INSPIRE obtains interactive NPR rendering with most styles of existing NPR systems, but offers more flexibility on model representations and compromises little on rendering speed.
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Learning Resource Type Article