TY  - JOUR
T1  - Real-Time Nonlinear Lens-Flare Rendering Method Based on Look-Up Table
AU  - Jo, Sunghun 
AU  - Jeong, Yuna 
AU  - Lee, Sungkil 
JO  - Journal of KIISE, JOK
PY  - 2017
DA  - 2017/1/14
DO  - 
KW  - lens flare
KW  - rendering
KW  - look-up table
KW  - blending
KW  - non-linear patterns
AB  - In computer graphics, high-quality lens flares have been generated using costly offline rendering. A recent matrix-based approximation has enabled generation of high-quality lens flares suitable for real-time applications, but its quality degrades due to the lack of nonlinear patterns of lens flares. This paper introduces a method for high-quality lens-flare rendering, which includes blending of both nonlinear as well as linear patterns. The nonlinear patterns are pre-rendered or photographically captured offline and stored in a look-up table. The online stage reads only the pattern by looking up the table using a light angle, hence making its performance drop negligible while greatly improving the quality.