A realistic camera model for computer graphics
SIGGRAPH '95 Proceedings of the 22nd annual conference on Computer graphics and interactive techniques
Real-time lens blur effects and focus control
ACM SIGGRAPH 2010 papers
Physically-based real-time lens flare rendering
ACM SIGGRAPH 2011 papers
Image quality assessment: from error visibility to structural similarity
IEEE Transactions on Image Processing
Polynomial Optics: A Construction Kit for Efficient Ray-Tracing of Lens Systems
Computer Graphics Forum
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We present a practical real-time approach for rendering lens-flare effects. While previous work employed costly ray tracing or complex polynomial expressions, we present a coarser, but also significantly faster solution. Our method is based on a first-order approximation of the ray transfer in an optical system, which allows us to derive a matrix that maps lens flare-producing light rays directly to the sensor. The resulting approach is easy to implement and produces physically-plausible images at high framerates on standard off-the-shelf graphics hardware.