Method and system for rendering simulated depth-of-field visual effect
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United States of America Patent
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Aug 16, 2016
Grant Date -
Dec 18, 2014
app pub date -
Jun 18, 2013
filing date -
Jun 18, 2013
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Abstract
Systems and methods for rendering depth-of-field visual effect on images with high computing efficiency and performance. A diffusion blurring process and a Fast Fourier Transform (FFT)-based convolution are combined to achieve high-fidelity depth-of-field visual effect with Bokeh spots in real-time applications. The brightest regions in the background of an original image are enhanced with Bokeh effect by virtue of FFT convolution with a convolution kernel. A diffusion solver can be used to blur the background of the original image. By blending the Bokeh spots with the image with gradually blurred background, a resultant image can present an enhanced depth-of-field visual effect. The FFT-based convolution can be computed with multi-threaded parallelism.
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