Method and system for rendering simulated depth-of-field visual effect

A non-transient computer readable storage medium comprising executable instructions that implements a method of rendering an image, said method comprising:

• accessing a first image;
• identifying a first portion and a second portion of said first image;
• selecting a plurality of regions from said second portion of said first image, said plurality of regions comprising luminous regions on said first image;
• perform ing a Fast Fourier Transform (FFT) convolution on said plurality of regions with a convolution kernel representing a geometric shape;
• and
• performing an inverse FFT convolution on said plurality of regions to produce a second image.

A system comprising

• a processor;
• a memory coupled to said processor and storing an image processing program, said image processing program comprising instructions that cause said processor to perform a method of generating an image, said method comprising:
• accessing a first image;
• identify a first portion and a second portion of said first image;
• selecting a plurality of regions from said second portion of said first image, said plurality of regions comprise luminous regions on said first image;
• performing a Fast Fourier Transform (FFT) convolution on said plurality of regions with a convolution kernel representing a geometric shape to produce an intermediate image;
• performing an inverse FFT convolution on said intermediate image to produce a second image;
• applying a blur operator on said second portion of said first image and preserving said first portion to produce a third image;
• and
• combining said second image and said third image to produce a resultant image.