Virtual Focus Model for Depth of Field Rendering

The patent segments the scene into multiple depth planes or layers, each with its own focus characteristics. Instead of computing continuous depth of field across the entire scene, the system divides space into discrete depth zones and applies simplified focus models to each zone, reducing overall computational complexity while maintaining rendering precision.

The patent changes the parameter representation from continuous spatial coordinates to discrete depth plane indices. By representing depth as a set of discrete planes with assigned focus values, the system transforms complex continuous optimization problems into simpler discrete parameter assignments, reducing computational burden while preserving visual realism.

The patent applies local quality by assigning different focus characteristics to different spatial regions or depth planes within the scene. Instead of uniform defocus across all virtual objects, each depth plane or region receives customized focus parameters based on its specific distance and importance, creating realistic depth of field effects without requiring complex per-object calculations.

The patent introduces a depth plane dimension as an intermediate layer between the camera and virtual objects. By organizing scene elements into stacked depth planes rather than treating them as individual objects, the system adds a spatial dimension for focus management, enabling nuanced depth of field control through plane-level operations rather than object-level operations.

The patent creates virtual copies of physical stage sets and props using computer-generated imagery. Instead of building physical sets, the system renders photorealistic virtual environments and objects that can be dynamically adjusted and modified without physical reconstruction, achieving realism while eliminating the time and cost of physical production.

The patent substitutes mechanical physical set construction with computational rendering systems. By replacing physical materials, structures, and manual assembly processes with software-based virtual scene generation, the system achieves comparable or superior realism while dramatically reducing production time and enabling rapid iteration.