Multi-Pass Rendering for Artistic CGI Style Blending
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Solution Overview
Problem
Computer-generated imagery (CGI) often prioritizes accuracy and precision over artistic license, limiting the creative expression of animators and art directors, as it relies on computationally intensive techniques for photorealistic rendering rather than allowing for artistic styles and expressions.
Innovation Solution
The method involves rendering objects or scenes with multiple artistic looks by using different texture maps, shaders, and geometric descriptions, allowing for a weighted combination based on scene properties, brightness, or other parameters to create a visually appealing image that emphasizes artistic expression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If computationally intensive techniques such as radiosity, ray tracing, and photon mapping are used to generate photorealistic CGI images, then image accuracy and precision are improved, but artistic license and creative expression are reduced
Solution Approach 1:
The patent segments the rendering process into multiple passes, each responsible for different aspects of the final image. The first pass generates a photorealistic base image using accurate lighting calculations, while subsequent passes apply artistic effects and stylization. This segmentation allows both photorealistic accuracy and artistic expression to coexist in the final rendered image.
Solution Approach 2:
The patent introduces dynamic control over the blending between photorealistic and artistic rendering styles. Users can adjust parameters to vary the degree of artistic stylization applied to different portions of the image or to the overall scene. This dynamic approach enables flexibility in balancing accuracy and artistic license based on creative needs.
2Measurement precision
If photorealistic rendering techniques are used, then image precision is improved, but computational resources and rendering time are increased
Solution Approach 1:
The rendering process is divided into multiple passes where computationally expensive photorealistic calculations are performed only once in the first pass to establish accurate lighting and shadows. Subsequent passes apply artistic effects that are less computationally intensive, significantly reducing total rendering time while maintaining image precision.
Solution Approach 2:
The patent performs preliminary photorealistic rendering in the first pass to establish accurate lighting, shadows, and material properties. This preliminary action captures the essential photorealistic elements before applying artistic stylization, avoiding the need to recalculate expensive lighting effects in subsequent artistic passes.
3Measurement precision
If detailed textures are applied throughout the entire image, then image quality is improved, but computational complexity and memory usage are increased
Solution Approach 1:
The patent applies different levels of texture detail to different regions of the image based on their visual importance. High-detail textures are applied only to focal points and foreground elements, while lower-detail textures are used for background and less important areas. This local quality approach maintains overall image quality while reducing computational complexity and memory requirements.
Solution Approach 2:
Instead of applying full-detail textures uniformly across the entire image, the patent applies detailed textures selectively to only the portions of the image that require them for artistic effect. This partial application of high-detail textures reduces computational complexity while maintaining the visual quality needed for the artistic vision.
Data Source
AI summary
A computer system comprises a memory configured to store a geometric description of an object, wherein the memory is configured to store a first set of parameters associated with a first artistic look, and wherein the memory is configured to store a second set of parameters associated with a second artistic look, and a processor coupled to the memory, wherein the processor is configured to determine a first set of rendered data in response to the first set of parameters and to the geometric description of the object, wherein the processor is configured to determine a second set of rendered data in response to the second set of parameters and to the geometric description of the object, and wherein the processor is configured to determine a visual representation for the object in response to the first set of rendered data and in response to the second set of rendered data.