Adaptive Dynamic Loading for 3D Model Rendering
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Solution Overview
Problem
Existing technologies face challenges in efficiently rendering large three-dimensional models on client devices, often resulting in poor user experience due to high computational resource requirements and memory constraints.
Innovation Solution
The implementation of adaptive dynamic loading techniques that prioritize objects based on their distance from the user's viewpoint and current model load limits, allowing for progressive rendering and efficient resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the entire 3D model is loaded into memory at once, then complete model data is available for rendering, but memory consumption exceeds device limits and rendering performance deteriorates
Solution Approach 1:
The patent divides the 3D model into multiple objects and further segments them into visible and non-visible subsets based on the user's viewpoint. Only visible objects within the current field of view are loaded into memory, while other objects remain unloaded or in a compressed state. This segmentation resolves the contradiction by providing sufficient model data for rendering without overwhelming device memory capacity.
Solution Approach 2:
The patent implements partial loading of the 3D model by selectively loading only the portion of objects that are currently visible from the user's viewpoint. This partial action approach loads less than the complete model (avoiding excessive memory usage) while still providing adequate data for rendering the current view, thus resolving the performance contradiction.
2Productivity
If computational resources are increased to render more objects, then rendering quality improves, but device resource requirements exceed available capacity
Solution Approach 1:
The patent dynamically adjusts the set of rendered objects based on the user's changing viewpoint and device performance conditions. As the user navigates through the 3D environment, the system continuously re-evaluates which objects are visible and updates the loaded object set accordingly. This dynamic adaptation allows the system to maintain high rendering quality for visible objects while keeping computational resource consumption within device capacity limits.
3Quantity of substance
If the model is loaded as a whole initially, then all objects are immediately available, but application startup time and loading speed decrease significantly
Solution Approach 1:
The patent performs preliminary setup by establishing the spatial relationships and visibility criteria for model objects before rendering begins. The system pre-processes the 3D model data structure to enable efficient querying of visible objects, but does not load all objects into memory upfront. This preliminary organization allows rapid startup while deferring actual object loading to when they become visible, resolving the time-completeness contradiction.
Data Source
AI summary
Methods, systems, and apparatus, including medium-encoded computer program products for loading and rendering include: obtaining a 3D spatial access tree data structure encoding location information for objects in a 3D model of an environment, wherein the 3D model is stored on a remote computer system; ranking a set of the objects in the 3D model to form an object hierarchy based at least on distances between each object of the set of objects and a specified viewpoint for a user within the environment, as determined using the three-dimensional spatial access tree data structure; selecting a proper subset of the set of objects to be rendered based on the object hierarchy and a current model load limit; downloading the proper subset to the local memory; and rendering the proper subset from the local memory to the display device based on the specified viewpoint within the environment for the user.