Occlusion Reduction Lens for 3D Polygonal Data
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In 3D computer graphics and data presentations, occlusion of objects of interest by other objects in the viewer's line of sight is a common issue, and existing methods for occlusion reduction and magnification are inadequate, particularly in preserving contextual information and providing clear visual access to hidden features.
Innovation Solution
A method involving the establishment of a lens with a magnified focal region and a shoulder region for occlusion reduction, where polygons are subdivided to improve displacement quality, and objects are displaced based on a transformation function to ensure the object-of-interest remains visible, combined with detail-in-context presentation techniques like EPS to maintain contextual information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If traditional occlusion resolution methods (cutting planes, transparency, filtering) are used to provide visual access to occluded elements, then clear lines of sight to hidden features are improved, but contextual information is removed or reduced
Solution Approach 1:
The patent applies detail-in-context magnification by transforming 2D information space into 3D space, allowing simultaneous viewing of both occluded elements and contextual information. The magnified region is elevated in the third dimension while maintaining its spatial relationship to surrounding context, resolving occlusion without removing contextual information.
Solution Approach 2:
The patent applies selective magnification to specific regions of interest while preserving the original scale and context of surrounding areas. This local transformation allows detailed examination of occluded elements without affecting or removing the broader contextual information in the presentation.
2Stability of the object's composition
If 3D presentations are used to preserve spatial relationships and provide physically plausible scenes, then spatial context is maintained, but occlusion of interior features becomes inevitable
Solution Approach 1:
The patent introduces a magnification dimension that allows interior features to be viewed in detail while maintaining their original 3D spatial relationships in the context. The magnified region is displaced along the view direction, creating a layered presentation where both exterior context and interior details are simultaneously visible.
Solution Approach 2:
The patent uses a magnified intermediate representation of the region of interest that acts as a mediator between the viewer and the original 3D scene. This intermediate magnified view provides access to interior features while the original 3D scene with its spatial relationships remains intact in the background.
3Loss of information
If 2D presentations are used to display all information on a plane, then complete information display is achieved, but spatial relationships and depth perception are lost
Solution Approach 1:
The patent enhances 2D presentations by introducing a third dimension for magnified regions, allowing simultaneous preservation of complete information display and spatial relationships. The magnified region is elevated in 3D space while maintaining its 2D projection position, preserving both information completeness and spatial context.
4Measurement precision
If magnification of regions of interest is applied to provide detailed viewing, then visual detail is improved, but space for surrounding context is reduced
Solution Approach 1:
The patent resolves the space conflict by elevating the magnified region into the third dimension rather than expanding it in the 2D plane. This allows the magnified region to occupy vertical space above the original 2D context area, providing detailed visual information without reducing the display space available for surrounding contextual information.
Data Source
AI summary
A method in a computer system for generating a presentation of a region-of-interest in an original image for display on a display screen, the original image being a collection of polygons having polygons defined by three or more shared edges joined at vertex points, the method comprising: establishing a lens for the region-of-interest, the lens having a magnified focal region for the region-of-interest at least partially surrounded by a shoulder region across which the magnification decreases, the focal and shoulder regions having respective perimeters; subdividing polygons in the collection of polygons proximate to at least one of the perimeters, as projected with the polygons onto a base plane, by inserting one or more additional vertex points and additional edges into the polygons to be subdivided; and, applying the lens to the original image to produce the presentation by displacing the vertex points onto the lens and perspectively projecting the displacing onto a view plane in a direction aligned with a viewpoint for the region-of-interest.