AR Viewpoint Reprojection for Positional Accuracy
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Solution Overview
Problem
Existing augmented reality (AR) and virtual reality (VR) technologies face challenges in accurately reflecting the three-dimensional position and posture relationship between the viewpoint and virtual objects due to processing delays, leading to positional deviations when presenting virtual content superimposed on real objects.
Innovation Solution
An information processing device and method that acquires viewpoint position and posture information, projects target objects onto a projection surface, associates relative position and posture information, restores three-dimensional object information, and reprojects the object based on the corrected relationship between viewpoints, ensuring accurate display correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If display information is corrected based on viewpoint position and posture after drawing, then positional accuracy is improved, but processing time increases
Solution Approach 1:
The patent performs reprojection of the virtual object based on the viewpoint at the timing when display information is to be output, before the actual display occurs. This preliminary action ensures that the positional relationship is pre-calculated and ready, reducing last-minute processing delays while maintaining high positional accuracy.
Solution Approach 2:
The system continuously acquires updated viewpoint position and posture information, and uses this feedback to reproject the virtual object accordingly. This closed-loop approach ensures that display information always reflects the current viewpoint state, improving positional accuracy without requiring excessive processing time.
2Productivity
If conventional correction methods are used, then processing speed is maintained, but three-dimensional position and posture relationship accuracy deteriorates
Solution Approach 1:
The patent performs reprojection by considering the three-dimensional position and posture relationship between the viewpoint and the virtual object. Instead of simple two-dimensional screen coordinate correction, the system recalculates the projection from the actual viewpoint position in 3D space, preserving spatial accuracy while maintaining processing efficiency through optimized calculations.
Data Source
AI summary
An information processing device including: an acquisition unit that acquires information according to a recognition result of position and posture of a viewpoint; a projection processing unit that projects a target object based on position and posture of a first viewpoint onto a first projection surface defined in association with the first viewpoint, associates second information according to relative position and posture relationship between the first viewpoint and the object with first information according to a result of the projection; a correction processing unit that restores three-dimensional information of the object based on the first and second information, and reprojects the object according to relative position and posture relationship between the restored object and a second viewpoint onto a second projection surface defined in association with the second viewpoint; and an output control unit that causes an output unit to present display information according to a result of the reprojection.