Augmented Reality 3D Subspace Selection via Gesture Refinement
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Solution Overview
Problem
Existing augmented reality systems face challenges in precisely selecting 3D volumes in augmented spaces using bare hand gestures due to physical boundary conditions from real objects, making it difficult for users to interact with objects of interest effectively.
Innovation Solution
A system and method that utilize a targeting unit to acquire a first subspace based on user actions, and a refinement unit to adjust the position and scale of the subspace using two-handed pinch gestures, providing a top view for precise subspace selection and transformation into a desired 3D shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If existing indirect pointing techniques are used to select targets in augmented space, then users can interact with objects from a distance, but the precision of 3D volume selection is insufficient
Solution Approach 1:
The selection process is divided into two distinct phases: a targeting phase that establishes an initial selection volume using indirect pointing, and a refinement phase that allows precise adjustment of the volume boundaries. This segmentation enables users to first select a general region from a distance, then refine the selection precision without requiring direct contact with the target object.
Solution Approach 2:
The system performs preliminary target acquisition through indirect pointing before the final selection is made. The initial selection volume is established in advance, and then users can adjust and refine this pre-selected volume using hand gestures, separating the coarse selection from fine-tuning operations.
2Adaptability or versatility
If volumetric selection techniques are applied in augmented space, then 3D objects can be selected, but physical boundary conditions from real objects limit user interaction
Solution Approach 1:
The system introduces a virtual selection volume as an intermediary between the user and the target object. Users interact with this intermediate volume using hand gestures rather than directly manipulating the target object, which eliminates physical boundary constraints while maintaining precise selection capability.
Solution Approach 2:
The patent replaces direct mechanical interaction with objects by using gesture-based control of virtual selection volumes. Hand gestures in the air substitute for physical contact with objects, allowing users to select and manipulate 3D volumes without being constrained by physical boundaries or requiring direct contact with target objects.
Data Source
AI summary
The present invention includes: a targeting unit configured to, when an event by a user's action is generated in a 3D image displayed on a display device, acquire a first subspace of a first three-dimensional (3D) shape corresponding to the user's action; and a refinement unit configured to acquire a second subspace of a second 3D shape, of which position and scale are adjusted according to a user's gesture within a range of the first subspace acquired by the targeting unit.