3D Gesture Recognition for Virtual Grid Interaction
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Solution Overview
Problem
Current augmented reality (AR) systems are limited and costly, restricting user interaction with virtual objects in three-dimensional (3D) sensory spaces, requiring specialized hardware and offering coarse, imprecise, and cumbersome control methods.
Innovation Solution
A system that generates a virtual grid in a 3D sensory space, allowing users to interact with virtual items through free-form gestures, detecting and interpreting these gestures to select and navigate virtual objects without the need for specialized hardware, using cameras and image analysis to distinguish object pixels from background pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If specialized hardware is used for AR interaction, then measurement precision and control accuracy are improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces specialized mechanical AR hardware with a camera-based optical system. The camera captures images of the user's hand and fingers, and software algorithms process these images to detect gestures and determine 3D spatial positions. This substitution of mechanical sensing with optical sensing and computational processing achieves sub-millimeter precision interaction without requiring complex specialized hardware
Solution Approach 2:
The patent creates a virtual copy of the physical hand and finger movements in the digital realm. By capturing images of the user's hand and generating corresponding virtual representations, the system enables precise interaction control through software-based gesture recognition rather than specialized hardware sensors
2Measurement precision
If specialized hardware is deployed, then interaction precision is improved, but ease of operation and accessibility deteriorate
Solution Approach 1:
The patent enables the system to use the user's own hand and fingers as the control interface. The camera captures the user's natural hand movements, and the software automatically processes these movements to generate control signals. This eliminates the need for users to learn specialized hardware operation or complex gesture vocabularies, making the system intuitive and accessible while maintaining sub-millimeter precision
3Adaptability or versatility
If complex AR systems are implemented, then interaction capability is improved, but device complexity and cost increase
Solution Approach 1:
The patent creates a universal gesture recognition system that can identify multiple different hand gestures and map them to various control functions. The same camera-based system can detect different finger configurations, movement patterns, and hand shapes to enable diverse interactions with virtual objects, providing versatile functionality through a single unified platform rather than multiple specialized systems
Solution Approach 2:
The patent utilizes changes in multiple parameters of hand gestures (finger position, finger orientation, hand shape, movement velocity, movement direction) to encode different control commands. By monitoring and interpreting these parameter changes in real-time, the system achieves versatile interaction capability through software-based parameter analysis rather than complex hardware
4Reliability
If traditional AR interaction methods are used, then system functionality is maintained, but ease of operation deteriorates due to coarse and cumbersome control
Solution Approach 1:
The patent transitions from traditional 2D screen-based interaction to 3D spatial gesture recognition. The camera captures the user's hand in three-dimensional space, and the system interprets gestures along multiple spatial dimensions (x, y, z coordinates, rotation, scaling). This dimensional expansion enables more intuitive and natural control while maintaining full system functionality
Data Source
AI summary
The technology disclosed relates to selecting a virtual item from a virtual grid in a three-dimensional (3D) sensory space. It also relates to navigating a virtual modality displaying a plurality of virtual items arranged in a grid by and automatically selecting a virtual item in a virtual grid at a terminal end of a control gesture of a control object responsive to a terminal gesture that transitions the control object from one physical arrangement to another. In one implementation, the control object is a hand. In some implementations, physical arrangements of the control object include at least a flat hand with thumb parallel to fingers, closed, half-open, pinched, curled, fisted, mime gun, okay sign, thumbs-up, ILY sign, one-finger point, two-finger point, thumb point, or pinkie point.