Haptic Object Syntax for Collision-Based Immersive Feedback
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Solution Overview
Problem
Existing immersive systems lack effective methods to integrate haptic feedback into immersive scenes, limiting the overall user experience in environments like augmented reality, virtual reality, and mixed reality.
Innovation Solution
A haptic rendering device and method that utilize a syntax extension to the glTF format to define haptic objects within immersive scenes, incorporating haptic effects and volumes, and detect user collisions to render precise haptic feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If haptic feedback is integrated into immersive scenes using conventional methods, then user experience is improved, but the system lacks effective integration methods and haptic rendering capability
Solution Approach 1:
The patent segments the immersive scene into distinct haptic objects, each with its own haptic properties and parameters. This allows haptic feedback to be integrated systematically by dividing the complex scene into manageable haptic entities that can be independently controlled and rendered.
Solution Approach 2:
The patent introduces a haptic rendering device as an intermediary component between the immersive scene and the user. This mediator translates visual scene data into haptic feedback signals, enabling effective haptic integration without requiring fundamental changes to the entire immersive system architecture.
2Reliability
If multiple haptic effects are applied to improve realism, then user immersion is enhanced, but the complexity of defining and managing haptic objects increases
Solution Approach 1:
The patent creates a universal haptic object definition structure that can accommodate multiple types of haptic effects (vibration, pressure, temperature, etc.) through a unified parameter system. This multi-functional framework allows diverse haptic effects to be managed through consistent methods, reducing the complexity of defining and managing multiple haptic objects.
Solution Approach 2:
The patent utilizes parameter changes to control different haptic effects by modifying properties such as frequency, amplitude, duration, and intensity. By systematically varying these parameters, the system can generate diverse haptic feedback patterns without requiring complex unique definitions for each effect type.
3Measurement precision
If precise haptic feedback is rendered based on user collision detection, then haptic accuracy is improved, but the computational requirements and system complexity increase
Solution Approach 1:
The patent performs preliminary actions by pre-defining haptic objects with their spatial boundaries and haptic properties before runtime. This preparation allows the system to efficiently detect collisions by comparing user position against pre-established haptic object boundaries, reducing computational complexity during actual interaction while maintaining precise haptic feedback accuracy.
Data Source
AI summary
A haptic rendering device and corresponding rendering method allow to render a haptic effect defined in a haptic signal comprising information representative of an immersive scene description. The immersive scene comprises information representative of at least one element of the scene and information representative of a haptic object, comprising a type of haptic effect, at least one parameter of the haptic effect, and a haptic volume or surface where the haptic effect is active. The parameter of the haptic effect may be a haptic texture map. A corresponding syntax is proposed.