Hybrid Haptic Textures for Device-Adaptive Rendering
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Solution Overview
Problem
Existing immersive systems face challenges in accurately rendering haptic textures due to limitations in interpreting haptic signals, leading to uncanny rendering effects and inflexibility in adapting to different haptic rendering devices.
Innovation Solution
A data structure is introduced that includes an additional information field to differentiate between haptic textures representing direct values and those referencing haptic signals, allowing for flexible interpretation and rendering based on device capabilities, using methods like Surface Haptic Texture (SHT) and taxels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If haptic textures are rendered using conventional methods without additional interpretation fields, then the rendering process is simple, but the rendering accuracy and adaptability to different devices deteriorate
Solution Approach 1:
The patent segments the haptic texture data into two distinct types: direct value representations and reference-based representations. By introducing an additional information field that differentiates between these types, the system enables precise control over how texture data is interpreted and rendered, resolving the contradiction between rendering accuracy and data structure complexity.
Solution Approach 2:
The patent changes the parameter space of haptic texture data by introducing an interpretation mode field that can take different values (e.g., DIRECT or REFERENCE). This parameter change allows the same texture data to be interpreted differently based on the desired rendering accuracy and device capabilities, balancing complexity with precision.
2Adaptability or versatility
If a fixed haptic rendering method is used, then the implementation is simple, but the adaptability to different device capabilities deteriorates
Solution Approach 1:
The patent introduces dynamic adaptability by allowing the rendering system to switch between different interpretation modes based on device capabilities. The additional information field enables the system to dynamically adjust its behavior - using direct values for simple devices and reference-based values for advanced devices - thus achieving versatility without overwhelming complexity.
Solution Approach 2:
The patent creates a universal haptic texture data structure that can serve multiple functions and device types through a single unified format. By incorporating an interpretation field, the same data structure can adapt to different device capabilities, making the system universally applicable across various haptic rendering devices without requiring device-specific implementations.
3Adaptability or versatility
If haptic textures directly represent values without references, then the data structure is simple, but the flexibility in rendering approaches deteriorates
Solution Approach 1:
The patent introduces an intermediary field (additional information field) that mediates between the raw texture data and the rendering process. This intermediary carries interpretation instructions that guide how the texture data should be processed, enabling flexible rendering approaches while preventing information loss about the intended interpretation mode.
Data Source
AI summary
A data structure for an immersive scene description comprises information representative of a haptic effect based on haptic texture and an additional information field to determine how to interpret haptic textures, thus allowing to differentiate between the cases where a pixel represents directly the value of the haptic effect or where a pixel references a haptic signal representing the haptic effect. The additional information may also carry information to select a bit depth and a range for a haptic property amongst a set of different settings.