Information Terminal Space Recognition via Label Coordinate Adaptation
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Solution Overview
Problem
Conventional information terminals, such as head-mounted displays (HMDs), face challenges in accurately displaying virtual images within a target space due to mismatched coordinate systems between the terminal and the space. This leads to difficulties in positioning and directing virtual images correctly.
Innovation Solution
The proposed solution involves a space recognition system that includes an information terminal with a terminal coordinate system and a label with space identification information. The terminal recognizes the label, specifies space data in a space coordinate system, measures the positional and directional relations between the terminal and the label, and adapts the terminal coordinate system to the space coordinate system based on these measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional measurement methods (camera or ranging sensor) are used to measure the position of real objects, then measurement capability is provided, but the process takes time and is difficult to perform quickly
Solution Approach 1:
The patent applies preliminary action by pre-establishing coordinate system conversion relationships and space data models before actual measurement tasks. The information terminal pre-loads space data including coordinate system parameters, so when measurement is needed, the conversion relationships are already prepared and can be applied immediately without time-consuming calculations during the measurement process itself.
2Measurement precision
If the coordinate system of the information terminal is adapted to the space coordinate system, then accurate virtual image positioning is achieved, but the system complexity increases due to coordinate transformation processes
Solution Approach 1:
The patent uses space data as an intermediary element that bridges the terminal coordinate system and the space coordinate system. The space data contains pre-defined conversion parameters and transformation rules that act as a mediator, allowing the information terminal to convert coordinates without directly implementing complex real-time transformation algorithms, thus reducing system complexity while maintaining positioning accuracy.
3Measurement precision
If space data is used to describe the shape and position of space, then accurate space recognition is enabled, but the difficulty of detecting and measuring increases
Solution Approach 1:
The patent applies segmentation by dividing space data into distinct modular components: terminal coordinate system parameters, space coordinate system parameters, conversion relationships, and space shape descriptions. This segmentation allows the information terminal to process only the relevant portions of space data needed for specific tasks, reducing the overall difficulty of detection and measurement while maintaining comprehensive space recognition capability.
Data Source
AI summary
The space recognition system includes: an information terminal of a user having a function of displaying an image on a display surface and having a terminal coordinate system WA; and a label which is provided to correspond to a space and in which information for identifying the space is described. When recognizing the space, the information terminal specifies space data in which the space and the label are described in a space coordinate system W1 by using the information read from recognition of the label, measures relations in a position and a direction between the information terminal and the label by using the space data, and adapts the terminal coordinate system WA to the space coordinate system W1, based on data representing the measured relations.