Web-Based AR Content Overlay Using Image Data for Indoor Positioning
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Solution Overview
Problem
Current augmented reality (AR) content authoring is complex and inefficient due to the difficulty in incorporating real-world physical objects into databases and updating them, as well as challenges in sharing and reusing AR models, especially in indoor environments where traditional coordinate systems are impractical.
Innovation Solution
An apparatus and method using a Web information structure with an HTML document that sets a uniform resource identifier (URI) for points of interest (POIs) in a 3D physical space, allowing for the identification and matching of virtual objects with POIs using attribute information from devices like GPS, inertial sensors, and RFID tags, and displaying them in a 3D virtual space through a Web browser.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional AR content authoring methods are used with 3D modeling tools and earth coordinate systems, then AR contents can be created and displayed, but the complexity of incorporating and updating physical objects in the database increases significantly
Solution Approach 1:
The patent uses image data captured by the camera as a direct representation of physical objects, replacing the need to create and maintain complex 3D models in a database. The captured image serves as a copy that can be directly overlaid with virtual objects, eliminating the cumbersome process of incorporating physical objects into traditional AR databases while maintaining accuracy.
Solution Approach 2:
The patent introduces image data as an intermediary between the physical object and the virtual object. Instead of directly mapping virtual objects to physical objects using complex coordinate systems and database entries, the captured image acts as a mediator that simplifies the association process, making it easier to create and update AR contents.
2Adaptability or versatility
If earth coordinate systems and latitude-longitude positioning are used for AR applications, then outdoor AR contents can be displayed, but the applicability and accuracy in indoor environments deteriorate
Solution Approach 1:
The patent applies local quality by using camera-captured images as the reference framework for each specific location. Instead of relying on a global coordinate system that works poorly indoors, the system creates a local reference frame based on the actual visual field captured by the camera, enabling accurate indoor positioning and AR content placement without depending on latitude-longitude data.
3Ease of manufacture
If AR models are created using traditional authoring systems, then specific AR contents can be generated, but the ease of sharing and reusing these models across different applications decreases
Solution Approach 1:
The patent makes the AR content creation process universal by using standard image data and overlay techniques that can be applied across different applications and devices. The method of capturing images and superimposing virtual objects on them is a universal approach that can be reused in various contexts without requiring application-specific 3D models, thereby enhancing shareability and reusability.
Solution Approach 2:
By using captured images as the base for AR content rather than application-specific 3D models, the patent enables easy copying and reuse of AR contents across different applications. The image-based approach allows the same AR content to be replicated and adapted to various contexts without requiring recreation, improving versatility and reducing development effort.
4Ease of operation
If conventional HTML documents are used for content layout, then web pages can be displayed on a plane, but the ability to represent and interact with 3D physical space deteriorates
Solution Approach 1:
The patent transitions from 2D HTML document display to 3D spatial representation by overlaying virtual objects onto 3D physical space captured through the camera. This dimensionality change allows the system to maintain web browser compatibility while enabling rich 3D interactions and representations, effectively bridging the gap between traditional web technologies and immersive AR experiences.
Data Source
AI summary
There are provided an augmented reality contents providing apparatus based on a Web information structure including: an HTML document that includes a URI setting unit setting a uniform resource identifier (URI) corresponding to a point of interest (POI), a POI processing unit collecting attribute information from a target terminal and identifying the POI by using the collected attribute information, a virtual object processing unit that matches a virtual object associated with the URI to the identified POI; and a 3D browser engine used for setting coordinates on the 3D physical space such that the POI and the virtual object are displayed in a 3D virtual space through a Web browser of the target terminal, analyzing video information of the POI and the virtual object based on the set coordinates, and providing the target terminal the analyzed video information.