Automatic AR Marker Registration via Image Feature Extraction
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Solution Overview
Problem
The existing augmented reality (AR) systems require manual registration of AR markers in a global coordinate system, which is cumbersome and necessitates positioning markers on walls or similar surfaces, limiting their flexibility and efficiency.
Innovation Solution
An information processing apparatus with a camera, memory, and processor that automatically extracts feature values from images to determine location, allowing for the use of any image with a high feature value score as a marker, eliminating the need for manual marker placement and registration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual registration of AR markers in global coordinate system is used, then tracking accuracy is achieved, but operation complexity and setup time increase significantly
Solution Approach 1:
The system performs automatic marker detection and coordinate system establishment without requiring manual intervention. The AR device automatically detects markers in the environment, extracts their feature values, and establishes the relationship between marker coordinate systems and the global coordinate system autonomously, eliminating the need for manual coordinate input and marker positioning.
Solution Approach 2:
The patent replaces the manual mechanical process of positioning markers on walls and inputting coordinates with an automated image processing system. The system uses camera imaging, feature value extraction, and automatic coordinate calculation to substitute the manual mechanical operations, thereby reducing operation complexity while maintaining tracking accuracy.
2Reliability
If traditional AR markers are positioned on walls, then stable tracking is achieved, but system flexibility and adaptability decrease
Solution Approach 1:
The system enables any image-containing object to function as a marker, not just traditional wall-mounted markers. By extracting feature values from images captured by the camera, the system allows diverse objects such as posters, product packaging, and other image-bearing surfaces to serve as tracking markers, greatly enhancing system versatility while maintaining tracking stability through reliable feature value matching.
3Manufacturing precision
If manual marker input and registration is required, then precise marker location control is achieved, but productivity and setup efficiency decrease
Solution Approach 1:
The system pre-establishes a database of marker feature values and their corresponding locations. During operation, the device automatically compares captured image feature values against this pre-stored database to quickly identify and track markers, eliminating the need for manual coordinate input and significantly improving setup efficiency while maintaining precise location control through the pre-configured marker information.
Data Source
AI summary
An information processing apparatus includes a camera acquiring an image, a memory storing a feature value of an image associated with a location, and a processor. When a current location of the apparatus is not stored in the memory, the processor extracts a first area from an acquired image, acquires a first feature value of the first area, and when a feature value that is substantially identical with the first feature value is stored in the memory, determines the current location using a location stored in the memory in association with the feature value. When the current location is stored in the memory, the processor extracts a second area from an acquired image, acquires a second feature value of the second area, determines a location corresponding to the second area using the current location, and stores in the memory the determined location in association with the second feature value.