Single-Camera Light Tag Tracking With Pressure-Based 3D Positioning
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Solution Overview
Problem
Existing systems for tracking light emitting tags in three-dimensional spaces require multiple imaging devices, which is costly and inefficient due to the lack of depth information in two-dimensional images captured by a single imaging device.
Innovation Solution
An information processing apparatus that uses a single imaging device to acquire images, specify two-dimensional coordinates of light emitting devices, and calculate three-dimensional coordinates by incorporating output information from the light emitting devices and atmospheric pressure sensors to determine height and position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple imaging devices are used to specify three-dimensional coordinates, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent transitions from two-dimensional image coordinates to three-dimensional space coordinates by introducing a new dimension (depth/height) through atmospheric pressure measurement. The atmospheric pressure sensor mounted on the light emitting device provides height information that, when combined with two-dimensional image coordinates from a single imaging device, enables accurate three-dimensional positioning without requiring multiple imaging devices.
2Device complexity
If a single imaging device is used, then device complexity is reduced, but measurement precision deteriorates due to lack of depth information
Solution Approach 1:
The atmospheric pressure sensor acts as an intermediary device that provides the missing depth/height information. Instead of using multiple imaging devices to capture depth, the system introduces a pressure sensing intermediary that measures atmospheric pressure to determine height, thereby enabling three-dimensional positioning with a single imaging device.
3Measurement precision
If atmospheric pressure sensing is added to light emitting devices, then three-dimensional tracking accuracy is improved, but manufacturing complexity increases
Solution Approach 1:
The patent utilizes atmospheric pressure as a measurable physical parameter that correlates with height. By mounting a pressure sensor on the light emitting device, the system converts pressure variations into height information, enabling three-dimensional tracking. This approach adds only a single sensor component rather than fundamentally redesigning the light emitting device structure.
Data Source
AI summary
An information processing apparatus includes a processor configured to acquire an image obtained by imaging a space by one imaging device fixed in the space, specify, in the image, a two-dimensional coordinate of a bright spot indicating light emission of a light emitting device moving in the space, acquire output information output by the light emitting device, and specify a three-dimensional coordinate in the space of the light emitting device based on the output information and the two-dimensional coordinate.