3D Position Tracking with Camera Imaging State Reliability
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Solution Overview
Problem
Existing position information acquisition systems face challenges in accurately determining the three-dimensional position of a target in a space using multiple cameras, as they struggle to account for the varying imaging states and positions of the cameras, leading to inconsistencies in reliability and accuracy.
Innovation Solution
A position information acquisition device and method that detects light patterns from markers using multiple cameras from different angles, calculates the three-dimensional position of the target based on detected light patterns, and assesses the reliability of the position information by considering the imaging state of each camera, storing this reliability data for improved accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple cameras are used to image markers from different directions, then the three-dimensional position information can be acquired, but the reliability and accuracy become inconsistent due to varying imaging states and camera positions
Solution Approach 1:
The system calculates reliability degree information based on imaging state information from each camera, and uses this feedback to weight and select the most reliable position measurements. The reliability degree is computed considering factors such as camera position, imaging quality, and detection confidence, allowing the system to dynamically adjust which camera data to trust more.
Solution Approach 2:
The patent introduces reliability degree as a new parameter that quantifies the quality of position information from different cameras. By changing the parameter set to include reliability metrics alongside position data, the system can objectively compare and select the best measurements from multiple cameras with varying imaging states.
2Loss of information
If position information is acquired from multiple cameras with different imaging states, then comprehensive position data can be obtained, but the complexity of processing and evaluating the reliability increases
Solution Approach 1:
The patent introduces reliability degree information as an intermediary metric that simplifies the comparison and selection process. Instead of directly comparing complex imaging states from multiple cameras, the system uses the pre-calculated reliability degrees as a mediator to objectively determine which position information to prioritize, reducing processing complexity.
Solution Approach 2:
The system performs preliminary calculation of reliability degree information for each camera before final position selection. By pre-evaluating the imaging state and computing reliability metrics in advance, the system prepares the data in a standardized format that simplifies subsequent position information selection and processing.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances the accuracy and reliability of three-dimensional position determination by accounting for camera positions and imaging states, leading to more precise tracking and positioning of targets within a space.
Implementation Method 1
detect light that is based on identification information included in-common in captured images that are images of the space captured from a plurality of shooting directions
Data Source
AI summary
A position information acquisition device for acquiring position information of a position acquisition target arranged in a space includes a processor configured to detect light that is based on identification information included in-common in captured images that are images of the space captured from a plurality of shooting directions that are different from each other, acquire a three-dimensional position in the space of the position information acquisition target identified by the identification information, based on detection positions of the detected light in the captured images, and position information of image capturing devices during capturing performed by the image capturing devices, acquire reliability degree information of the acquired three-dimensional position of the position information acquisition target, based on information relating to an imaging state of each image capturing device during capturing of the captured images, and store the acquired the reliability degree information in a storage.