Hybrid Positioning for Input Devices Using Camera and Gyro Sensors
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Solution Overview
Problem
Conventional information processing systems limit user input operations to a specific range due to reliance on camera imaging, restricting the movement of input devices and affecting operability.
Innovation Solution
An information processing program and system that utilize both imaging information and attitude sensor data to calculate positions, allowing continuous and seamless input operations even when camera imaging is not possible, by switching between camera and gyro coordinates for control positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the system uses camera imaging to calculate position, then measurement precision is improved, but the range of input device movement is limited
Solution Approach 1:
The patent combines camera imaging means and attitude sensor means into a hybrid positioning system. The camera provides high-precision position calculation when the imaging target is visible, while the attitude sensor provides continuous positioning capability when the camera cannot capture the target, thus expanding the overall operational range without sacrificing precision in the camera's optimal range.
Solution Approach 2:
The attitude sensor acts as an intermediary that bridges the gap between camera-based positioning and free movement. When the camera cannot determine position (target out of range), the attitude sensor provides alternative positioning data, enabling seamless transition between positioning methods and maintaining system functionality across all movement ranges.
2Measurement precision
If the system relies solely on camera imaging, then position calculation accuracy is improved, but continuity of information processing deteriorates when target is out of range
Solution Approach 1:
The system prepares alternative positioning methods (attitude sensor) in advance to cushion against failures in the primary method (camera imaging). When the imaging target moves out of range, the attitude sensor immediately takes over to maintain continuous information processing, preventing any interruption in system operation.
Solution Approach 2:
The system dynamically changes the positioning parameter source based on conditions. When the imaging target is within range, camera-based parameters are used for high accuracy. When the target moves out of range, the system switches to attitude sensor parameters, ensuring continuous operation while adapting to changing conditions.
3Measurement precision
If the system uses only imaging information, then calculation accuracy is improved, but ease of operation deteriorates due to limited movement range
Solution Approach 1:
The input device is designed with multi-functionality, incorporating both camera imaging means for high-precision positioning and attitude sensor means for universal positioning coverage. This allows the device to maintain calculation accuracy through camera imaging when available, while also providing ease of operation through attitude sensor-based positioning when the camera cannot capture the target, thus enabling free movement throughout the entire space.
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
Enables users to perform input operations freely by expanding the range of input device movement, maintaining operability and accuracy through seamless transitions between calculable and incalculable states.
Implementation Method 1
imaging means for capturing predetermined imaging targets
Implementation Method 2
attitude sensor whose detection result indicates a change in position or orientation of the input device
Data Source
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AI summary
An information processing apparatus performs predetermined information processing in accordance with an attitude of an input member having imaging means and an attitude sensor. The information processing apparatus calculates a first position according to the attitude of the input member by using imaging information based on an image including a predetermined imaging target captured by the imaging means. Further, the information processing apparatus calculates a second position according to the attitude of the input member, which position is on a predetermined straight line or a predetermined plane, by using a result of detection of the attitude sensor. When the first position is calculable, the predetermined information processing is performed by using a control position based on at least the first position. When the first position is incalculable, the predetermined information processing is performed by using a control position based on at least the second position.