Projected Image Pointer Tracking with Origin Setting Calibration
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Solution Overview
Problem
Existing technologies face challenges in accurately detecting the instruction position of an indicator in a projected image, particularly in systems that combine optical and motion detection sub-systems, leading to inefficiencies in setting and tracking the origin of the instruction position.
Innovation Solution
An instruction position detection device and method that utilize a processor to acquire movement data from an indicator, project a setting image for setting the origin, and detect the instruction position based on the acquired movement data and input results, enabling precise detection of the indicator's position within the projected image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a hybrid tracking system combining optical and motion detection sub-systems is used, then the instruction position detection capability is improved, but the device complexity increases
Solution Approach 1:
The patent combines optical tracking (imaging apparatus capturing marker positions) and motion detection (acceleration sensors detecting indicator movement) into a unified hybrid tracking system. The processor integrates data from both sub-systems to calculate instruction positions, achieving high detection accuracy while managing system complexity through coordinated operation of multiple components.
Solution Approach 2:
The imaging apparatus serves multiple functions: capturing images for optical tracking of markers, providing projection functionality for displaying images, and enabling both detection and interaction capabilities within a single device, thereby reducing the need for separate specialized components.
2Measurement precision
If additional imaging apparatus is used to detect instruction position, then detection accuracy is improved, but manufacturing cost increases
Solution Approach 1:
The projection apparatus is designed to perform dual functions as both the projection device and the imaging apparatus for detection. This eliminates the need for separate imaging devices, reducing component count and manufacturing costs while maintaining detection capability through the projection apparatus's imaging functionality.
Solution Approach 2:
The detection and projection functions are merged into a single integrated apparatus. The same device that projects images also captures images for tracking, consolidating hardware resources and reducing overall system cost while achieving accurate instruction position detection through coordinated operation.
Data Source
AI summary
An instruction position detection device includes: a processor that acquires a movement amount of an instruction position of an indicator capable of detecting the movement amount, and performs a control of projecting, from a projection apparatus, an image including a setting image for setting an origin of the instruction position of the indicator, and the processor is configured to: acquire an input result of a setting operation of an operator in a state where an instruction for a position indicated by the setting image in a projected projection image is provided by the indicator; and perform a control of detecting the instruction position of the indicator in the image based on the position of the setting image in the image and the movement amount after the input result of the setting operation is acquired.