Optical Tracking Device Exposure Parameter Analysis
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Solution Overview
Problem
Conventional optical tracking devices face operational inefficiencies due to the need to toggle the auto exposure function between identification feature detection and mark detection modes, leading to poor user experience and cumbersome operation.
Innovation Solution
An optical tracking device that utilizes an optical sensor with an auto exposure function and an operation processor to analyze exposure parameter variations, allowing for continuous operation without shutting down the auto exposure function. The device divides the target object's surface into regions with markers, enabling accurate detection and decoding of the target object's movement and attached information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the auto exposure function is shut down to detect dark markers, then the optical sensor can observe grey level variation to determine marker movement, but the operational experience deteriorates and manipulation becomes inconvenient due to mode switching
Solution Approach 1:
The patent changes the detection parameter from grey level variation analysis to exposure parameter variation analysis. By monitoring changes in exposure parameters (such as shutter speed or aperture) rather than relying on grey level analysis, the system can detect marker movement while keeping the auto exposure function enabled, thus maintaining operational convenience while preserving detection precision
Solution Approach 2:
The patent introduces an intermediary detection mechanism where the exposure parameter serves as a mediator between the optical sensor and the marker detection. Instead of directly analyzing grey level variations which require auto exposure shutdown, the system uses exposure parameter variations as an intermediate signal that indicates marker presence and movement, allowing continuous operation
2Adaptability or versatility
If the auto exposure function is toggled between identification feature detection mode and mark detection mode, then the optical sensor can adapt to different detection requirements, but the device complexity increases and operational efficiency decreases
Solution Approach 1:
The patent makes the optical sensor system universal by enabling it to perform both identification feature detection and marker detection functions simultaneously through a single detection mode. The system uses exposure parameter variation analysis to detect markers while maintaining the ability to identify features, eliminating the need for separate detection modes and improving operational efficiency
Solution Approach 2:
The patent merges the identification feature detection function and marker detection function into a single unified detection process. By combining both functions into one mode that analyzes exposure parameter variations, the system eliminates the need to toggle between separate modes, thereby reducing operational steps and improving efficiency while maintaining versatility
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
The optical tracking device achieves accurate detection of the target object's movement and attached information by analyzing exposure parameter variations, enhancing operational efficiency and user experience without the need to toggle the auto exposure function.
Implementation Method 1
an optical sensor with an auto exposure function and adapted to acquire a detection image containing at least one of the first region and the second region
Data Source
AI summary
An optical tracking device is used to track a target object. An outer surface of the target object is divided into a first region and a second region adjacent to each other, and a marker is disposed on the first region. The optical tracking device includes an optical sensor and an operation processor. The optical sensor has auto exposure function and is adapted to acquire a detection image containing at least one of the first region and the second region. The operation processor is electrically connected to the optical sensor and adapted to analyze variation of an exposure parameter of the auto exposure function for determining whether the first region is appeared in the detection image, so as to acquire an operation datum of the target object.