Automatic Stage Lighting Tracking with Infrared Marker Feedback
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Solution Overview
Problem
Existing automatic stage lighting tracking systems face limitations due to the need for complex setups, susceptibility to external interference, and inaccuracies in tracking performers who leave the stage or encounter obstacles, requiring manual adjustments and extensive manpower.
Innovation Solution
An automatic stage lighting tracking system utilizing an infrared emitting element, a photographing element, and OpenCV computer vision library with a DMX512 console to detect and track the performer's position, adjusting the illumination direction of the stage light source for precise and interference-resistant tracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If multiple pressure sensors are arranged on the stage to detect target position, then automatic tracking function is achieved, but the system cannot track when performers leave the stage and is interfered by other objects with weight
Solution Approach 1:
The patent replaces the mechanical pressure sensor detection system with an optical detection system using a camera and image processing algorithms. This substitution eliminates the interference from objects with weight and enables tracking of performers who leave the stage, as the system detects visual features rather than physical pressure.
Solution Approach 2:
The patent introduces an emitting element (infrared LED) as an intermediary marker attached to the performer's costume. This marker serves as a reliable visual target for the camera to track, enabling accurate detection of performer position and movement without being affected by physical interference on the stage.
2Extent of automation
If multiple locating base stations are arranged on the stage to detect target position, then automatic tracking is achieved, but the system requires accurate measurement of base station distances and is interfered by obstacles
Solution Approach 1:
The patent replaces the complex wireless communication and distance measurement system with a simple optical imaging system. The camera captures images and the OpenCV library processes them to determine performer position, eliminating the need for locating base stations, microwave modules, and complex distance calculations.
Solution Approach 2:
The patent uses the camera to create a visual copy (image) of the performer and their position on stage. This optical copy is then processed by image recognition algorithms to extract position information, providing a simpler alternative to physical distance measurement between base stations and target.
3Ease of operation
If manual control is used to adjust illumination direction and brightness, then different lighting groups can be controlled by different personnel, but accuracy is poor and a lot of manpower is required
Solution Approach 1:
The patent implements an automated system where the camera and image processing algorithms automatically detect performer position and calculate the required illumination direction. The system self-adjusts the lighting without manual intervention, eliminating the need for multiple personnel while improving accuracy through precise computational determination of lighting parameters.
Solution Approach 2:
The patent establishes a feedback loop where the camera continuously monitors performer position, the OpenCV library processes this information to determine deviation from the current lighting direction, and the system automatically adjusts the illumination accordingly. This closed-loop feedback mechanism ensures high precision lighting control that responds dynamically to performer movement.
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 system enables fully automatic, precise, and interference-resistant tracking of performers with simple operations, enhancing the accuracy and practicality of stage lighting control.
Implementation Method 1
the emitting element is an infrared emitting element for emitting infrared invisible light
Data Source
AI summary
An automatic stage lighting tracking system comprises an emitting element detachably mounted on a target to be tracked, a stage light source element for illuminating the tracked target, an upper computer software having an OpenCV computer vision library and a DMX512 console, and a photographing element for detecting a position of the emitting element and photographing an image of the target, and transmitting the image and position signal to the upper computer software.