Adaptive Illuminance Control for Complex Surface Image Capture
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Solution Overview
Problem
Existing computer-aided image analysis of manufactured components is dependent on optimal lighting conditions that vary based on the shape and composition of the component, making reliable illumination methods for image capture challenging.
Innovation Solution
A computing device determines power levels for compensatory light sources based on target illuminances and positions/orientations of surfaces, adjusting the light sources to achieve desired illuminance levels for improved image capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If standard lighting conditions are used for image capture, then the lighting setup is simple and consistent, but the illuminance varies across surfaces with different shapes and orientations, reducing image analysis accuracy
Solution Approach 1:
The patent applies local quality by assigning different power levels to individual compensatory light sources based on their specific spatial relationships with object surfaces. Each light source is independently controlled to provide targeted illumination compensation for specific surface areas with different orientations and distances, ensuring optimal illuminance locally rather than uniform illumination globally.
Solution Approach 2:
The system dynamically adjusts the power levels of compensatory light sources based on real-time calculations of surface positions, orientations, and desired illuminance targets. The lighting configuration changes adaptively rather than being static, allowing the system to respond to variations in object geometry and achieve consistent image quality across diverse surface characteristics.
2Reliability
If compensatory light sources are added to achieve uniform illuminance across different surfaces, then image capture quality improves, but the lighting system complexity and computational requirements increase
Solution Approach 1:
The system employs feedback by using detected surface position and orientation information to calculate appropriate power levels for compensatory light sources. The illuminance targets are determined based on feedback from the object's geometric characteristics, creating a closed-loop control system that adjusts lighting to achieve desired illuminance consistency across varying surface conditions.
Solution Approach 2:
The patent changes the power level parameter of compensatory light sources based on calculated requirements derived from surface geometry and desired illuminance targets. By adjusting this key parameter dynamically, the system achieves reliable and consistent lighting conditions across surfaces with different orientations and distances without requiring physical reconfiguration of the lighting apparatus.
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 solution provides consistent and adaptive lighting for image capture, enhancing the reliability and accuracy of computer-aided defect identification in manufactured components.
Implementation Method 1
determining, via the computing device, power levels for compensatory light sources based on the target illuminances and positions and orientations of the surfaces with respect to the compensatory light sources; and causing, via the computing device, the compensatory light sources to operate according to the power levels
Data Source
AI summary
A method includes receiving, via. a. user interface of a computing device, input indicating target illuminances that correspond to surfaces of an object, determining, via the computing device, power levels for compensatory light sources based on the target illuminances and positions and orientations of the surfaces with respect to the compensatory light sources, and causing, via. the computing device, the compensatory light sources to operate according to the power levels.