Laser Profilometer Noise Compensation for Reliable Surface Analysis
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Solution Overview
Problem
Laser profilometers capture images with interference noise that degrade image quality and reliability, necessitating additional imaging equipment for comprehensive surface analysis.
Innovation Solution
A noise compensation formula is applied to images captured by laser profilometers to mitigate interference noise, enhancing image quality and enabling single-device surface analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single laser profilometer is used for surface inspection, then device complexity is reduced, but image quality deteriorates due to interference noise
Solution Approach 1:
The patent applies a noise compensation formula that converts the harmful interference noise patterns into beneficial information. By analyzing the characteristic sinusoidal noise patterns and applying mathematical compensation, the system transforms what was previously useless or harmful noise into useful signal, enabling reliable surface inspection with a single profilometer without requiring additional imaging equipment.
2Measurement precision
If additional imaging equipment is added to improve image quality, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The laser profilometer performs its own noise compensation using integrated processing capabilities. The system uses the captured image data itself to generate the compensation formula, eliminating the need for separate imaging devices or external noise reduction equipment. The profilometer serves its dual function of both capturing images and removing noise through self-processing.
3Reliability
If noise compensation processing is applied, then image quality is improved, but processing time increases
Solution Approach 1:
The noise compensation formula is applied in real-time during the image processing pipeline, before surface analysis begins. By pre-processing the images to remove noise artifacts, the system prepares clean data for subsequent analysis, preventing noise from interfering with defect detection and measurement operations.
Data Source
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AI summary
A computer-implemented method for compensating interference noise in an image (60) captured with a laser profilometer (10), the method comprising processing (S2) the captured image (60) using a specific noise compensation formula to obtain a processed image (70) with compensated interference noise.