A Data Correction Method for Evaluating Interference Fringe Contrast Using 8-Bit Web Cameras
| Autor: | I. A. Budagovsky, A. V. Budagovsky, O. N. Budagovskaya |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Accuracy and precision
business.industry Computer science Dynamic range media_common.quotation_subject ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION 8-bit Photodetector Speckle noise Interference (wave propagation) Maxima and minima Contrast (vision) Computer vision Artificial intelligence business Instrumentation media_common |
| Zdroj: | Instruments and Experimental Techniques. 64:408-414 |
| ISSN: | 1608-3180 0020-4412 |
| Popis: | The contrast of an interference pattern during its registration with an 8-bit digital photodetector has been determined and a method for correcting distortions of the extrema of the interference fringes that are caused by speckle noise and the nonlinearity of the camera has been proposed. Frosted glasses were used as test objects to solve the problem. This method allows a significant extension of the dynamic range of the measured extrema, up to 1 : 50 (34 dB) and can be used to analyze interference patterns using low-cost 8-bit webcams with a measurement accuracy at the level of a linear (10–12)-bit converter. |
| Databáze: | OpenAIRE |
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