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Digital Image Processing Applied to Optical Measurements
Alonso Saldaña Heredia
Pedro Antonio Marquez Aguilar
Arturo Molina Ocampo
Álvaro Zamudio Lara
出版
2020
主題
Computers / Information Technology
URL
http://books.google.com.hk/books?id=k_Eg0AEACAAJ&hl=&source=gbs_api
註釋
Digital image processing is a useful tool that improves pictorial information for human interpretation and is mainly used for storage, transmission, and representation of different data. In this chapter, we want to introduce an optical technique which couples physical analysis with image processing for a measurement system. Optical methods were used to obtain the stress-strain relation by different invasive and noninvasive methods. This chapter talks about a novel noninvasive methodology to measure stress-strain evolution; this technique is based upon a single laser beam reflected on the cross section of ductile materials (steel and aluminum) while they are under a compression load. The way we measure one laser beam is by using the Gaussian beam propagation equations; we propose that the reflection area of the laser is going to change as the material surface area is compressed and we analyze these differences by using digital image processing. With this technique we are able to construct a stress-strain diagram.