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A Methodology for Laser Speckle Simulation in Controlled Dynamic Processes

Bento, L. ; Távora, L.M. ; Assunção, P.A. ; Cunha, F. ; Pinto, R. ; Faria, S.M.M.

A Methodology for Laser Speckle Simulation in Controlled Dynamic Processes, Proc IEEE International Convention on Information and Communication Technology, Electronics and Microelectronics MIPRO, Conference Online, Vol. 1, pp. 326 - 329, May, 2019.

Digital Object Identifier: 10.23919/MIPRO.2019.8756855

The use of coherent light in imaging is the basis of several technologies that extends from nanotechnology, biomedicine, structural biology to metrology. Regarding laser speckle imaging in health-related conditions, in recent years several applications have been developed, emphasizing the potential of laser speckle as a functional imaging methodology, either used as individual methodology or in a multimodal imaging scheme. To assess distinct acquisition methodologies, several experimental protocols have been tested, but also new activity descriptors have been developed. These image processing derived descriptors are core to the speckle characterization in dynamic physiological conditions. Accordingly, the use of computer simulation algorithms to obtain the phenomena, avoiding acquisition noise is a research topic with great interest among the community, as a way to test the descriptors performance in a controlled way. In this work, a methodology for laser speckle simulation of dynamic processes is presented. The proposed algorithm allows controlling the way the process varies by setting a linear, quadratic, sinusoidal or mix behaviors, during the simulation period.