Fusão de imagens de tomografia por impedância elétrica

Abstract

Electrical impedance tomography (EIT) is a promising, non-invasive and radiation-free technique capable of producing images of the internal impedance distribution of a body in real time. Although it allows the construction of images with high temporal resolution, EIT presents a very limited spatial resolution, when compared with other technologies such as computed tomography (CT) and magnetic resonance imaging (MRI). The present work proposes the search for improvements in the spatial resolution through post-processing the tomographic images. A single similar approach found in the literature proposes the Super-Resolution of the tomographic images, technique known for its high computational cost. In this work, it is proposed the additive fusion of EIT images, which presents computational cost more compatible with real time applications. The results obtained indicate that, due to the nature of the problem of this type of tomography, the additive fusion is able to achieve the Super-Resolution, considerably improving the quality of the tomographic images at a low computational cost when compared to the already consolidated post-processing techniques in the area.(sic)