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The use of optical flow techniques to extract the velocity from the cardiac movement has to take into account the computational inaccuracy raised from the derivative operator over discrete data. This study presents a comparison of three different derivative approaches (two based on linear and other based on non-linear filtering) to find out the best… (More)
—In this paper, we present a Medical Image Visua-lizer (MIV) targeting cardiac SPECT images. The visualizer is built fully on open source image processing and visualization software. The main features of the visualizer are: a semi-automatic procedure for segmenting challenging cardiac images and an implementation of the polar map visualization (Bull's eye… (More)
• Serviços externos, como interpretação de comandos oriundos do módulo, estão de fato disponibilizados.