Browsing by Author "Acevedo, C"
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- ItemA simple technique for the autocalibration of stereo systems using the fundamental matrix(CAMBRIDGE UNIV PRESS, 2004) Acevedo, C; Guesalaga, AThis paper presents a method of autocalibrating a stereo system using the full parameterization of the fundamental matrix. The technique is an improvement of classical autocalibration methods that use corresponding points and it is aimed to reduce the number of processes required to achieve a satisfactory calibration. An analysis of the matching points used in the calibration process is carried Out in order to select them based upon their quality or reliability. Using, this technique. a significant reduction of the convergence errors in the calibration process is obtained.
- ItemThe long-term reinfection rate and the course of duodenal ulcer disease after eradication of Helicobacter pylori in a developing country(2000) Rollan, A; Giancaspero, R; Fuster, F; Acevedo, C; Figueroa, C; Hola, K; Schulz, M; Duarte, IOBJECTIVE: The aim of this study was to evaluate the effect of Helicobacter pylori (H. pylori) eradication on the natural history of duodenal ulcer disease and the reinfection rate after treatment in a developing country.