Uso de arquitetura DSP para otimizar o desempenho da reconstrução de imagens tomográficas com wavelets
Abstract
This work presents a system for tomographic image reconstruction using a parallel platform dedicated to the minitomograph scanner for soil science developed by the Embrapa Agricultural lnstrumentation Center. The TMS320C40 was used with two TIM-40 modules and the software was developed by the combination of the Code Composer tool, the Parallel C from 3L, and the Borland C++, v. 4.0. The reconstruction tasks were distributed through the processors and the cache on-chip was used to reduce the miss rate and to increase both the processing power and the system's speed. Results with real tomographic data indicate that this method gives superior results, i.e., approximately 80% when compared to conventional backprojection reconstruction methodology operating at 200 MHz with the classical micro processed architecture.
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