Amilcar do Carmo Lucas

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Digital film processing is characterized by a resolution of at least 2 K (2048 × 1536 pixels per frame at 30 bit/pixel and 24 pictures/s, data rate of 2.2 Gbit/s); higher resolutions of 4 K (8.8 Gbit/s) and even 8 K (35.2 Gbit/s) are on their way. Real-time processing at this data rate is beyond the scope of today's standard and DSP processors, and ASICs(More)
The challenges posed by complex real-time digital image processing at high resolutions cannot be met by current state-of-the-art general-purpose or DSP processors, due to the lack of processing power. On the other hand, large arrays of FPGA-based accelerators are too inefficient to cover the needs of cost sensitive professional markets. We present a new(More)
Digital film processing is characterized by a resolution of at least 2K (2048x1536 pixels per frame at 30 bit/pixel and 24 pictures/s, data rate of 2.2 Gbit/s); higher resolutions of 4K (8.8 Gbit/s) and even 8K (35.2 Gbit/s) are on their way. Real-time processing at this data rate is beyond the scope of today's standard and DSP processors, and ASICs are not(More)
This paper presents a multi-board, multi-FPGA hard-ware/software architecture, for computation intensive, high resolution (2048x2048 pixels), real-time (24 frames per second) digital film processing. It is based on Xilinx Virtex-II Pro FPGAs, large SDRAM memories for multiple frame storage and a PCI express communication network. The architecture reaches(More)
The evaluation of drug abuse in a defined population was performed through toxicological hair analysis. Hair samples from university students ranging from 18 to 25 years of age were anonymously collected and screened for cocaine, amphetamines and cannabinoids by radioimmunoassay (RIA). Positive results (cut-off values adopted were 2 ng/mg for cocaine and(More)
Correlation between tinnitus and audiometric loss, modification of tinnitus by medical or surgical treatment, allow to suspect the origin of tinnitus due to otospongiosis and to give the patient a practically always confirmed prognosis. Audiometric localization of tinnitus is essential, as it is the best clue to etiology, treatment and prognosis of(More)
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