As a fundamental image processing block, morphological processing involves intensive computation and contributes significantly to an image processing system overhead. Depending on only spatially local data, several morphological operations can be implemented with parallel hardware to reduce the computation overhead. In this paper, we implement morphological image operations, which include dilat...

This paper presents a technique for clock multiplication without local oscillators. This technique uses a DLL, thus presenting lower jitter than traditional PLL-based oscillator systems. Furthermore, it provides directly 50% duty-cycle clocks. This method is implemented both in a programmable custom circuit able to perform clock multiplication with integer factors from 2 to 8, and in a simpler ...

This paper presents our ongoing work on the analysis and optimization of cryptanalytic time-memory tradeoffs targeting the COPACOBANA architecture [KPP06] as platform for the precomputation/online phase.

Low latency, application, specific multipliers are required fo r m,any DSP algorithms. Tree multipliers are an obvious answer to this requirement. However, tree architectures have not been considered for automatic multiplier generation because they have been conszdered to be irregular. I n this paper, a recursive methodology f o r generating n-2 compressors (for n in the range 3 5 n 5 64) using...

An imbedded language system for the hyout of VLSI circuits is examined. It is shown that through the judicious use of this system, a large variety of circuits can be designed with circuit density and performance comparable to traditional full-custom design methods, but with design costs more comparable to semi-custom design methods, The high performance of this methodology is attributable to th...

Rio de Janeiro’s Integrated Command and Control Center (CICC-RJ ) has already seen duty in several large scale events which happened in town, some planned, others not. CICC-RJ is part of Rio de Janeiro state’s response to the Brazilian national government’s mandate to improve the state’s ability to anticipate and respond coherently to public safety events in the region. Its infrastructure is in...

A rare case of local recurrence of a high-grade osteosarcoma of the pelvis is described, 19 years after initial presentation, highlighting the need for continued long-term follow-up of patients with osteosarcoma. We review the literature concerning osteosarcoma of the pelvis, local recurrence and treatment with custom-made hemipelvic replacements.