A stochastic method is used to optimize white all-semiconductor lamps composed of tree, four, and five primary light-emitting diodes (LEDs) with Gaussian spectra and realistic line widths typical of AlGalnP and AlGaln...
A stochastic method is used to optimize white all-semiconductor lamps composed of tree, four, and five primary light-emitting diodes (LEDs) with Gaussian spectra and realistic line widths typical of AlGalnP and AlGalnP LEDs. Within an optimal set of central wavelengths and relative powers, a trade-off between luminous efficacy and the general color rendering index can be performed. The quadrichromatic all-semiconductor lamp is shown to meet most needs of deluxe general lighting. However, practical implementation of this lamp requires substantial improvement of LEDs in the yellow-green region (~570 nm).
Bounded Model Checking (BMC) is the problem of checking if a model satisfies a temporal property in paths with bounded length k. Propositional SAT-based BMC is conducted in a gradual manner, by solving a series of SAT...
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In this article we want to introduce first the Gabor wavelet network as a model based approach for an effective and efficient object representation. The Gabor wavelet network has several advantages such as invariance ...
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The structure multivector is a new approach for analyzing the local properties of a two-dimensional signal (e.g. image). It combines the classical concepts of the structure tensor and the analytic signal in a new way....
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The dynamic power consumption of a complementary metal-oxide-semiconductor (CMOS) gate driving a resistance-inductance-capacitance (RLC) transmission line is investigated in this paper. The closed-form solution for th...
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This paper reports on an ongoing research project aimed at designing and deploying a COMA Commodity Grid (COG) Kit. The overall goal of this project is to explore how commodity distributed computing technologies and s...
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The dynamic power consumption of a complementary metal-oxide-semiconductor (CMOS) gate driving a resistance-inductance-capacitance (RLC) transmission line is investigated in this paper. The closed-form solution for th...
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The dynamic power consumption of a complementary metal-oxide-semiconductor (CMOS) gate driving a resistance-inductance-capacitance (RLC) transmission line is investigated in this paper. The closed-form solution for the dynamic power has been carried out by a simple time domain model for input impedance of a lossy transmission line, specifically developed to be used in conjunction with MOS macromodels. The proposed solution agrees with circuit simulations within 1% error for a wide range of line parameters, and it demonstrates how power dissipation localized in the wire resistance may be a significant aliquot of the global power consumption.
There is uncertainty in many aspects of image processing and computer vision. Fuzzy set theory and fuzzy logic are ideally suited for dealing with such uncertainty. Image segmentation is an important step in many comp...
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There is uncertainty in many aspects of image processing and computer vision. Fuzzy set theory and fuzzy logic are ideally suited for dealing with such uncertainty. Image segmentation is an important step in many computer vision algorithms, and errors made in this stage will impact all higher-level activities. This paper extends our earlier and on-going work in image-labeled segmentation (E. Montseny and P. Sobrevilla, 1998), wherein methods which incorporate the uncertainty of object and region definition and the faithfulness of the features to represent various objects were considered. To apply our previous system and framework to LADAR (LAser raDAR) images, it has been modified and improved. We have introduced new fuzzy morphological structural elements to eliminate "vertical noise" and false detections, and we have improved the segmentation of the histogram for dealing with problems due to the wide range and variability of gray levels of the elements appearing within these images.
Self-timed adders are widely used since they compute in mean time. Traditionally, in order to achieve very high-speed performance they are realized using dynamic CMOS logic (Domino, DCVSL). However, recent works have ...
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Self-timed adders are widely used since they compute in mean time. Traditionally, in order to achieve very high-speed performance they are realized using dynamic CMOS logic (Domino, DCVSL). However, recent works have demonstrated that efficient self-timed adders can also be realized using fully static CMOS circuits. In this paper, a new high-performance fully static 56-bit self-timed adder is presented. The proposed VLSI implementation uses overlapped execution circuits, which perform their computation by exploiting the initialization time elapsing between two consecutive operations. The new adder realized with AMS 0.6 /spl mu/m CMOS standard-cells shows an average addition time of /spl sim/3.3 ns, requires /spl sim/900000 /spl mu/m/sup 2/ of silicon area and consumes a maximum power of /spl sim/660 mW @300 MHz.
In this paper we present the results of a comparative study of classical and fuzzy filters for image noise reduction. The discussed fuzzy filters are classified, and their performance is compared with classical filter...
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In this paper we present the results of a comparative study of classical and fuzzy filters for image noise reduction. The discussed fuzzy filters are classified, and their performance is compared with classical filters and evaluated by numerical and visual experiments.
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