نتایج جستجو برای: fast digital processing
تعداد نتایج: 969531 فیلتر نتایج به سال:
We present an inexpensive and simple data acquisition platform based on Field Programmable Gate Arrays (FPGAs) designed to acquire and characterize fast digital or analog electrical signals in real time for processing on a generic personal computer. While the instrument was designed for electrical outputs of single-photon detectors and is suited for high photon-counting rates, it can also be us...
Zernike Moments (ZMs) are used in many image processing applications, due to their resistance against various signal processing and geometric attacks. Digital image watermarking is one of those application areas, where ZMs are widely used to insert and extract the watermark bits for digital media authentication. In all the existing ZM based watermarking techniques, magnitude of moments is used ...
The goal of the two year Ground European Network for Earth Science Interoperations-Digital Repositories (GENESI-DR) project was to build an open and seamless access service to Earth science digital repositories for European and world-wide science users. In order to showcase GENESI-DR, one of the developed technology demonstrators focused on fast search, discovery, and access to remotely sensed ...
The availability of fast and reliable Digital Identities is an essential ingredient for the successful implementation of the public-key infrastructure of the Internet. All digital identity schemes must include a method for revoking someone's digital identity in the case that this identity is stolen (or canceled) before its expiration date (similar to the cancelation of a credit-cards in the cas...
Reconstruction of missing or damaged portions of images is an ancient practice used extensively in artwork restoration. Recently, a few digital inpainting models based on the use of partial differential equations have been proposed. Unfortunately, these algorithms are computationally expensive, usually taking a few minutes to restore small portions of an image, which makes them inappropriate fo...
We propose a fast method for generating digital Fresnel holograms based on an interpolated wavefront-recording plane (IWRP) approach. Our method can be divided into two stages. First, a small, virtual IWRP is derived in a computational-free manner. Second, the IWRP is expanded into a Fresnel hologram with a pair of fast Fourier transform processes, which are realized with the graphic processing...
Currently, FPGA (Field Programmable Gate Array) technology is being widely used for accelerator control owing to its fast digital processing capability. We have recently developed a high-speed data acquisition system that combines a commercial FPGA board (ML555) with a fast ADC (ADS5474; 14 bit; maximum sampling rate: 400 MS/s; bandwidth: 1.4 GHz). This system enables direct measurements of 1.3...
This paper describes the analysis procedure applied to the thermal measurements on the rear side of a carbon fibre composite calorimeter with the purpose of reconstructing the energy flux due to an ion beam colliding on the front side. The method is based on the transfer function technique and allows a fast analysis by means of the fast Fourier transform algorithm. Its efficacy has been tested ...
To design the power and area proficient fast speed data path logic systems, the field of very large scale integration (VLSI) is the generally significant area of research where minimize the area and power is the more difficult task. In digital system, mostly adders lie in the crucial paths that affect the whole performance of the system. To perform the fast arithmetic functions in many data pro...
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