An image is represented by the Voronoi tessellation generated from selected sampling points. Using a multiresolution approach, the density of the sampling points can be adaptive to image properties: smoother regions will have fewer sampling points than more detailed regions. The adaptation property results in better image quality than non-adaptive Voronoi representations, while preserving the p...

Abstract Specialized hardware implemented on field programmable gate array (FPGA) is used to simulate critical 2D Ising lattices up 4096 2 . Four mainstream, high-quality pseudorandom number generators (PRNGs) including Xorshift , Mersenne Twister Xorwow and ALFG are tested this system, three of them found misbehave with different degree confidence levels. It observed that PRNGs quality issues ...

Particle matter is one of the criteria air pollutants which have most considerable effect on human health in cities. Its legislation and regulation are mostly based mass. We showed here that total number particles particle concentrations different size fractions seem to be efficient quantities for quality monitoring urbanized areas. concentration (N) measurements were realized Budapest, Hungary...

Abstract We reverse-engineer, test and analyse hardware firmware of the commercial quantum-optical random number generator Quantis from ID Quantique. show that $>99\%$ > 99 % its output data originates in physically processes: timing photon absorption a semiconductor ma...