Three-dimensional (3-D) plane segmentation has been and continues to be a challenge in 3-D point cloud processing. The current methods typically focus on the planar subsets separation but ignore requirement of precise fitting. We propose quasi-a-contrario theory-based algorithm, which is capable dealing with clouds severe noise level, low density, high complexity robustly. main proposition that...

Bloom Filters are widely used in many applications including database management systems. With a certain allowable error rate, this data structure provides an efficient solution for membership queries. The error rate is inversely proportional to the size of the Bloom filter. Currently, Bloom filters are stored in main memory because the low locality of operations makes them impractical on secon...

Traceback schemes have been proposed to trace the sources of attacks that usually hide by spoofing their IP addresses. Among these methods, schemes using packet logging can achieve single-packet traceback. But packet logging demands high storage on routers and therefore makes IP traceback impractical. For lower storage requirement, packet logging and packet marking are fused to make hybrid sing...

Generally, the intruder must perform several actions, organized in an intrusion scenario, to achieve his or her malicious objective. We argue that intrusion scenarios can be modelled as a planning process and we suggest modelling a malicious objective as an attempt to violate a given security requirement. Our proposal is then to extend the definition of attack correlation presented in [CM02] to...

The RADAR is the basic requirement of anti-collision system hence many type of RADAR has been already proposed according to its property and requirement of system .Anticollision system use RADAR detection to measure distance to obstacles and obstacles relative speed. Many RADAR antennas were developed but correlation radar is the most recent radar used in Anti-collision system. It’s a bad and e...

This paper presents a theoretic analysis of watermark capacity. First, a simplified watermark scheme is postulated. In the scheme, detection yields a multidimensional vector, in which each dimension is assumed to be i.i.d. (independent and identically distributed) and follow the Gaussian distribution. The major constraint on the capacity is detection reliability, which is one of the most import...

A battery of simple noninvasive tests consisting of directional Doppler ultrasound and carotid phonoangiography has been used to detect carotid stenosis in 700 patients Forty four carotid occlusions in 42 patients were confirmed on angiography, and this study examines the accuracy of this noninvasive battery in predicting the presence of an occluded internal carotid artery. Although the sensiti...