Using vehicle cameras to automatically assess road weather conditions requires that the road surface first be identified and segmented from the imagery. This is a challenging problem for uncalibrated cameras such as removable dash cams or cell phone cameras, where the location of the road in the image may vary considerably from image to image. Here we show that combining a spatial prior with va...

The opportunistic networks represent a new communication paradigm born from mobile ad hoc networks and delay-tolerant networks. This paradigm is rooted in the application level and builds the network based on the simple concept of connecting nodes to one-hop at a time. This means that nodes in the network are not aware of the destination path, i.e. they just pass the message to the next node. U...

We investigate the performance of the Early Packet Discard(EPD) and the Early Selective Packet Discard(ESPD) scheme that we have previously proposed[12]. In an e ort to reduce the complexity while maintaining good performance, we pick out two special cases of ESPD and compare their performance with that of EPD. For performance evaluation purposes, the e ective throughput and fairness index was ...

In light of the increasing availability of commercial high-resolution imaging sensors, automatic interpretation tools are needed to extract road features. Currently, many approaches for road extraction are available, but it is acknowledged that there is no single method that would be successful in extracting all types of roads from any remotely sensed imagery. In this paper, a novel classificat...

To evaluate the layout adjustment scheme of bus line during subway construction, the method combining quantitative survey and fuzzy aggregation is used. One criterion is transit service level, which considered nonlinear coefficient, line length, transfer distance and average waiting time. Another criterion is traffic impact degree incorporating three factors: saturation degree on work-zone sect...

It is being increasingly understood that the evaluation of computer systems performance must be based on realistic, full applications. Kernel, algorithm, and small-application benchmarks are important for measuring and discussing the performance of individual components of a computer system. However, the complex performance behavior of these components in concert and in the context of a large c...

In recent years, urbanization has developed rapidly, and urban road play a vital role as the premise. Due to good effectiveness of asphalt pavement, which is more popular in road, maintenance demands are also increasing. order make work appropriate, accurate pavement performance evaluation This paper collects data condition Shanghai calculates sub-indexes each section. We use entropy weight met...

The monitoring of the road safety level in Brazil and particularly in its member states traditionally focuses on the available traffic fatality rates. However, this approach does not offer practical suggestions on how to improve road safety. In this context, the usage of Road Safety Performance Indicators (SPIs) is a growing and promising tendency. This research deals with the construction of a...

Recently, the use of linear features for processing remote sensing images has shown its importance in applications. As one of typical linear targets, road is a hot spot of remote sensing image interpretation. Since extracting road by manual processing is too expensive and time consuming, researches based on automatic and semi-automatic have become more and more popular. Such interest is motivat...