The functionality of video surveillance is significantly degraded by the low illumination and poor visibility under the nighttime environment. However, the demand for nighttime surveillance is no less than the daytime...
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ISBN:
(纸本)9781467301596
The functionality of video surveillance is significantly degraded by the low illumination and poor visibility under the nighttime environment. However, the demand for nighttime surveillance is no less than the daytime one because of the high incidence of accidents during night. The Infrared (IR) light source with fixed intensity works for only certain distance, resulting in the defect of underexposure/overexposure due to the object being too far from/close to the light source. In this paper an innovative idea is brought up that we use a multiple intensity IR-illuminator to enhance the effective distance of license plate detection. Based on the stroke width of the license ID, license plates are detected in the images under different illuminations and then the results are integrated into a synthesized high dynamic range image, in which the license plate regions and the background scene can be better visualized. Experimental results show that the proposed approach can effectively enlarge the monitored area in both dept. and width, as well as enhance the security level of nighttime video surveillance.
The world financial crisis has caused a great impact to human beings' daily life. The significant evidence is that the oil price has hit, more than, 90 U.S. according to the report of ministry of economic affairs....
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Online news usually describes various events over multiple topics. Some of them may generate great impact and affection on other events, organizations or people. For example, a bankruptcy news about a big company may ...
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Nowadays the database of an organization is increasing day by day. Sometimes it is necessary to know the behavior of that organization by retrieving the relationships among different attributes of their database. Impl...
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Decidability and complexity of the satisfiability problem for the logics of time intervals have been extensively studied in the last years. Even though most interval logics turn out to be undecidable, meaningful excep...
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Recently directional sensor networks have received a lot of attention. A directional sensor network is composed of many directional sensor nodes. Unlike conventional omnidirectional sensors that always have an omni-an...
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Recently, the concept of indirect associations, a new type of infrequent patterns that indirectly connect two rarely co-occurred items via a frequent item set called "mediator", has been shown its power in c...
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We present a study of extrema-tracking in dynamic environments using Probability Collectives Multi-agent Systems (PCMAS). In contrast to traditional biologically-inspired algorithms, Probability-Collectives (PC) based...
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Clustering plays an important role in data mining as many applications use it as a preprocessing step for data analysis. Traditional clustering focuses on the grouping of similar objects, while two-way co-clustering c...
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In multi-radio multi-channel wireless mesh networks (WMNs), we are interested in how to allocate interference-free and partially overlapping channels to a multicast tree to support multiple high-quality video/audio st...
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