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Camera and laser rangefinder (LRF) are widely used in various mobilized systems, such as intelligent vehicle, autonomous robot, etc. And extrinsic calibration is essential and basically the first step to integrate image and 3D LIDAR data. This paper presents a flexible method for extrinsic calibration of a pin-hole camera and a 3D Laser Rangefinder (LRF). The method extends the chessboard pattern,...
The burst of Web-based Restful services brings us a number of facilities in our life and work. We are used to take smartphones to access these Web services, like location-based services, weather search, mapping, social networking, et al. On smartphones, we have two options of service consumers, a.k.a, Native apps and Web apps. Despite the platform-independence, Web apps are claimed to provide the...
Managing computation resources in a cost-effective way has become the core competence for a Cloud provider to win over the market because of the "pay-as-you-go" business model. Therefore, VM placement has become more and more important in the research and practices of VM management by determining at what condition and on which physical server a VM should be placed so that the SLA can be...
Many programs access external data sources through generic APIs. The class hierarchy of such a generic API does not reflect the schema of any particular data source, and thus it is hard to clarify what data an API client accesses and how it obtains them. This makes it difficult to maintain the API clients. In this paper, we show that the data access of an API client can be recovered through static...
In the past a few years, the Web has undergone a tremendous change towards a highly user-centric environment. Millions of users can participate and collaborate for their own interests and benefits. Service oriented computing and Web services have created great potential opportunities for the users to build their own applications. Then, it is a pressing issue that, the users can compose services without...
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