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The widespread popularity of the smartphone and the increasing integrated sensors, make it possible to provide the location-based service for anyone at anytime, anywhere. The pedestrian location based on the smartphone becomes a kind of wonderful solution for indoor/outdoor positioning. A smartphone fusion location method optimized by the indoor/outdoor detection is proposed in this paper. The light...
For accurate error estimation, a stereo reconstruction error analysis method for spatial circle is presented. The error estimation model is proposed based on error transfer analysis. The error expressions are derived in the processes of calibration, matching and reconstruction. Then, the reconstruction error estimation model of spatial circle is established. A method of estimating the reconstruction...
We study the effectiveness of using convolutional neural networks (CNNs) to automatically detect abnormal heart and lung sounds and classify them into different classes in this paper. Heart and respiratory diseases have been affecting humankind for a long time. An effective and automatic diagnostic method is highly attractive since it can help discover potential threat at the early stage, even at...
The popularization of smartphone and continuous upgrading of configuration make the 4A target (anytime, anywhere, anybody and anything) for location service become possible. Pedestrian navigation based on smartphone is an ideal solution for indoor and outdoor seamless positioning. Mobile navigation electronic map is the basis of pedestrian navigation. A smartphone seamless positioning system based...
To address the problem of low precision and easy divergence of the intelligent mobile phone sensors, a dual IMU we able mobile seamless navigation and positioning system based on Bluetooth technology is proposed. The whole system is divided into foot inertial data acquisition module (IMU), mobile phone self-contained sensor data acquisition module (IMU) and mobile phone positioning module for navigation...
The minimum spanning tree stereo matching algorithm only takes one channel of R, G, B channels into account, ignoring the effect of the other two channels on the final edge weight in color image. This paper proposes an improved minimum spanning tree stereo matching algorithm, which calculates the weighted euclidean distance using a three-channel approach, and combines three-channel edge weight. This...
In this paper, a composite control scheme is developed for the automotive Steer-By-Wire (SBW) system. According to the equivalent second-order SBW system from the steering motor to the steered front wheels, a composite controller combining the proportional-derivative (PD) controller and the feed-forward compensation together can be designed, in the sense that the front wheel steering angle can converge...
Stereo matching is an important research topic in the field of stereo vision. According to the stereo matching information, stereo matching algorithms can be divided into local, global, and semi-global algorithms. This paper summarizes the advantages and shortcomings of these matching algorithms. An experimental platform is set up for health care, and some matching algorithms are tested. Experimental...
Based on the complexity in military information systems architecture design, we proposed the concepts of architecture optimization design. After analyzed application of logical data meta-model (DM2) in building architecture data and products, we built a framework of architecture optimization design. Combined with the building sequence and designing guidelines of architecture data and products, we...
With the development of cloud computing and mobile Internet, the issues related to big data have been concerned by both academe and industry. Based on the analysis of the existed work, the research progress of how to use distributed file system to meet the challenge in storing big data is expatiated, including four key techniques: storage of small files, load balancing, copy consistency, and de-duplication...
Due to the characteristics of wireless mesh networks (WMNs) in terms of topology, transmission link and traffic, the conventional layered protocol design methods for wired networks can not guarantee the performance for WMNs. To reach a tradeoff between the efficiency of radio resources and QoS requirements such as high throughput and low delay, it is required to explore the new design method for WMNs...
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