Nowadays,driving fatigue is one of the most important underlying causes of traffic safety. In order to pursue automotive driving safety,an image capture and processing system based on a high-speed digital signal proce...
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Nowadays,driving fatigue is one of the most important underlying causes of traffic safety. In order to pursue automotive driving safety,an image capture and processing system based on a high-speed digital signal processor DSP is proposed. The hardware compositions and software flow of the system are designed based on the analysis of the structure,working principle and the requirements include non-contact,real time and all-weather of an automated early warning system for driving fatigue;to achieve real-time processing of face images,cascade classifiers and gentleboost-based strong classifiers based on MBLBP features are used. An automated early warning system for driving fatigue based on DSP is designed and it can well complete real-time image capture and processing.
Neural network (NN) classification has found wide use in remote sensing applications. There are a large number of ANN types available, and each focus on improving different classification performance. The conjugate gr...
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Neural network (NN) classification has found wide use in remote sensing applications. There are a large number of ANN types available, and each focus on improving different classification performance. The conjugate gradient method is one of the efficient and low memory requirement methods. In this paper, a neural network using conjugate gradient method classifier is employed to classify three components derived by using principal component analysis to original six bands Landsat TM images. Comparison with a conventional classifier shows this NN performs better in both visualization inspection and quantitative evaluation.
For single digital signal processing system can not meet the requirement of real-time,fault-tolerance and reliability for the multitasking signal processing and multi-channel process control.A kind of distributed adju...
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For single digital signal processing system can not meet the requirement of real-time,fault-tolerance and reliability for the multitasking signal processing and multi-channel process control.A kind of distributed adjustment control system based on DSP is designed,using the distributed system realized multiple DSP parallel processing,and also realized cooperative control of DSP and PC data *** the paper,the whole system structure,USB communication with CAN convert units,DSP data acquisition and processing unit,DSP data acquisition and processing module were discuss in *** design of the control system meets the requirement for multitasking and real-time *** can be applied to the industrial process such as liquid level,flow,pressure,and temperature and humidity control.
In this paper, we propose a novel dynamic external force for snakes named dynamic directional convolution vector field (DDCVF). It makes use of the gradients of gray-level images and defines positive and negative boun...
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In this paper, we propose a novel dynamic external force for snakes named dynamic directional convolution vector field (DDCVF). It makes use of the gradients of gray-level images and defines positive and negative boundaries in horizontal and vertical directions, respectively. Furthermore, DDCVF is calculated by convolving the user-defined vector field kernel with the edge map generated from the image in the two directions separately. Experimental results show that the DDCVF snake has a large capture range and better robustness to disturbance and initialization.
Access control and management of organization- role are the keys to workflow system. A new role-based access control model, OE-RBAC, which extends the concept of role and organization and is based on RBAC model, is pr...
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Access control and management of organization- role are the keys to workflow system. A new role-based access control model, OE-RBAC, which extends the concept of role and organization and is based on RBAC model, is proposed. Organization information and roles are managed uniformly in the new model. This mechanism enables the organizations and roles to have the same authority to assign permissions, and enhances the organization-role management of workflow. The model provides the mechanism of uniform management of hierarchical organization-role, which makes the application more suitable for large-scale deployment.
In this article,several typical SNR estimation algorithms are analyzed,and according to the characteristics of cable channel,an improved algorithm is put forward based on the channel differentia SNR estimation *** res...
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In this article,several typical SNR estimation algorithms are analyzed,and according to the characteristics of cable channel,an improved algorithm is put forward based on the channel differentia SNR estimation *** results show that the improved algorithm has improved the estimation precision effectively,and this SNR estimation algorithm can be applied for OFDM systems of cable channel.
The development of Internet of Things(IoT) will bring a new ubiquitous computing and communication era. Due to the lack of security mechanisms in the early Internet, we had to build patches to improve the security of ...
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The development of Internet of Things(IoT) will bring a new ubiquitous computing and communication era. Due to the lack of security mechanisms in the early Internet, we had to build patches to improve the security of it, which leads to that the Internet security is always a big risk. To avoid the same thing happened in building IoT, the security of IoT should be systematically studied from the beginning design of the IoT. In this paper, based on the studies on the IoT architecture and the analysis on the secure threats in IoT, the security architecture of the IoT is presented on the basis of the secure architecture of the information system, the related secure problems in the IoT are analyzed from the aspect of the secure service, secure domain and network layer. In addition, the limitation and the hardness work for the future are pointed out in this field.
In this paper, a new idea on the enterprise relative diathesis evaluation approach has been proposed based on the other evaluation theory and approach, which is based on balanced scorecard and together with diathesis-...
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In this paper, a new idea on the enterprise relative diathesis evaluation approach has been proposed based on the other evaluation theory and approach, which is based on balanced scorecard and together with diathesis-decided dynamic principle, and thus combined the operation surroundings with the enterprise relative diathesis evaluation effectively. Then the evaluation model is proposed with the weighted-numbers decided by the entropy. In the last, a positive research about information public listed corporation has been employed during 2000 through 2006, and illustrating the application of relative diathesis evaluation model.
In recent years, frames have been the focus of active research, both in theory and applications. The concept of a special class of frames for subspace of L2 （ R ） is introduced. The notion of a generalized multireso...
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In recent years, frames have been the focus of active research, both in theory and applications. The concept of a special class of frames for subspace of L2 （ R ） is introduced. The notion of a generalized multiresolution structure （GMRS） is proposed. A novel approach for constructing one GMRS of Paley-Wiener subspaces of L2 （ R ） is presented. The sufficient condition for the existence of a class of multiple pseudoframes with refinable functions is developed by virtue of a generalized multiresolution structure. An information fusion approach based on a sort of subspace pseudoframes with arbitrary real translational constant is established.
The determination of particle size distribution(PSD) deals with ill-posed problems in dynamic light scattering(DLS) technique and small perturbation in measured data will cause serious errors in recovered *** this pap...
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The determination of particle size distribution(PSD) deals with ill-posed problems in dynamic light scattering(DLS) technique and small perturbation in measured data will cause serious errors in recovered *** this paper,we proposed a modified technique which solves the second order correlation function *** results show that this technique significantly reduced the inversion errors.
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