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To the pipeline welding defect detection, robot tracking weld reliably, the welds original image acquired by visual sensor need pretreatment to eliminate the impact of noise. A pipeline welding machine vision detection system proposed in this paper. With the help of embedded computer and takes full use of the traditional ultrasonic-testing device, FPGA, USB, electronic technology and wavelet transform...
This paper aims to develop a quantitative model for hardware evaluation in terms of GreenIT metrics compliance during operation. The framework for data acquisition from Web content mining uses Web crawlers as well as software information agents that automatically indentify and index the environmental metrics present in products' specifications.
A new filtering algorithm for removing salt-and-pepper noise from gradation images was introduced. Eight directional templates and one nondirectional template were selected to smooth gray-scale images. First to judge which templates the pending pixel should belong to according to compatibility and similitude principle, then using the corresponding template to smooth the pending pixel.The salt-and-pepper...
The paper deals with two recently developed, high-precision nuclear measurement systems installed at the VVER-440 units of the Hungarian Paks NPP. Both developments were motivated by the reactor power increase to 108%, and by the planned plant service time extension. The first part describes the RMR start-up reactivity measurement system with advanced services. High-precision picoampere meters were...
Handwriting identification is one of the most important branches of computer vision and pattern recognition, and an effective means of identification that is important for surveillance and security, telecommunications, digital libraries, video meeting, and human-computer intelligent interactions. A deep research on pre-processing of Chinese handwriting identification is conducted in this paper. Computer...
The purpose of this research is to use an FLC (fuzzy logic controller) to manage the power consumption of a notebook or an UMPC (ultra mobile PC). The FLC not only controls the LCD backlight and the speed of the fan to reduce the power consumption but also lengthens the battery recharge cycle. The EC (embedded controller) in a notebook is a device to assist the onboard power management system which...
Leakage accidents in oil transmission pipelines not only cause loss of material, but also bring about hidden troubles for people's property and the environment. Pipeline leakage accidents occur frequently in recent years, particularly in those developing countries, and most of which were done destructively. Negative pressure wave technique is an effective method for paroxysmal oil leakage detection...
After using unlabeled samples to assist training, the classifier based on semi-supervised learning sometimes not only can not improve its generalization ability, but also get a degradation of performance for the introduction of too many noise samples. To overcome this disadvantage, a new algorithm called co-training semi-supervised active learning based on noise filter is presented in this paper....
With the aging population and increased need to care for the elderly there are fewer of the younger generation to administer the necessary care and supervision. This condition is one of the reasons many researchers devote their time in evolving smart homes. These homes offer the occupant(s) a level of convenience not seen in traditional homes by using technology to create an environment that is aware...
In order to improve the efficiency and reliability of the ultrasonic-testing, a type of ultrasonic-testing instrument of high ratio of performance to cost is developed successfully. With the help of embedded computer and takes full use of the traditional ultrasonic-testing device, FPGA (field programmable gates array), USB, electronic technology and wavelet transform signal processing; the system...
This paper give an overview on hidden data in a different carrier, in particular the paper overview different technique for steganography and giving a brief explain about each one, in order to implements stego-analysis system. This paper highlight the weakness of the hidden data technique (disadvantage, weak point, type of attacker, stage of attacking the massage, ..etc). This paper also appoint the...
Mathematical language was developed by mathematicians in order to facilitate mathematical knowledge communication. It will be more interesting if we can use the same language for the human-machine communication. This requires an adequate representation, manipulation and recognition of the two dimensional structure of mathematical notation between human and machine. In this paper, we try to define,...
This paper presents an analysis of the network traffic generated by different interactive digital television applications using PLC as return channel on the context of SAMBA project. The analysis is conducted through the evaluation of performance of PLC compared to traditional IP network. The setup considers usual PLC network with presence of noise generated by electrical devices. It was evaluated...
The Federal Communications Commission (FCC) opened free "white space" spectrum on November 4, 2008. In this way, Google and other technology companies that wanted access to more free spectrum have gotten their wish. The prerequisite of the access to the free spectrum is to find this kind of spectrum. This paper deals with spectrum sensing and spectrum reconstruction under the umbrella of...
In this paper we represent our study of the generation of submillimeter waves and noise in GaN based device. The structure is the HFET of GaN and AlxGa1-xN. It has been shown that though the usual Gunn effect is weak due to the short length of the sample yet the generation of high frequency in the millimeter and submillimeter band is not impossible. Low frequency flicker noise is also investigated...
In our approach, we propose to process the mean arterial pressure recordings like a signal but yet do analysis like an image in order to differentiate recordings from patients using pressors to treat their acute hypotension and from patients with no such conditions. Mean arterial pressure values recorded over time is numerical representations over time and hence signal processing techniques can be...
A general purpose CCD controller that can address any CCD, has been developed at the Indian Institute of Astrophysics. It is based on a Digital Signal Processor (DSP) chip, Motorola DSP 56002 for implementing essential operations such as read-out of the CCD, interfacing with the host and correlated double sampling for reset noise elimination. In order to reduce the chip count and size of the controller...
Estimation of retransmission timeout (RTO) in TCP networks is important in order to maximize throughput. If the RTO is too small, packets will be unnecessarily declared lost, thus resulting in a retransmission. If RTO is too large, applications will wait too long before declaring a packet to be lost, thus reducing throughput. The conventional method due to Karn and Jacobson for estimating RTO is using...
Directing to the inconsistency of the fault diagnosis information, a method of the rules extraction for fault diagnosis based on rough set theory and decision network is proposed. The fault diagnosis decision system attributes are reduced through discernibility matrix and discernibility function firstly, and then a decision network with different reduced levels is constructed. Initialize the network's...
We describe whiteboard content capture system from Presentations Automatically Organized from Lectures(PAOL) that captures content within the setting of a classroom environment. The system acquires a sequence of images from high-resolution, fixed view cameras and extracts a series of content-rich key frames. The key frames are derived by analyzing the camera images of the front of the room, selecting...
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