This paper presents a new scheme for positioning and tracking mobile nodes based on adaptive weighted interpolation alpha-beta (alpha-beta) filtering in wireless sensor networks. The proposed method formulates location estimation as least squares problem, which can be solved an iterative, decentralized manner. With such estimated information, algorithm is further employed at central processor to improve the accuracy. As compared with Kalman approach, achieves reasonably good performance much...

This paper presents algorithms for calibrating and tracking the location of a mobile terminal based on radio propagation modeling (RPM) Kalman filtering indoor wireless local area networks (WLANs). In this filter-based (KF-based) algorithm, observed information is extracted from empirical RPM positioning methods. Not only can proposed algorithm calibrate change different environmental conditions in real dynamic environment but also KF-based reduce error with smaller sampling time vanquish...

In this paper, we present a positioning and tracking scheme based on adaptive weighted interpolation Kalman filtering for wireless sensor networks. The proposed method formulates location estimation as least squares problem by taking weights the reliability of distance estimation. This can be realized in an iterative, decentralized manner to improve both bandwidth energy efficiencies. To accuracy, filter is employed at central server track variations estimate computed from method. As...

Providing a customer with tailored location-based services (LBSs) is fundamental problem. For location-estimation techniques radio-based measurements, LBS applications are widely available for mobile devices (MDs), such as smartphones, enabling users to run multi-task applications. information not only enables obtaining the current location of an MD but also pro- vides real-time push-pull communication service. indoor environments, localization technologies based on radio frequency (RF)...

Bluetooth Low Energy (BLE) is a positioning technology that commonly used in indoor systems (IPS) such as shopping malls or underground parking lots, because of its low power consumption and the cost devices. It also maintains high accuracy. Since BLE itself low, it has now been larger environments lots for long time. However, necessary to configure large number devices environment obtain accurate results. The most method using signal strength pattern-matching method. result compared through...

Global positioning systems, widely known as GPSs, provide timing, navigation, and signals to military civilian users. When a GPS receiver receives satellite signals, the distance between user is first calculated, then user's current position located using triangulation method. However, there possibility that atmospheric conditions, multipath fading, shadowing effects could have an impact on signal. As wireless technology has progressed, different locations locating systems been invented,...

We proposed a novel chroma upsampling scheme for YCbCr 420 videos. In state-of-the-art work, the is performed by simply duplicating stored U and V values in 4 copies saving to corresponding locations 444. method, instead of directly copying current values, we consider their neighboring as weights redistribute total energy. The experimental results show that method better than state-of the-art all tested videos terms CPSNR; average gain 0.13 dB.

In this paper, a new color image compression algorithm based on Absolute Moment Block Truncation Coding (AMBTC) and entropy coding is proposed. The AMBTC improves the performance of (BTC) obviously. A novel technique by using eight different types bitmap tables developed for proposed algorithm. addition, an combining prediction Huffman approach included in decreased data amount luminance images. experimental results show that more than 82% can be compressed tables. Compared with previous...

In this paper, a tracking scheme based on adaptive weighted technique is proposed to reduce the computational load of traditional data-fusion algorithm for heterogeneous measurements. For location-estimation with data fusion radio-based ranging measurement and speed-based sensing measurement, Bayesian approach handled by state space model; reliability message passing error propagation law. As compared Kalman filtering approach, that combines radio speed has much lower complexity acceptable...

A wearable, wireless, multi-sensor module for long-term, continuous physiological signal monitoring is presented in this paper. The wireless monitor module, called a "tag", attached to wrist and fingertip skin temperature beat-to-beat pulsation respectively, the data sent host computer, "reader", via radio-frequency transmitter. Two major design issues are addressed: one combine two sensors tag, other develop low power consumption ASIC. It was verified through experiments that tag can both...

This study presents an efficient location tracking algorithm to reduce the computational complexity of conventional Kalman filtering algorithm. In proposed estimation and approach, using inherent message‐passing nature factor graphs, data information is passed efficiently between variable nodes by taking weights based on message reliability, thus simplifying implementation Bayesian approach for tracking. Numerical simulations experimental results show that scheme not only can achieve...

Abstract Location‐based services (LBSs) in such indoor places as museums, airport terminals, and train stations are becoming more popular among smartphone users. Hence, the research on positioning technologies is increasing. Indoor using Wi‐Fi or Bluetooth wireless signals have some problems that cannot be overcome, for example, inconsistent data caused by human body shadowing effects. Positioning accuracy stability still need to improved provide higher quality LBS applications. Smartphones...

H.264 coding technology is the most commonly-used video compression technology. As videos in transmission, packet losses inevitably occur. The error concealment method can solve problem. For lost block, we use motion vector of neighboring available block to estimate vectors, and estimates propagate predict all other missing vectors. By comparison against state-of-the-art method, proposed algorithm increases average PSNR by 1.93 dB on average.

This article puts forward a low-complexity filtering algorithm to achieve chip design for real-time location tracking. In order meet the need and real-time, positioning tracking based on Kalman Filter (KF) is proposed. The KF itself has functions of tracking, predicting, etc., which can correct into more accurate results. However, in calculation algorithms, each iteration often requires tedious complex calculations Gain (KG). Both software hardware are very resource-intensive. Therefore, use...

This article presents location-estimation algorithm based on tracking for indoor dynamic environments. Wireless positioning techniques have gained more popularity in recent years. There are many approaches systems, such as received signal strength (RSS), angle of arrival, time and difference arrival. In terms by trilateration technique to determine the location mobile devices, this illustrates concept measured range extract from arrival approaches. Then an easy geometric is applied....

In recent years, wireless communication applications have been widely used in various industries, such as the popularity of smart phones, large-scale cloud computing platforms, and Internet Things (IoT) cities. Positioning techniques made great progress terms positioning accuracy usability. These approaches gradually infiltrate all aspects social life from areas navigation, aerospace, aviation, military, natural disaster prevention. Namely, these become an indispensable important daily life,...

Human's facial expressions are related to the position of features. In this paper, we use Supervised Descent Method find features which converges several times by a template and can let feature points be on right place. After getting all points, out relationship between these expressions. At meanwhile, also need neutral face users used as basis for identification.

With the rapid development of wireless communication systems and various emerging applications, software implementations could not satisfy real-time applications location-based services (LBS). This article presents a three-dimensional (3D) localization algorithms based on positioning tracking approaches. The proposed approaches are implemented with field programmable gate arrays (FPGAs). hardware implementation FPGA-based can improve traditional matrix operation approaches, it has advantages...

Key words: dead reckoning

Due to the rapid development of wireless communication applications, software implementations cannot fulfill real-time computing satisfy in-time requirement location-based services (LBS) applications. This article presents a location-estimation technique based on positioning and tracking algorithms, high-performance algorithms are implemented in field programmable gate array (FPGA) approaches, which have features pipeline structure processing. In terms FPGA our results demonstrate that...