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In this paper, we propose a node density estimation method in intermittently connected mobile ad-hoc networks. We consider situations where mobile nodes do not know location information about their positions. Under the situations, the proposed method estimates the node density using sparsely deployed access points. These access points broadcast inspection packets by mobile nodes relaying. After the...
Aging and declining birthrate is a common problem faced by modern country, a rapid increase in the proportion of elderly people in society, the lack of the human care and health care system of heavy burden is a serious problem, how to solve these problems is one of the goals of the experts need to work. The natural decline in physical function that is associated with aging leads to an increase in...
This research attempts to develop a lightweight shock wave therapy equipment. In platform investigation, the specific characteristics of shock pulse depend on the common electrical stimulation on physical therapy, minimum dimension of the multi-coil accelerator structure and calculate the capacitors discharge energy size for the first single trigger. The combination items with the coil firing check...
Due to the advent of the aging society, homecare is more and more important. In this paper, we design and implement the contactless pulse rate measurement method based on the Android smart TV, which allows the user to measure their pulse rate without requiring of contact sensors. This framework provides a convenient measurement environment for homecare. The results of the experiment show the presenting...
Cloud systems are a popular type of Internet-based computing that provides shared digital resources to computers and other devices on demand. Such systems also allow users uploading and offloading data to the cloud by mobile applications. There are some potential security and privacy concerns using mobile devices since cloud systems are usually in a public domain. This paper presents an efficient...
Mobile devices have become an indispensable part of our live. Hence, to increase the battery life of mobile devices has become a crucial research topic to interdisciplinary fields. In this paper, we propose a subjective-visual-perception-based (SVPB) OLED displays dimming technique to reduce the power consumption when displaying videos on mobile devices. First, we extract the motion vectors (MV) from...
For eons, the human kind has been motivated by art. Art is a method to express the feelings of its creator and usually is a combination of the subject matter and the design in an image. The convolutional neural network is a powerful tool able to extract the key and meaningful features from images. Here we try to use the neural network to extract the features from an art and merge it with the content...
Computer-generated imagery (CGI) is becoming integral to a movie's story and appeal, and even dominates the film's success at box office. Currently the CGI realism is evaluated by post-production supervisors, and few objective realism assessments focus on this area. This paper investigates enhanced feature learning and classifier training for CGI assessment by deep learning. A training-set-selection...
In this paper, we introduce an indoor location estimation method based on the Bluetooth low energy (BLE) beacon. Beacons are advertised at low transmission power level to limit the estimation error. Each beacon point transmits with multiple power levels to increase the utilizing efficiency. We fully take advantage of BLE beacons that are cheap and controllable. Simulation results show that the estimation...
In this paper, we combine Histogram of Oriented Gradients (HOG) and Local Binary Pattern (LBP) in order to detect the cranium and its components; namely, the brain, eyes and mouth. Furthermore, Deformable Part Model (DPM) algorithm is paired with the AdaBoost for training and classification. We use a CT/PET database acquired from the National Biomedical Imaging Archive (NBIA) in order to train and...
We report a FPGA-hardware implementation of a novel Hough-transform (HT) architecture. A DE4 platform with a Stratix-IV FPGA device has been applied to synthesize a complete prototype system. Due to parallelization of the voting procedure, XGA videos can be processed with a frame delay of 5.4 ms at an operating frequency of 200MHz. System suitability for detecting road lanes in automotive applications...
Physical therapy involves exercising and manipulating the body as a cost-effective treatment to improve mobility and relieve pain. In this paper, we developed a system to depend on some defined features from sample exercises and compare with the derived features from repeated exercises. The comparison results will reflect the benefit of these exercises and determine plan treatment for a patient. Experiments...
Image segmentation is an important technique in image processing. It be used for separating the objects or foreground from the background. This paper focuses on the split step of a split-and-merging approach for color image segmentation. For splitting, we propose a quad-tree method based on hue angles (QTHA). The QTHA introduces a novel metric criterion for measuring hue homogeneity within a block...
In this paper, for Heterogeneous networks (HetNet), we propose a resource allocation with optimization problems based on dual connectivity and traffic load on backhaul links. In the proposed method, two optimization problems are constructed; one is for determining the allocation of a base station and frequency slots to each user, and the other is for determining routes for traffic in backhaul. We...
In this paper, a high-speed tunable filter using optical polarization control module is proposed and experimentally demonstrated. The output spectrum of the filter and is obtained and high-speed tuning performance is demonstrated. The proposed filter is cost effective and simple; consisting of polarization controller (PC), polarizer(P) and polarization maintaining fiber (PMF). To testify the high...
This paper describes the DNA microarray chips for disease detection and gene sequencing. It is combining imaging of DNA liquid jetting system. Its droplets are very small. It is only 50 to 60 microns. With the ASIC architecture circuit of the thermal bubble generation system, it can eject 432 DNA droplet points only 85µsec period.
This study presents a single-loop, third-order, low-power, high-precision, switched-capacitor delta sigma modulator (DSM) for a portable electrocardiogram (ECG) acquisition device. Several techniques, including modified feedforward structure, gain-enhanced current mirror operational transconductance amplifier (OTA), and dynamic comparator, are adopted to improve signal-to-noise ratio (SNR) and reduce...
We proposed a novel chroma upsampling scheme for YCbCr 420 videos. In a state-of-the-art work, the upsampling is performed by simply duplicating the stored U and V values in YCbCr 420 for 4 copies and saving to the corresponding locations in YCbCr 444. In the proposed method, instead of directly copying the current values, we consider their neighboring chroma values as the weights to redistribute...
Secured remote sensing is becoming a widely required technology to make certified measurements at remote sites via Internet of Things (IoT) without the need for trusted personal efforts. This is essentially required for reading huge number of meters such as consumed energy, gas, electricity or water meters. It is necessary to produce such meters at low-cost deploying standard System-on-Chip (SoC)...
In this paper, an image spam detection method was proposed. The proposed method has several parts: key block extraction, feature extraction, multi-level spam classifier. Key block extraction is used to extract the important information from image spams. Since color is one of important visual information to identify produces for humans, it is measured as a feature. To deal with geometric transform,...
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