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In this paper, an upmixing method is proposed which converts nearly monaural audio signals into 5.1-channel ones for portable multimedia devices. Since spatial information is not clear due to close spacing between stereo microphones in portable devices, the proposed method tries to estimate the source direction depending on the frequency using azimuth-frequency analysis instead of directly estimating...
A multicopter is now becoming a crucial part in the broadcasting industry for capturing videos. When they are not able to reach places, men can control multicopters and take desired videos. However, there still exist many problems in capturing sound because the multicopter is often placed far from the sound source and the sound of the propellers interferes with the recording target sound. Capturing...
This paper presents a solution for a self-management system framework. Implemented solution enables network administrators to create, edit and execute Lua configuration scripts. Key benefits are: Evaluation of Lua's deployment in autonomic systems and definition of the event-model used for the configuration application.
The LDA-based face recognition using face images by actual distance as training images showed good performance. However, it causes user inconvenience as it requires the user to move multiple distance in person to acquire face images for initial user registration. In this paper, LDA-based face recognition applicable to robotic environments is proposed. The proposed method can get face images by distance...
A novel and high-quality system for moving object detection in sequences recorded with moving cameras is proposed. This system is based on the collaboration between an automatic homography estimation module for image alignment, and a robust moving object detection using an efficient spatio-temporal nonparametric background modeling.
This paper proposes a novel scene-change detection to recognize the change in a moving image for the frame rate up-conversion. The proposed algorithm calculates two-dimensional histogram. Then, it performs the positional analysis to extract a histogram shape and finally detects the scene change. In the experimental results, the proposed algorithm enhanced the average F1 score, compared to the benchmark...
A fast and robust camera's auto exposure algorithm is proposed by modeling its luminance characteristics as a concave/convex function of a control parameter. A proper parameter value is computed using a modified secant algorithm with fast convergence. The superior performance of the proposed algorithm is confirmed by experimental results.
With the growing number of infotainment services, the demand on high speed internet in vehicles is increasing. Yet, ensuring a high speed internet access at high mobility is challenging. Indeed, high mobility leads to Doppler shifts that result in Inter Carrier Interference (ICI) in OFDM-based wireless systems. Many ICI equalization techniques have been proposed, yet these incur an additional computational...
As electric vehicles (EVs) have been popularized, research on battery management system (BMS) of EVs' core technology has considerably drawn attention. Among various functions of BMS, predicting state-of-health (SOH) that indexes batteries' aging is the most crucial to determine replacement time of the battery or to estimate driving mileage. This paper studies how to predict SOH in practical EV environments...
We investigated a correlation between electroencephalography (EEG) power and user satisfaction about haptic sensation. EEG power in alpha, delta, and high beta band showed a significant correlation with haptic satisfaction, especially in the early period. Our results show the feasibility of a novel metric for UI design of consumer electronics.
In this paper, we propose frontal human detection method by using real-measurement of object by using depth camera. Two geometrical features of human body are used to detect the human orientation, such as shoulder width and depth difference between head and chest. The validity of proposed algorithm is confirmed by using real sequences. The proposed algorithm would be very useful in early phase of...
In recent years, the demand of polarizer films has increased since that liquid crystal displays are widely used in consumer electronics products such as smart phones, tablet computers and large-size TVs. For improving production yields, manufacturers actively adopt automated inspection equipment to detect in-line polarizer film defects. This study uses computer vision techniques to develop a cost-effective...
The paper suggests a plan for efficiently allocating limited radio frequency (RF) resources by using a propagation interference analysis (PIA). For this, interference path rates (IPR) among networks were calculated and compared with allowable interference rates (AIR) to determine channel reuse. For improving the speed at which IPR is calculated, the minimum interference separation distance (MISD)...
This paper presents CLOSH, a source level offloading tool for special-purpose hardware accelerators. CLOSH is designed to make it easy to accelerate existing applications when their source code is available. We evaluated CLOSH with one application on our new TV platform, and found that required cycles are decreased by 27.4%.
A novel and robust biometric face identification algorithm for access control applications is proposed. The key contribution is the design of a high discriminative feature descriptor for depth imagery, called Depth Spatiogram of Local Quantized Patterns, which is used as input of a bank of Support Vector Machine classifiers.
This paper proposes a wideband spectrum sensing scheme in cooperative cognitive radio networks. The proposed multiband scanning method efficiently exploiting scheduling diversity outperforms the conventional multiband scanning method using the spatial diversity. The proposed scheduling diversity is more beneficial to the low-SNR regime with a large number of sensors and sensing channels.
In this paper, we propose a new spatial modulation (SM) scheme based on quaternary quasi-orthogonal sequences (Q-QOSs), referred to as Q-QOS-SM. Unlike an original SM scheme, the proposed scheme uses the indices of the Q-QOSs for mapping of input bits, resulting in two times more bits to be allocated to an antenna-selection part compared to the original SM. From simulation results, the Q-QOS-SM is...
This paper proposes a system model to improve the utilization of smart appliances for smart grid demand response by expanding smart energy profile (SEP) 2.0. The original smart appliance system model was designed assuming that there exists a device with an energy service interface model in the home environment, but this is not common in the real world. Our proposed expansion of SEP 2.0 allows the...
3D video is an emerging technology that bundles depth information with texture videos to allow for view synthesis applications at the receiver. Depth discontinuities define object boundaries in both, depth maps and the collocated texture video. Therefore, depth segmentation can be utilized for a fine-grained motion field segmentation of the corresponding texture component. In this paper, depth information...
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