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This paper evaluates three inter-vehicle spacing models based on exponential, Generalized Extreme Value, and Exponential with robustness factor statistical distributions [1], [2], [3]. Vehicles adjust transmission range as a function of its spatial density on a road segment to increase its network connectivity with other vehicles. This connectivity can be secured by deploying this scheme [4] which...
We present an efficient pose tracking method for mobile augmented reality. Although the conventional pyramid-based coarse-to-fine approach has good precision and robustness, it is too complex for low-spec mobile devices and speeding up pose tracking is essential. The proposed method focuses on the rapidity and linearity of the movement between successive frames, and omits unnecessary processing such...
In multimedia streaming network, voice and video packets are transmitted through IP, UDP and RTP. Then the redundant header data in contiguously transmitted packets can result in the inefficiency of data transmission. To prevent this, ROHC (RObust Header Compression) mechanism is applied. The ROHC uses a WLSB (Window Least Significant Bit) which is an encoding method using the value of sliding window...
Recently, advanced driver assistance system becomes an important area for automotive industries. Especially, stereo vision-based system has been actively researched. However, in practice, the system has a difficulty in getting correct information because the images from multiple cameras may contain different exposure levels, illumination changes, and lighting geometry differences. To isolate these...
We propose a new categorical object recognition algorithm robust to scale changes. We first partition an input image into k regions by using depth data from an RGB-D sensor, and then we estimate the object scale for each partitioned region. Finally, scaled model is applied to recognize the object.
Detection of peaks of different waves of a finger-ECG signal is important for biomedical and biometrics applications. We introduce the augmented-Hilbert transform of first derivative of signal to signify the peaks by suppressing the non-peaks and noisy peaks. We need two computationally simple steps for the detection of peaks: signal transformation and finding local maxima-minima. This method needs...
Optimization techniques are become more popular for the improvement in control of Three Phase Induction Motor (TIM). Also the Volt/Hz (V/f) control and space vector pulse width modulation (SVPWM) are used to reduce the harmonics level related to other control and modulation techniques. This paper deals with the tuning of PI controller parameters to be used in TIM. Particle Swarm Optimization (PSO)...
Video has difficulty to maintain consistent intensity and color tone from frame to frame. Particularly, it happens when imaging device such as black box camera has to deal with fast changing illumination environment. However, conventional automatic white balance algorithms cannot handle this good enough to maintain tone consistency, which is observed in most commercial black box products. In this...
In this paper, a pristine method of tough digital video watermarking algorithm in H.264 compressed domain is articulated. Most of the video watermarking techniques interleave the watermark in I-frames but in this paper a fabulous method of blind low complexity video watermarking in P-frames for H.264 video is proposed. Our algorithm decides which 4×4 block within the macro-block of P-frame will be...
Digital watermarking is a valid solution to protect copyright of owners. But there is still a difficult problem of copyright disputes as the IBM attack or the interpretation attack when multiple watermarks of multiple authors appear in the same digital media. We provide a new feasible solution, in which a multiple watermarking scheme using complete complementary code based on the spread spectrum is...
In extracting the essential oils, some of the influential factors need to be considered which can affect the yield and quality of the oils. Many studies have performed on several influential parameters and dictated that the temperature of extraction plays an important parameter that can give large effect on yield and quality. In order to regulate the temperature, a suitable controller is required...
Depth information can be obtained using stereo matching algorithms, which compute the horizontal displacement (disparity) of the corresponding points and convert to depth information using the triangular relation. However, the matching process is challenging with presence of textureless regions. This paper proposes a novel disparity refinement method for stereo matching based on Semi-global Matching...
This paper deals with the solution of the optimal power flow (OPF) problem under voltage regulation by means of a distributed algorithm. Taking inspiration from the recent literature on distributed-OPF, the approach is developed via the alternating direction method of multipliers (ADMM), and provides a fully decentralized, scalable, very fast, and robust method, whose performance is shown in meaningful...
Tracking and rejecting periodic signals are common tasks in many control applications. A well-known use of Repetitive Control (RC) is to both track a periodic reference signal and reject periodic disturbance. This paper reviews various designs of RC that are classified into basic RC design and robust RC design. The recent applications of RC are also presented in this paper.
For any watermarking system, there are two important requirements which are quality and robustness. These two requirements are conflicts all the time, which means when increasing image quality the robustness will decreasing and vice versa. This study focuses on the robustness after applied chosen attacks for the watermarked image based on the existing technique Dual Intermediate Significant Bit (DISB)...
This paper investigates the automatic control problem of high speed train systems under uncertain resistance conditions such as time-varying resistance, unknown aerodynamic drag and wind gust. A sliding mode observer (SMO) based control method is designed for tracking given position-velocity profile precisely. The control method is disturbance rejective that does not rely on specific resistance coefficient...
Occlusion is one important problem in single object tracking. However, conventional methods are not capable of making full use of the spatial information because of occlusion, which may lead to the drift. In this paper, we propose a robust patches-based tracking method via sparse representation, namely RPSR, which selects the unoccluded patches, and adaptively assigns larger contribution factors to...
The problem of optimal state feedback controller design in terms of quadratic performance index is considered. The problem is formulated in the form of linear matrix inequalities (LMIs). The obtained solution guarantees stabilization of the aircraft during flight mission. During flight envelope the aircraft is subjected to the external stochastic disturbances. The efficiency of the proposed approach...
The rise in motion-based gaming peripherals has afforded intriguing opportunities for low-cost instrumentation of health-oriented activities. One particular activity, that of physical therapy, is of considerable interest as traditional systems in the area cost on the order of tens of thousands of dollars. However, while recent research has shown that gaming peripherals can deliver high quality instrumentation,...
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