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This paper proposes a novel design method of two-dimensional (2-D) non-separable linear-phase paraunitary filter banks (LPPUFB). The two-degree vanishing moment constraint is derived for the lattice structure. In the 2 ?? 2-decomposition case, the authors have already derived the constraint and designed non-separable symmetric orthonormal wavelets with two-degree vanishing moments. This work extends...
Software visualization with sequence diagrams is one of the promising techniques aimed at helping developers comprehend the behavior of object-oriented systems effectively. However, it is still difficult to understand this behavior, because the size of automatically generated sequence diagrams tends to be beyond the developer's capacity. In this paper, we propose a sequence diagram slicing method,...
In this paper, we study an extended consensus problem for multi-agent systems, where the entire system is decentralized in the sense that each agent can only obtain information (states or outputs) from its neighbor agents. The concept extended consensus means that a combination of each agent's state elements is required to converge to the same vector. For this extended consensus problem, we propose...
In this paper, we propose a new robotic manipulation: caging manipulation by robots and walls. Caging is a method to make an object inescapable from a closed region by rigid bodies. Previous studies use only robots for caging, while we use walls as well. First, we formulate 2D caging with the environment such as walls. Secondly, we derive the caging manipulability condition. The manipulability problem...
The purpose of this study is to realize a practical method of providing cyber security for power system communications. Power system communications can be classified into three main categories: real-time protection, supervisory control and data acquisition (SCADA), and remote access. This paper describes a concept and method of effectively applying information-theoretic cryptography to real-time protection...
We propose a chapter mark addition method for surgery video application that adopts cubic higher-order local auto-correlation (CHLAC) feature. In our method normal motions, which frequently occur in front of video cameras, are learnt statistically with CHLAC in combination with the subspace method. An anomalous motion is detected as a motion that exists far from the learnt subspace for the motions...
We are developing an HLAC-based system to emulate pathologists' skill for cancer diagnosis. The system very quickly processes virtual-slide images of tissues under high magnification, and automatically diagnoses cancer by anomaly detection based on HLAC and PCA. We have demonstrated the effectiveness of this system through experiments on actual cases of metastasized cancers in lymph nodes.
The dependencies of the backscattering from the ocean surface on the wind direction are analyzed by using the Pi-SAR under weaker wind condition (5 m/s) than the former analysis under stronger wind as 14 m/s. In the X-band HH polarization, the dependency of the normalized cross section (NRCS) on wind direction depends on the incidence angle, differently from the former analysis. In the X-band VV polarization,...
In this paper, we study a consensus problem for multi-agent systems via dynamic output feedback control. The entire system is decentralized in the sense that each agent can only obtain output information from its neighbor agents. In contrast to the existing graph Laplacian based algorithm, we propose to reduce the consensus problem on hand to solving a strict matrix inequality using appropriate coordinate...
Wireless body area networks (WBAN) have been discussed for medical and non-medical applications. Ultra wideband (UWB) technologies have been anticipated for use in WBAN because of their possible low power consumption and anti-multipath capabilities. Numerous literature has presented UWB propagation characterization and modeling around a human body in either a radio anechoic chamber or a particular...
As the search technology rapidly developed, nowadays, main search engines are already able to meet users basic search desire. However, current search algorithms or methodologies mostly depend on keywords matching process, which could be effective for text search while not efficient for keywords-lacking or non-text search scenarios. This paper summarizes the solution adopted by current search engine...
In this paper, we propose a method for extracting color image features, called color index local auto-correlations. Pixel color is quantized and described sparsely in a manner similar to the color indexing of color histograms. In addition, by utilizing spatial auto-correlations of the color indexes, the characteristics of color texture can be extracted more effectively than ordinary histogram-based...
In this paper, the main attention is focused on transient property of control input signal, we propose a novel model reference adaptive control scheme for time-continuous single-input single-output linear systems with input saturation. To improve a control performance, a novel estimator using an observer for the output tracking error signal is proposed. Using the estimator, it is shown theoretically...
In this paper, we study a consensus problem for multi-agent systems, where the entire system is decentralized in the sense that each agent can only obtain information (states or outputs) from its neighbor agents. Existing approaches in the literature are mostly based on graph Laplacian of the graph which describes the interconnection structure among the agents, and such methods can not deal with complicated...
In this paper, we introduce a cleaner-robot, which has arm-like mechanism for vacuum cleaning, and we also propose the control method, which realizes complex task with the cleaner-robot. This method is based on the real-time optimization for nonlinear dynamical systems. Our method has three features. The first is to include penalty concerning main body of robot and arm in performance index. The second...
In this paper, we deal with an obstacle avoidance control for a PVTOL (Planar Vertical Takeoff and Landing) aircraft. One of the effective approaches is to formulate such a problem in the framework of optimal control with penalties in the cost functions, and thus any existing optimal control design method is applicable. Based on the dasiavirtual spacepsila approach, we formulate the obstacle avoidance...
A new algorithm for numerical solutions of constrained nonlinear optimal control problems has been proposed based on Riccati transformation. First, we approximate the constrained nonlinear optimal control problems by the Taylor expansion technique. Then, constructing the constrained LQ problems as the accessory problems, we analytically solve them via Riccati transformation. Finally, repeating the...
The ultrafast electron-phonon coupling dynamics due to a breather soliton inducing amplitude and frequency modulations after photoexcitation in trans-polyacetylene was observed by ultrafast multicolor spectroscopy. The results were in good agreement with recent theoretical predictions.
We propose methods for segmenting a motion sequence into motion primitives, taking into account temporal constraints (continuity along the time axis). In the proposed methods, dynamic programming (DP) is used on a motion feature sequence to allow for the effects of these constraints on the results of the segmentation. The methods do not require such a running window along the time axis, as is typical...
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