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We propose a simple probabilistic model of zapping process of television viewers. Our model might be regarded as a ‘theoretical platform’ to investigate the human collective behavior in the macroscopic scale through the zapping action of each viewer at the microscopic level. The stochastic process of audience measurements as macroscopic quantities such as television program rating point or the so-called...
“Kawaii” is a Japanese word that represents an emotional value; it has positive meanings, such as cute, lovable, and small. In the 21st century, the emotional values of industrial products become very important. However, since not many studies have focused on the kawaii attributes, we focus on a systematic analysis of kawaii products themselves, that is kawaii feelings caused by the attributes such...
Benefit estimation is one of the most important parts of feasibility study of investment projects. In order to make a solid business justification in investment, the management team always quantified the benefit from the projects. Current industrial approach to estimate benefit of advanced process control (APC) is based on the conventional estimation techniques, namely, statistical analysis and payback...
In position control of mechatronic devices, velocity feedback is necessary for injecting additional damping to avoid low-frequency fluctuation around desired trajectories. In practice, velocity signal is often obtained by performing Euler discretization on position signal from an optical encoder. However, due to the limited encoder resolution, the obtained velocity signal is corrupted by high-frequency...
This paper presents a robust formation control method independent on noise of camps sensor. There are various formation control method for multi-robot system. These methods offer great way to keep the (d, ϕ)-formation. In real environment, however, heading angle of each robot is affected by noise of compass sensor. Because of this reason, follower can't keep exact formation. In this paper, we suggest...
This paper proposes a force redistribution method to compensate for actuator breakdowns on active vibration-isolation tables. The vibration-isolation table is supported by eight pneumatic actuators, and has a redundant number of actuators with respect to the degrees of freedom (DOFs) of the table's motion. When some of the actuators break down, their output forces are re-distributed on the unbroken...
A wind-hydrogen project which converts offshore wind energy into hydrogen has been proposed. Because wind speed changes rapidly in wide range, the system safety boundaries are often violated. This paper deals with the problem of system control for the wind-hydrogen system, in order to avoid dangerous conditions like over-temperature and over-pressure. First, the mathematical models of the wind-hydrogen...
This paper addresses how to select orientation parameters for rotational impedance control. Since the rotational impedance characteristics are inherently nonlinear, implementation of the rotational impedance control is relatively difficult. As a pragmatic solution to the problem, this paper attempts to maximally approximate the nonlinear impedance characteristics by linear ones. Because the degree...
We integrate software components that allow efficient and successful grasping of kitchenware objects. The contributed components include: The object pose detector, the gripper reaching motion and the grasp hypothesis selection. The object pose detector of Drost et. al. [10] is improved, considering rotationally symmetric objects. The reaching motion execution combines two independent dynamical systems:...
The inspection machine in PCB(Printed Circuit Board) assembly line checks for assembly errors by examining the images inside the component inspection region. The component inspection region consists of a component package region and a soldering region. The regions need to be extracted automatically so the auto-teaching system of the inspection machine can work. An image segmentation method was proposed...
We assessed the feasibility of applying a resistive network (RN) filter to the scale-invariant feature transform (SIFT) algorithm by performing computer simulations for the hardware implementation of the filter. SIFT is an algorithm for computer vision to describe and detect local features that are invariant to scale and rotation of objects. However, it is difficult to perform multiple spatial filterings...
The information of luminance and color at the point where the camera's sight line hits the surface of object. The area is large at which application of range finder is of useful, for example, model generation for computer graphics [1] and robot's eye [2]. In order to realize these requests, range finder needs some functions. Especially, there are 3 functions for range finder used for robot control...
Visual tracking by particle filter with pixel ratio in a region of interest for likelihood computation has wide range of applications despite of its simple algorithm. A GPGPU (General Purpose computation on Graphics Processing Unit) implementation of the visual tracking in parallel computation has been proposed in this paper. Algorithm of the tracker has almost fully been implemented in CUDA framework...
The 3D shape measurement of a cloth is indispensable for a robot to autonomously handle the cloth. When a humanoid hangs a large cloth using its arm, the cloth is very close to its head and extends across a very wide field of view. A normal stereo camera mounted on the humanoid robot's head cannot capture the whole shape; however, a fisheye stereo can. Because the cloth is very close to the stereo...
The latest video coding standard called high efficient video coding (HEVC) has been standardized recently to provide higher coding performance than previous state-of-the-art video coding standard H264/AVC. However, the near 50% bitrate reduction compared to H.264/AVC mainly comes from the adoption of several advanced coding techniques but at the expense of increased coding complexity as well as hardware...
This study investigates whether people entrain their body sway in everyday face-to-face communication. Interpersonal entrainment has been observed under experimental conditions, but not in daily life. We used wearable sensors to measure individual body vibration and face-to-face interactions in daily life. The observation included at least 100 participants from each of seen organization over a period...
To investigate relation between synchronization of nonverbal behavior and degree of understanding, we examined a task-oriented communication. The task consisted of an explanation from a lecturer to a student. As a nonverbal behavior, head movement was measured using an accelerometer. Degree of understanding was subjectively evaluated by the student for each section of the explanation. As a result,...
Slight differences between a learning target motion and motions performed by learners are not easy for learners to recognize, when some adjustments are needed by learners for learning motions. To assist human-learners recognize the slight differences in motions, not only symbolic expressions but also motion display plays very important role. In the previous work, we proposed a motion coaching system...
In geological area, such as petroleum and mining exploration, virtual reality (VR) immersive systems have been largely used for geological data treatments. Most of such VR systems involve unimanual interaction with data in a stereoscopic visual environment. Many research activities have shown that bimanual interaction tends to provide better performance when compared to unimanual interaction. Thus,...
With the rapid advanced in network technology, Network Virtualization has come into existence as a new approach of Active/Programmable Network. This software defined network platform makes it possible to design revolutionary networking architectures that go beyond the current TCP/IP based network. Clearly, traditional network can suffer and fail under extreme environment such as disaster recovery...
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