Changmok Oh

• MD
• Seninor Researcher at Electronics and Telecommunications Research Institute

This paper addresses a novel solution of the problem of image segmentation by its texture using Gabor filter. Texture segmentation has been worked well by using Gabor filter, but there still is a problem; the number of clusters. There are several studies about estimating number of clusters with statistical approaches such as gap statistic. However,...

In this paper, we propose an integrated path planning algorithm that reasons on integration between a local path planners based on sensory information and global path planners based on global prior information in a partially unknown outdoor environment. A local path planner typically generates collision-free paths using laser range sensors, sonar s...

This paper addresses a planning method to generate well distributed multiple paths in a control space. For this purpose, we employ and combine rapidly-exploring random tree (RRT), evolutionary algorithm (EA) to compose a diverse multi-path planning (DMPP) algorithm. A population is composed of individuals which represent a path-set. Each individual...

The ability to live without the help of a caretaker enhances the quality of life of those who are bed-ridden or confined to a wheel-chair. A lot of systems have been proposed to support the daily life of bed-ridden. A smart home, especially a bed-type robot system, can help the movement and action of patients.This paper discusses the development of...

This paper presents the sensor deployment method to design a RFID sensor network for the mobile robot localization using evolutionary approach. For this purpose, we employ the differential evolution (DE), which is well-known for promising performance. We propose two variation methods, the direct optimization strategy for the maximum usage of initia...

A* algorithm can generate the optimized unique path if the cost function is well designed based on the given information. Especially for global path planning (GPP), A* is one of best solutions because GPP itself assume that a prior information. In this paper, classic A* algorithm is modified for outdoor military robot with risk and velocity map. Fo...

This article introduces a new smart house, the Intelligent Sweet Home, developed at the Korea Advanced Institute of Science and Technology (KAIST), Korea, for testing advanced concepts for independent living for elderly and physically handicapped individuals. The work focuses on human-friendly technical solutions for motion/mobility assistance, hea...

Electroencephalogram (EEG) pattern classification plays an important role in the domain of brain computer interface. However, EEG data is a multivariate time series data which contains noise and artifacts. In this paper we present methods contains for EEG pattern classification which jointly employ principal component analysis (PCA) and neural netw...

The increase in the life span of many elderly people means that there are more demands for aids to support them in normal life [11]. Previous efforts to improve the ability of bedridden people to enjoy daily life have led to the development of devices with special functions such as a food supplying using robotic manipulator equipped with vision, de...

An intelligent bed robot system (IBRS) is proposed to help the elderly and the disabled for their independent life in bed. The IBRS is a special bed equipped with two robot arms and an array of pressure sensors attached onto the mattress. The pressure distribution on the mattress is used to estimate the pose of the patient, and an appropriate assis...

In this paper, we proposed an Intelligent Bed Robot System (IBRS) that is a special bed equipped with robot manipulator. It helps the elderly and the disabled for their independent life in bed without other assistants. In order to support a patient on the IBRS, we used a pressure sensors distribution mattress for pose and motion estimation of the u...

In this paper, an intelligent bed robot system (IBRS) is proposed, that is a special bed equipped with robot manipulator. To assist a patient using IBRS, pose and motion estimation process is fundamental. It is designed to help the elderly and the disabled for their independent life in bed without other assistants.

In this paper, an intelligent bed robot system (IBRS) is proposed, that is a special bed equipped with robot manipulator. To assist a patient using IBRS, pose and motion estimation process is fundamental. It is designed to help the elderly and the disabled for their independent life in bed without other assistants

This article deals with handling unknown factors, such as external disturbance and unknown dynamics, for mobile robot control. We propose a radial-basis function (RBF) network-based controller to compensate for these. The stability of the proposed controller is proven using the Lyapunov function. To show the effectiveness of the proposed controller...

This paper deals with handling the unknown factors, such as the external disturbance and the unknown dynamics, for a mobile robot control. We propose a RBF network based controller for compensate for them. The stability of the proposed controller is proven by using Lyapunov function. To show the effectiveness of the proposed controller, several sim...

Face detection and facial feature extraction is a necessary first-step in face recognition systems. These tasks are one of the visual tasks, which humans can do effortlessly. However, in computer vision terms, this task is not easy. This paper presents a new active contour model using color information for extracting facial features. We describe a...