• 대한전자공학회논문지SP
• /
• 제48권3호
• /
• pp.50-61
• /
• 2011

중대형 터치스크린의 일반적인 방법으로 적외선을 이용하고 있지만 이 방법은 터치인식장치의 설치가 어렵고, 응용의 범위가 제한적이며, 멀티포인트 방식에서 좌표오류가 발생하는 문제점을 가진다. 가시광선을 이용하는 일반 카메라를 이용한 터치 스크린의 경우 접촉이 일어난 위치 이외에서 접촉 물체의 색상정보를 이용할 수 있기 때문에 적외선을 사용하는 터치스크린보다 활용성이 뛰어나다. 또한 적외선 터치스크린에 비하여 설치가 간편한 장점을 가진다. 그러나 주변의 색상 및 조도에 따라서 인식 성능이 달라지고, 스크린의 반사광도 인식되는 문제점을 안고 있어 지금까지 큰 호응을 얻지 못하고 있다. 본 논문에서는 일반 카메라를 사용하는 터치스크린의 구조, 접촉 물체의 인식 및 싱글 포인트 및 멀티 포인트의 좌표 연산과정에 대하여 연구한다. 이 방법은 싱글 포인트의 터치스크린에서 적외선 카메라방식과 동일한 인식성능을 보였다. 멀티 포인트 터치스크린은 접촉 물체의 거리정보를 이용하여 기존의 터치스크린이 가지고 있는 고스트 포인트(Ghost point)를 해결하였으나, 싱글 포인트 터치스크린에 비하여 인식성능이 감소하였다. 실험 결과에 따르면 싱글 포인트 터치스크린의 수행속도를 개선할 경우 적외선 카메라방식을 대체 가능함을 알 수 있다.

• 대한산업공학회지
• /
• 제41권3호
• /
• pp.225-232
• /
• 2015

The smart watch is the most popular wearable computing device because it takes a form of wristwatch. Many smart watches have adopted the touch screen interface due to the limited size of display. This paper focuses on touch key size and spacing that affect the usability about the touch key of smart watch. The experiments were made for four touch key sizes (width${\times}$height; $5{\times}5$, $5{\times}7$, $7{\times}5$, $7{\times}7mm$) and nine touch key spacing (vertical${\times}$horizontal; $0{\times}0$, $0{\times}1$, $0{\times}3$, $1{\times}0$, $1{\times}1$, $1{\times}3$, $3{\times}0$, $3{\times}1$, $3{\times}3mm$). The completion time, error rate, control discomfort and identification discomfort were measured. The touch key size $7{\times}7$, $7{\times}5$ and the touch key spacing $3{\times}3$, $1{\times}3$ provided the best results in terms of the completion time and the control discomfort, while the square touch key ($7{\times}7$, $5{\times}5$) provided the best performance for the error rate measure. The result of this study can help ergonomically design the touch interface of the smart watch.

• The Journal of Korean Physical Therapy
• /
• 제24권2호
• /
• pp.134-142
• /
• 2012

Purpose: This study examined the effect on postural control during the stimulation of haptic touch with fingertip on the stable surface at quiet standing posture, squat flexion stage, 60 degrees squat stage and squat extension stage. Methods: The postural sway was measured on the force platform, while 30 subjects were squatting, under three different haptic touch conditions (No Touch [NT], Light Touch [LT], Heavy Touch [HT]), above the touch pad in front of their body midline. Three different haptic touch conditions were divided into 1) NT condition; squatting as right index fingers held above the touch pad, 2) LT condition (<1N); squatting as the touch pad was in contact with right index fingers pulp with a pressure not exceeding 1N and 3) HT condition; squatting as subjects were allowed to use the touch pad for mechanical support by transmitting onto it with as much force, choosing with their index fingers. Results: There was significant decrease in LT, rather than that of NT (p<0.01), and in HT, rather than that of LT (p<0.01), as the results of the distance and velocity of center of pressure (COP) in mediolateral direction at quiet standing position. In anteroposterior direction, the distance and velocity of COP in LT and HT showed significant decrease, when compared to that of the data of NT (p<0.01). There was no significant difference between the 3 conditions (NT, LT, and HT), with respect to the distance and velocity of COP in mediolateral direction, during dynamic balance (squat flexion stage, squat extension stage) (p>0.05). In anteroposterior direction, the results of the distance and velocity of COP in HT showed significant decrease when compared to that of the data of NT (p<0.05). Conclusion: Light touch, during the task, decreased the postural sway at static balance. The results suggest that haptic touch should be applied, appropriately, because it varies the effects according to different conditions.

• 한국멀티미디어학회논문지
• /
• 제17권12호
• /
• pp.1430-1436
• /
• 2014

We propose an algorithm which detects the touch of the fingertip on a general wall using the shadow information. Nowadays, there is a demand for presentation systems which can perceive the presenter's action so that the presenter can use natural movements without extra interface hardware. One of the most fundamental techniques in this area is the detection of the fingertip and the recognition of the touch of the fingertip on the screen. The proposed algorithm recognizes the touch of the fingertip without using the depth information, and therefore needs no depth or touch sensing devices. The proposed method computes the convex hull points of both the fingertip and the shadow of the fingertip, and then computes the distance between those points to decide whether a touch event has occured. Using the proposed method, it is possible to develop a new projector device which can perceive a fingertip touch on a general wall.

• 한국산업정보학회논문지
• /
• 제21권1호
• /
• pp.27-34
• /
• 2016

본 논문에서는 가상 터치방식에서 다중 터치를 인식하는 방법에 대해 제안한다. 가상 터치는 물리적 터치 방법에 비교하여 간단한 깊이 카메라만을 설치하고, 객체 깊이값과 배경의 깊이값의 차이만으로 정확하게 객체를 추출하는 방법으로 저비용으로 구현할 수 있는 장점이 있다. 하지만 다중 터치를 구현함에는 정확도가 떨어지는 문제점이 있다. 본 논문에서는 다중 객체 인식을 위한 이진화, 라벨링, 객체 추적의 알고리즘을 통하여 다중 터치의 정확도를 높이는 방법을 제안한다. 모의실험을 바탕으로 다양한 다중 터치 이벤트를 제공함을 보여준다.

• 재활간호학회지
• /
• 제9권1호
• /
• pp.56-63
• /
• 2006

Purpose: The objectives of this study were to investigate perception of touch therapies among nurses who looking after cancer patients, ultimately to probe possibility of utilization of touch therapies as nursing interventions. Method: A descriptive study conducted from Dec. 2005 to Jan. 2006. 270 nurses taking care of cancer patients in 2 urban hospital were completed self-report questionnaire about general characteristics, utilization of touch therapies, willingness to adopt touch therapies in their practice, and perception of safety and effectiveness of touch therapies. Result: The participants were average 27.97 year-old, 60% of them had bachelor's degree, most of them were staff nurses(83.0%), and 34.6% of them were 3-5 years experienced in oncology nursing. Among 5 touch therapies(therapeutic touch, massage, reflexology, acupressure, and acupuncture), massage was the most positively perceived therapy not only the aspects of safety(67.1%) and effectiveness(65.9%), but also willingness to utilize in their practice(71.2%). There was no significant difference in willingness to utilize in their practice per age and years of working in oncology nursing. Older and more experienced groups perceived more positively to massage and reflexology. Conclusion: Massage might be readily adopted as a nursing intervention in oncology nursing practice. Strategies to encourage the utilization of touch therapies as nursing intervention should be established.

• Journal of information and communication convergence engineering
• /
• 제9권1호
• /
• pp.78-82
• /
• 2011

This paper proposes a new circuit for capacitive sensing based on Dickson's charge pump. The proposed touch sensing circuit includes three stages of NMOS diodes and capacitors for charge transfer. The proposed circuit which has a simplified capacitive touch sensor model has been analyzed and simulated by Spectre using Magna EDMOS technology. Looking from the simulation results, the proposed circuit can effectively be used as a capacitive touch sensing circuit. Moreover, a simple structure can provide maximum flexibility for making a digitally-controlled touch sensor driver with lowpower operations.

• 한국감성과학회:학술대회논문집
• /
• 한국감성과학회 2009년도 추계학술대회
• /
• pp.44.2-44.2
• /
• 2009

본 제품 개발 사례는 날로 사용자가 증가되는 Touch Phone의 감성 디자인을 위한 선행 감성 평가 프로토타입으로 활용하고자 하였다. 본 감성 프로토타입은 Touch Phone에 근접한 형태로 디자인 했으며, 기본적인 평가에 필요한 프로그램을 개발하여 적용하였다. 특히, 본 감성 프로토타입은 다양한 Touch Phone의 GUI 및 Graphic Motion에 대한 감성에 대한 평가를 PC환경에서 수행할 수 있도록 Dual Monitor 환경으로 개발하였으며, 차세대 Touch Phone UI의 화두인 Multi-Touch를 위한 10개의Multi-Touch가 가능한 터치패널을 적용하였다. 이에 본 개발 사례를 활용 함으로써, Touch Phone의 다양한 감성적인 Motion 알고리즘 및 연구 및 평가검증이 PC환경에서 Touch Phone과 동일한 사용환경으로 평가하고 실험할 수 있는 환경의 구축이 가능하다.

• 한국멀티미디어학회논문지
• /
• 제18권11호
• /
• pp.1313-1318
• /
• 2015

Current touch pen requires the special equipments to detect a touch and its price increases in proportion to the screen size. In this paper, we propose a method for detecting a touch and implementing a pen using the depth information. The proposed method obtains a background depth image using a depth camera and extracts an object by comparing a captured depth image with the background depth image. Also, we determine a touch if the depth value of the object is the same as the background and then provide the pen event. Using this method, we can implement a cheaper and more convenient touch pen.

• 산업공학
• /
• 제1권1호
• /
• pp.85-99
• /
• 1988

High Touch product is characterized by shorter life cycle together with specification/integration of existing function in order to capitalize the rapidly emerging high technology. R & D strategy for a development of High Touch product generally emphasizes two aspects ; Industrial Design (ID) and Ergonomic Design (ED). However, working knowledge on ED of a systematic identification of potential High Touch products is not readily available. The purpose of this study was three-folded : (1) To emphasize the fact that greater efforts should be geared to ED in High Touch design ; (2) To develop an ergonomic approach based on analysis of implicit human needs that identifies potential area of High Touch ; (3) To bubble with new and probable High Touch products in home electronics that actually demonstrate the validity of this study.