• Proceedings of the Korea Contents Association Conference
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• 2016.05a
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• pp.417-418
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• 2016

본 논문에서 장난감 자동차를 이용한 차선의 검출과 신호등을 인식하는 자율주행 자동차 시스템에 관한 연구이다. 제안된 시스템에서는 장난감 자동차를 분해하여 라즈베리파이보드와 아두이노보드을 설치하고, 임의로 설치된 차선과 신호등을 인식하여 주행하도록 구현한다. 차선의 검출은 자동차의 상단에 설치된 파이카메라로부터 입력영상을 획득하고, 획득된 영상의 하단부분에서 차선검출을 통하여 자동차의 방향을 제어한다. 또한 트랙의 상단에 설치된 신호등의 초록과 빨강 신호를 검출하고 인식하도록 구현하였다.

• Proceedings of the Korea Contents Association Conference
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• 2013.05a
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• pp.37-38
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• 2013

본 논문에서 우리는 장난감 자동차의 비선형 제어 시스템을 제안한다. 제안된 시스템은 무선 장난감 자동차에 안드로이드 모바일 플랫폼과 블루투스 통신모듈을 설치한다. 제안된 시스템은 스마트폰의 삼축가속도 센서를 이용한 제어와, 터치인터페이스에 의한 제어, 그리고 자치권을 가진 자율주행이 가능하다. 제안된 시스템을 이용하여 실험실에 설치된 차선을 자동으로 추적하는 시스템을 구현하였다. 향후 다중추적 자율시스템으로 확장을 계획하고 있다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.05a
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• pp.679-680
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• 2018

IoT(Internet of Things) is no longer just a concept, and It has become common as individual users have tried to implement it directly through small boards and components. This research implemented a system to control a general toy car using Raspberry pi and motor driver. This research will help develop ordinary toy cars to RC cars or learn on their own and drive on their own through further development.

• Journal of the KSME
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• v.53 no.2
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• pp.30-34
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• 2013

기어는 사람에 의해 사용된 가장 중요한 기계 중의 하나이며, 회전하는 두 축 사이에 운동과 동력을 전달하고 회전 방향과 속도를 변경하는 역할을 한다. 기어는 우리가 손에 차는 시계나 벽시계뿐만 아니라 자동차, 기차, 선박, 비행기에서 엔진의 동력을 전달하여 바퀴나 혹은 프로펠러를 돌리기 위해 사용된다. 또한 장난감, 복사기, 팩스, 풍력발전기에 사용하는 등 그 용도가 다양하다. 이 글에서는 기어의 역사를 간단히 살펴보고 기어의 진동 소음에 관련된 연구 주제에 대해 기술한다.

• Journal of the KSME
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• v.28 no.6
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• pp.525-529
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• 1988

고분자 및 복합재료 성형기술의 향상은 다른 재료의 생산기술에서 요구되는 것과 같이 고정밀 도를 성취하기 위한 기술, 전산기를 이용한 가공공정의 자동화, 풍부한 데이터베이스 및 소프트 웨어의 개발, 재료 및 성형장비의 표준화, 고급인력의 양성 등이 절대적인 필수조건이다. 필자는 아직 국내의 사정에 익숙하지 못해서 여러면에서 부족한 국내의 산업수준을 고려할 때 국내의 고분자관련산업도 많은 발전을 요구한다고 판단된다. 자동차, 전기전자, 우주항공 등 첨단산업 으로부터 장난감, 스포츠용품까지 널리 사용되는 고분자 재료의 가공기술 개발에 과감한 투자를 하여야 할 것으로 확신한다.

• IEMEK Journal of Embedded Systems and Applications
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• v.19 no.1
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• pp.27-32
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• 2024

Recently, there has been a growing interest in integrating physical toys into video gaming within the game content business. This paper introduces a novel method that leverages low-cost camera as an alternative to using sensor attachments to meet this rising demand. We address the limitations associated with low-cost cameras and propose an optical design tailored to the specific environment of model car recognition. We overcome the inherent limitations of low-cost cameras by proposing an optical design specifically tailored for model car recognition. This approach primarily focuses on recognizing the underside of the car and addresses the challenges associated with this particular perspective. Our method employs a transfer learning model that is specifically trained for this task. We have achieved a 100% recognition rate, highlighting the importance of collecting data under various camera exposures. This paper serves as a valuable case study for incorporating low-cost cameras into vision systems.

• Korean Journal of Cognitive Science
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• v.4 no.1
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• pp.87-122
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• 1993

One part of a form can be described locally(itself as a whole)and globally(as a part of the whole). How each of the two (double)descriptions is processed and what relationships the one has with the other are among important questions of perception.Previous studies had been on whether global processing progresses faster or slower than local processing.This study,however,focused on charateristics of the two processings.The task was that subjects identify global or local name of a compound stimulus briefly exposured.Repetition effects were meansured under three displaying conditions with two types of stimulus set.The result pattern shows that global/local processing is a dynamic phenomenon with its own properties and variability on conditions as well.

• IEMEK Journal of Embedded Systems and Applications
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• v.8 no.5
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• pp.249-254
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• 2013

In this paper we propose nonlinear control system for automatic unmanned vehicle using a RC (Radio Controlled) car which is usually controlled by a remote controller. In the proposed system, a RC car is dissembled and reassembled with several parts enabling it to be controlled by an android mobile platform with Bluetooth communication. In our system, an android mobile smartphone is mounted on the RC car and plays an important role as an eye of the car. The proposed system automatically controls the RC car to follow a lane that we draw on the floor of our laboratory. Also, the proposed RC car system can also be controlled manually using the accelerometer sensor of a smartphone through a Bluetooth module. Our proposed system that has both manual mode and automatic mode consists of several components; a microprocessor unit, a Bluetooth serial interface module, a smartphone, a dual motor controller and a RC toy car. We are now in the development of a group driving system in which one car follows the front car that tracks a lane automatically.

• Journal of Digital Contents Society
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• v.17 no.5
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• pp.339-348
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• 2016

While the development of digital media has positive aspects of knowledge enlargement and a new communication channel, it also demonstrates a lot of unexpected defects, such as personal isolation, addiction, obsession or Attention Deficit Hyperactivity. Thus, the author considers it is urgent to develop the contents specifically designed for children in this new digital environment and would like to propose the combined Children's device and contents using the new concept of Mixed Reality. The Mixed Reality that mixes real world and virtual world provides the opportunity that can experience the new concept of play education by using touchable interface of children's real life toy cars together with the virtual world in the smart phones. This Mixed Reality that is extended from sole senses will lead the children to develop the concentration, sense of reality and imagination and also to experience the enlarged play and education concept.

• Journal of Digital Convergence
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• v.18 no.7
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• pp.389-395
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• 2020

Female empowerment advertising campaigns are easily observed in the United States and European countries whereas it is rarely found in Korea. Thus, this study is designed to analyze female empowerment advertising campaigns so-called femvertising through a case analysis method. The case analysis is often employed in the field of advertising and other social sciences, especially is helpful in finding current trends. Study results found that themes of global femvertising campaigns could be categorized into 'redefining women's beauty', 'gender equality', 'education', and 'leadership'. The objective of these femvertising campaigns is to change perspectives of the society on women and change men's perspective. In terms of product category by global femvertising campaign companies, it varies from consumer goods, IT & electronics, automotive, finance, toy, non-profit organization to press. In general, femvertising targets women, but some femvertising campaigns also target men. This study also provides implications in regards with media usage strategy and advertising planning strategy.