• Proceedings of the Korean Society of Computer Information Conference
• /
• 2018.01a
• /
• pp.19-20
• /
• 2018

모바일 증강현실 시장은 시장조사업체 카운터포인트리서치가 2021년까지 70조원 규모를 성장을 예측한 것을 비롯하여 많은 자료를 통해 큰 성장을 예고하고 있다. 이러한 증강현실은 현재 더 정교한 증강현실을 위해 디바이스에서 습득한 실제 환경정보를 사용하여 마커 없이도 증강현실을 구현하는 기술을 통해 성장하고있다. 그러므로 성장하는 증강현실시장에 대응하기 위해서는 3D환경을 사용하는 증강현실 기술을 습득할 필요가 있다. 본 논문에서는 탱고기술을 탑재한 기기를 이용하여 3D환경을 습득하고 유니티3D 게임 엔진과 탱고 SDK를 사용하여 카메라 이미지와 3D그래픽이 융합된 자연스러운 증강현실을 구축하는 게임 개발에 대해 설명한다.

• Journal of Korea Game Society
• /
• v.10 no.4
• /
• pp.63-71
• /
• 2010

In this paper, we propose a boundary based marker binary coding method for augmented reality games, which enables the marker-area to be binary coded well in any lighting environments. First, it detects the boundary after transforming an original marker image to a gray scale image, and it executes 4 way pixel extensions for all boundary pixels in order to make the boundary to closed area. Next, for all boundary pixels it compares the brightness of right and left ones of each pixel and allocates black for the lower side and white for the higher side by filling inside area thru the seeded region growing. Experimental results showed that our proposed method produces a good binary marker image recognizable in various light environments. In addition, it showed the possibility of real-time calculation by considering the result of operation speed which is 51 fps for VGA image.

• Journal of the Institute of Electronics Engineers of Korea SP
• /
• v.48 no.2
• /
• pp.1-10
• /
• 2011

In this paper, we propose the algorithm for the AR(Augmented Reality) system, which is robust to the brightness change of light. In the proposed method, the histogram specification is achieved using the sample histogram, obtained from the frames in which the target objects could be detected successful. And When the object key-points couldn't be detected by the displacement of camera positions, the positions of non-detected key-points ware estimated using the linear KF(Kalman Filter). When the proposed algorithm is applied in the AR systems, the object key-points can be detected three times as much as the existing others. In addition, to prove the more efficiency of the proposed algorithm, we implemented the AR game, and could know that the performance is the more advanced than the others. The proposed algorithm can be used for the AR environments, which high efficiency is required such as the AR game, or the implementation of AR systems which are robust to the change of lights, etc.

• Journal of Convergence for Information Technology
• /
• v.12 no.1
• /
• pp.1-6
• /
• 2022

As augmented reality technology becomes more common and prevelant, marker-based AR contents are applied in various ways. However AR contents are still hardly utilized due to the low recognition rate of marker images. In order to increase the recognition rate of AR marker images, this paper experiment and analyzed how much the recognition rate of markers could be improved when image correction and design changes was applied. The experimental result shows that the image correction task could significantly improve the number of image characteristics and the recognition grade if the image was modified in a way its saturation value is increased. Moreover, the recognition rate was improved even more when regular pattern design was added to the original marker image. In conclusion, it was possible to make the marker well recognized through proper correction of the image and additional process of pattern design in the process of producing the marker image.

• International Journal of Computer Science & Network Security
• /
• v.22 no.7
• /
• pp.268-282
• /
• 2022

One of the most important technologies today is augmented reality technology, it allows users to experience the real world using virtual objects that are combined with the real world. This technology is interesting and has become applied in many sectors such as the shopping and medicine, also it has been included in the sector of education. In the field of education, AR technology has become widely used due to its effectiveness. It has many benefits, such as arousing students' interest in learning imaginative concepts that are difficult to understand. On the other hand, studies have proven that collaborative between students increases learning opportunities by exchanging information, and this is known as Collaborative Learning. The use of multimodal creates a distinctive and interesting experience, especially for students, as it increases the interaction of users with the technologies. The research aims at developing collaborative framework for developing achievement of 6th graders through designing a framework that integrated a collaborative framework with a multimodal input "hand-gesture and touch", considering the development of an effective, fun and easy to use framework with a multimodal interaction in AR technology that was applied to reformulate the genetics and traits lesson from the science textbook for the 6th grade, the first semester, the second lesson, in an interactive manner by creating a video based on the science teachers' consultations and a puzzle game in which the game images were inserted. As well, the framework adopted the cooperative between students to solve the questions. The finding showed a significant difference between post-test and pre-test of the experimental group on the mean scores of the science course at the level of remembering, understanding, and applying. Which indicates the success of the framework, in addition to the fact that 43 students preferred to use the framework over traditional education.

• The Journal of the Convergence on Culture Technology
• /
• v.10 no.3
• /
• pp.953-958
• /
• 2024

Recently, there has been growing interest in the Fourth Industrial Revolution, with a particular focus on the advancement of augmented reality (AR) devices. However, there is a shortage of AR content. Augmented reality operates through marker-based and markerless methods. The marker-based approach involves using a camera to capture images that serve as markers, enhancing them through AR principles. To address the scarcity of AR content and improve the quality of character goods, this study proposes integrating AR technology into character goods. The character industry is expanding each year, leading to a diverse range of character goods. Character acrylic stands, among these goods, leverage game, webtoon, and animation character IPs for sales. To enhance the design process, we utilized the character image as a marker, allowing for the creation of content that aligns with the characteristics of the character IP. We selected a webtoon character and developed AR content, incorporating features such as voice, speech bubbles, and an introduction to the webtoon, tailored to the webtoon's characteristics. This study demonstrates the potential of AR to present visual and auditory information, paving the way for a variety of products, including diverse content. We anticipate that utilizing this research will lead to the emergence of products encompassing various contents.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
• /
• 2009.11a
• /
• pp.87-90
• /
• 2009

본 연구는 HMD(Head Mounted Display), 적외선 카메라, 웹 카메라, 데이터 글러브, 그리고 생리신호 측정 센서를 이용한 증강현실 게임 플랫폼 설계를 목적으로 하고 있다. HMD 는 사용자의 머리의 움직임을 파악하고, 사용자에게 가상 물체를 디스플레이화면에 제공한다. 적외선 카메라는 HMD 하단에 부착하여 사용자의 시선을 추적한다. 웹 카메라는 HMD 상단에 부착하여 전방 영상을 취득 후, 현실영상을 HMD 디스플레이를 통하여 사용자에게 제공한다. 데이터 글러브는 사용자의 손동작을 파악한다. 자율신경계반응은 GSR(Galvanic Skin Response), PPG(PhotoPlethysmoGraphy), 그리고 SKT(SKin Temperature) 센서로 측정한다. 측정된 피부전기반응, 맥파, 그리고 피부온도는 실시간 데이터분석을 통하여 집중 정도를 파악하게 된다. 사용자의 머리 움직임, 시선, 그리고 손동작은 직관적 인터랙션에 사용되고, 집중 정도는 직관적 인터랙션과 결합하여 사용자의 의도파악에 사용된다. 따라서, 본 연구는 멀티모달 인터랙션을 이용하여 직관적 인터랙션 구현과 집중력 분석을 통하여 사용자의 의도를 파악할 수 있는 새로운 증강현실 게임 플랫폼을 설계하였다.

• Journal of Korea Game Society
• /
• v.11 no.3
• /
• pp.63-72
• /
• 2011

In this paper, we propose a novel database creation and retrieval method of feature descriptors to support real-time marker-less tracking in the augmented reality environments. Each feature descriptor is encoded by integer and multi-level database is created in order to retrieve a feature descriptor efficiently. The retrieval of a feature descriptor is performed as follows: Firstly, candidate feature descriptors are searched by traversing the multi-level database. Secondly, the euclidean distance between input feature descriptor and each candidate one is compared. The shortest one is retrieved. The proposed method is 16 ms faster than previous KD-Tree method for each feature descriptor.

• Journal of Korea Game Society
• /
• v.20 no.3
• /
• pp.35-44
• /
• 2020

In this study, we propose a reliable command placement recognition algorithm using tangible commands blocks developed for our coding puzzle platform, and present its performance measurement results on an Augmented Reality testbed environment. As a result, it can recognize up to 30 tangible blocks simultaneously and their placements within 5 seconds reliably. It is successfully ported to an existing coding puzzle mobile app and can operate an IoT attached robot via bluetooth connected mobile app.

• Journal of Internet Computing and Services
• /
• v.20 no.2
• /
• pp.1-7
• /
• 2019

The latest mobile applications such as augmented reality, virtual reality, and deep learning can be used efficiently in various fields such as emergency management and game. Accordingly the corresponding applications have been developed for these purposes. However modern mobile applications such as augmented reality and virtual reality increase the energy burden on mobile devices. In order for mobile devices to focus their energy on the latest mobile applications, energy consumption should be minimized for communication and networking, such as cognitive radio. In this paper, we propose a method to reduce the energy consumption of Centralized Cooperative Spectrum Sensing (CCSS) scheme in cognitive radio by devising Stop Reporting Algorithm (SRA). Simulation results show that SRA can reduce energy consumption of mobile devices using cognitive radio.