• The KIPS Transactions:PartA
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• v.17A no.6
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• pp.281-288
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• 2010

In this paper, we describe the development of a system for generating a 3-dimensional human face using 3D scanned facial data and photo images, and morphing animation. The system comprises a facial feature input tool, a 3-dimensional texture mapping interface, and a 3-dimensional facial morphing interface. The facial feature input tool supports texture mapping and morphing animation - facial morphing areas between two facial models are defined by inputting facial feature points interactively. The texture mapping is done first by means of three photo images - a front and two side images - of a face model. The morphing interface allows for the generation of a morphing animation between corresponding areas of two facial models after texture mapping. This system allows users to interactively generate morphing animations between two facial models, without programming, using 3D scanned facial data and photo images.

• Journal of the Korea Computer Graphics Society
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• v.17 no.1
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• pp.9-16
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• 2011

In this paper, we describe the development of a system for generating a 3-dimensional human face and predicting it's appearance as it ages over subsequent years using 3D scanned facial data and photo images. It is composed of 3-dimensional texture mapping functions, a facial definition parameter input tool, and 3-dimensional facial prediction algorithms. With the texture mapping functions, we can generate a new model of a given face at a specified age using a scanned facial model and photo images. The texture mapping is done using three photo images - a front and two side images of a face. The facial definition parameter input tool is a user interface necessary for texture mapping and used for matching facial feature points between photo images and a 3D scanned facial model in order to obtain material values in high resolution. We have calculated material values for future facial models and predicted future facial models in high resolution with a statistical analysis using 100 scanned facial models.

• Journal of Broadcast Engineering
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• v.19 no.4
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• pp.533-546
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• 2014

This paper presents a method for a hybrid (color and depth) camera system construction using a photogrammetric technology. A TOF depth camera is efficient since it measures range information of objects in real-time. However, there are some problems of the TOF depth camera such as low resolution and noise due to surface conditions. Therefore, it is essential to not only correct depth noise and distortion but also construct the hybrid camera system providing a high resolution texture map for generating a 3D model using the depth camera. We estimated geometry of the hybrid camera using a traditional relative orientation algorithm and performed texture mapping using backward mapping based on a condition of collinearity. Other algorithm was compared to evaluate performance about the accuracy of a model and texture mapping. The result showed that the proposed method produced the higher model accuracy.

• Proceedings of the Korea Multimedia Society Conference
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• 2003.11b
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• pp.651-655
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• 2003

본 논문에서는 맞춤 가구 제작 및 제작된 가구의 배치를 위한 효율적이면서도 사용하기 용이한 3D Visual 디스플레이 시스템을 개발하고자 한다. AutoCAD로 만들어진 평면파일(*.dxf) 그리고 3D 제작툴로 만들어진 오브젝트 파일(*.3ds)을 이용하여 현실감 있도록 시뮬레이션 하는 것을 목표로 한다. 2D로 제작된 AutoCAD 평면 설계 파일을 이용하여 평면 파일을 3D 투시도로 변환하고 3DS파일로 구축한 객체들을 배치한 뒤 텍스처매핑, 렌더링 등을 구현하여 최대한 현실감을 낼 수 있도록 개발한다.

• Proceedings of the Korean Information Science Society Conference
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• 2008.06b
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• pp.281-285
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• 2008

본 논문에서는 임의의 두 얼굴간의 얼굴 변형을 시뮬레이션하는 방법으로서 직선형 경로를 이용한 얼굴 모핑 알고리즘을 소개한다. 이 때 두 얼굴 모델은 서로 독립적으로 3D 스캔되어 텍스처매핑을 거쳐서 생성된 별도의 3D 모델로서, 본 알고리즘은 이러한 얼굴 모델들간의 버텍스와 폴리곤의 개수와는 상관없이 자연스러운 모핑을 구현하는 특징을 갖는다. 알고리즘의 주요 기능으로는 절단면의 생성, 3 차원 메쉬의 2D 메쉬화, 대응 영역의 설정, 대응 폴리곤 탐색 및 보간 데이터 추출등이 포함된다.

• Journal of Navigation and Port Research
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• v.40 no.6
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• pp.369-374
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• 2016

Recently, due to the rapid development of smart computing technology, there have been a lot of studies on 3D navigation, and consequently the advanced commercial 3D navigation system and 3D VTS system are on the market. Even the 3D technology is well known and wide spreaded, unfortunately, the secret of code behind is still unleashed. The purpose of this paper is to show the basic methodologies to display ENC features under 3D display environment to meet the requirement of S-52 standards. The OpenGL ES is used to develop 3D ENC Viewer for further use on mobile platforms and web based vessel monitoring system. P articularly, area object triangulation, complex line drawing, polygon pattern filling and symbol drawing by texture mapping are explained in detail. The result of performance test is shown as table for correlation of SENC file size to display speed.