• Journal of Korea Game Society
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• v.12 no.5
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• pp.57-66
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• 2012

This paper to the scene to fit the fluid can be expressed as cartoon-style real-time method is proposed. As a matter of fact the fluid color in the simulation in which both reflection refraction and color tones are different in both cases. This paper light, water, terrain, time, etc. with cartoon-style representation of the fluid, adaptive way is proposed. Experimental implementation of the existing and proposed methods were compared with the results. This cartoon-style rendering of the existing research methods and the proposed method and at the same time using cartoon-style games that can be represented by the entire system could offer.

• The Journal of the Korea Contents Association
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• v.8 no.11
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• pp.154-161
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• 2008

Rapidly changing 3D rendering technology is expanding its fields of display fast towards Non-Photorealistic Rendering beyond Photorealistic Rendering. It is now attainable to realize conventional 2D visual animated cartoons with 3D animation technology. It is not complex to create two shades of color or more with the rendered outcomes, made by Toon-Shading, of 3D total packaging animation Maya with black outlines brought through the process of 2D animation. It the reality of 3D animation being one of the prevalent mechanisms of animated films, it is valuable for familiarized animated cartoons to be realized by the technology of 3D animation. Thus, I hope to help in many ways create more effective 3D cartoon animation production process by optimized Toon-Shading attributes method and technology in this research.

• Cartoon and Animation Studies
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• s.40
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• pp.139-155
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• 2015

Animation is completed in accordance with the original planning of visual direction in the process of post-production. Especially, a variety of visualization skills to meet the planning idea are directed in editing and compositing processes such as rendering and shading in the production of 3D animation. Therefore, the studies how to implement these visual effects have been conducted since the emergence of the animation. The rendering method which appears in the recent animations so often is the effect of 2D animation style although it is applied by 3D technique. 3D animation can be classified as two types including photo realistic and non-photo realistic renderings. The former is to render the images realistically while the latter is to highlight the formative effect with analogue style free from the realism of the photographs. Visual effect of 2D animation is non-realistic, that is, non-photo realistic rendering. The animations produced by this method have the depth of 3D animation expression in terms of space and animating, and can direct the viewer-friendly analogue style visuals, which are widely used as a post-production effect. Hence in this study, we selected a short animation, 'Paperman,' one of Disney's animations, produced by cartoon rendering method which belongs to the class of non-photo rendering technique in 3D graphics, as our subject. We analyzed their techniques and visual effects of the scenes expressed by cartoon rendering method so as to understand whether they meet the original direction idea with the composition work. In addition, we expect further developments of post-production methods, exceeding the limit of graphic expression in alignment with the trend that has become more various in the types and genres of non-photo rendering.

• Korea Multimedia Society
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• v.9 no.3_4
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• pp.54-64
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• 2005

• Proceedings of the Korean Information Science Society Conference
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• 2006.06a
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• pp.112-114
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• 2006

기존의 컴퓨터 그래픽이 추구하던 사실적 모사와는 다른 비사실적 기법(Non-Photorealistic Rendering)을 3차원 그래픽에 적용함으로써 사용자에게 보다 원활한 커뮤니케이션을 제공할 수 있게 되었다. 이러한 NPR 기법 중 카툰 렌더링은 사용자에게 친숙한 환경을 제시함으로써 수용자가 관련 컨텐츠에 집중을 할 수 있도록 해 많은 분야에서 사용되고 있는 실정이다. 특히 NPR 기법을 최근 증가하고 있는 모바일 컨텐츠에 적용하는 연구들도 활발히 진행되고 있다. 그러나 기존 모바일 연구에서의 연구는 전처리를 위한 카툰 렌더링 처리 정도 밖에 없었다. 본 논문은 모바일 기기에서의 사용자 정의에 의한 쉐이딩 기법 구현을 위해, 모바일 NPR 전처리 파일 대체 기법과 음영 단계를 위한 역학적 기법을 제안한다. 이 기법을 사용함으로써 사용자는 자신의 선호도에 따라 3D 모델을 보다 예술적으로 표현할 수 있어 다양한 모바일 분야에 적용이 가능하게 된다.

• 한국HCI학회:학술대회논문집
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• 2008.02a
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• pp.445-450
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• 2008

본 논문에서는 객체의 인식성을 높이기 위해 가상의 지역 광원을 사용한 카툰 렌더링 기법을 제안한다. 지역 광원은 각 메쉬의 기하 정보를 분석하여 배치되며 객체의 지역적인 음영 대비를 증가시켜 객체의 모양과 특정이 눈에 잘 띄도록 한다. 하지만 지역 광원을 사용한 쉐이딩 기법은 객체의 일부 영역에서 갈라지고 불연속적인 음영을 만들어 이미지의 질적 하락을 초래한다. 이러한 현상을 막기 위하여 곡률과 샐리언시의 개념을 사용하여 영역의 특성에 따라 차등적으로 지역 광원을 객체에 적용하였다. 곡률은 해당 영역의 기하적 특성을 구분하여 지역 광원에 의한 음영 대비 증감을 조정하고, 샐리언시는 영역의 중요도를 판별하여 곡률이 쉐이딩에 미치는 가중치를 조절한다.

• Digital Contents
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• no.8 s.123
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• pp.60-61
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• 2003

3차에 걸친 클로즈 베타테스트를 성공적으로 마치고 지난달 16일 오픈 베타베스트에 들어간 '씰 온라인'은 그리곤 엔터테인먼트에서 2000년에 출시한 패키지 게임 '씰(seal)'의 세계관을 계승한 풀 카툰렌더링 3D 온라인 게임이다.

• Journal of the Korea Computer Graphics Society
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• v.23 no.2
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• pp.11-22
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• 2017

This study proposes IMToon(IMage-based carToon) which is an image-based cartoon authoring system using an image processing algorithm. The proposed IMToon allows general users to easily and efficiently produce frames comprising cartoons based on image. The authoring system is designed largely with two functions: cartoon effector and interactive story editor. Cartoon effector automatically converts input images into a cartoon-style image, which consists of image-based cartoon shading and outline drawing steps. Image-based cartoon shading is to receive images of the desired scenes from users, separate brightness information from the color model of the input images, simplify them to a shading range of desired steps, and recreate them as cartoon-style images. Then, the final cartoon style images are created through the outline drawing step in which the outlines of the shaded images are applied through edge detection. Interactive story editor is used to enter text balloons and subtitles in a dialog structure to create one scene of the completed cartoon that delivers a story such as web-toon or comic book. In addition, the cartoon effector, which converts images into cartoon style, is expanded to videos so that it can be applied to videos as well as still images. Finally, various experiments are conducted to verify the possibility of easy and efficient production of cartoons that users want based on images with the proposed IMToon system.

• Proceedings of the Korean Society of Computer Information Conference
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• 2020.01a
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• pp.206-207
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• 2020

본 논문에서는 웹툰에서 사용되는 대규모 군중 격투씬을 표현하기 위하여 Unity3D 엔진을 사용하는 방법에 대해 연구하였다. 웹툰에서는 대규모 군중을 표현할 때 그 작업량을 줄이고 속도를 올리기 위해 여러 가지 자동화 방법을 고려하고 있고, 빠른 피드백과 실시간 렌더링, 쉬운 조작이 가능한 게임 엔진은 이 경우에 매우 유용한 도구가 될 수 있다.

• The Journal of the Korea Contents Association
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• v.11 no.8
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• pp.123-133
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• 2011

In this paper, we propose a new method for toon shading using 3D texture which renders 3d objects in a cartoon style. The conventional toon shading using 1D texture displays shading tone by computing the relative position and orientation between a light vector and surface normal. The 1D texture alone has limits to express the various tone change according to any viewing condition. Therefore Barla et. al. replaces a 1D texture with a 2D texture whose the second dimension corresponds to the view-dependent effects such as level-of-abstraction, depthof-field. The proposed scheme extends 2D texture to 3D texture by adding one dimension with the geometric information of 3D objects such as curvature, saliency, and coordinates. This approach supports two kinds of extensions for cartoon style diversification. First, we support "shape exaggeration effect" to emphasize silhouette or highlight according to the geometric information of 3D objects. Second, we further incorporate "cartoon specific effect", which is examples of screen tone and out focusing frequently appeared in cartoons. We demonstrate the effectiveness of our approach through examples that include a number of 3d objects rendered in various cartoon style.