• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.11 no.2
• /
• pp.337-343
• /
• 2007

Since three-dimensional (3D) images reconstructed in interval imaging technique are related to the resolution of elemental images, there has been a problem that ray information of elemental images increases largely in order to obtain high-resolution 3D images. In this paper, to overcome this problem, a new unidirectional integral imaging based on pinhole model is proposed. Proposed method provides a new type of unidirectional elemental images, which are simply obtained by magnifying single horizontal pixel line of each elemental image to the vertical size of lenslet using ray analysis based on pinhole model and used to display 3D images. In proposed method, reduction effect of the ray information of elemental images can be obtained by scarifying vortical parallax. Feasibility of the proposed scheme is experimentally demonstrated and its results are presented.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2022.05a
• /
• pp.235-237
• /
• 2022

Video content is divided into long-form video content and short-form video content according to the length. Long form video content is created with a length of 15 minutes or longer, and all frames of the captured video are included without editing. Short-form video content can be edited to a shorter length from 1 minute to 15 minutes, and only some frames from the frames of the captured video. Due to the recent growth of the single-person broadcasting market, the demand for short-form video content to increase viewers is increasing. Therefore, there is a need for research on content editing technology for editing and generating short-form video content. This study studies the technology to create short-form videos of main scenes by capturing images, voices, and motions. Short-form videos of key scenes use a pre-trained highlight extraction model through machine learning. An automatic video editing system and method for automatically generating a highlight video is a core technology of short-form video content. Machine learning-based automatic video editing method and system research will contribute to competitive content activities by reducing the effort and cost and time invested by single creators for video editing

• Journal of Korea Multimedia Society
• /
• v.9 no.7
• /
• pp.894-903
• /
• 2006

Rapid technology growth of hardware have brought about development and expansion of various digital motion pictured information including 3-Dimension. 3D digital techniques can be used to be diversity in Animation, Virtual-Reality, Movie, Advertisement, Game and so on. 3D characters in digital motion picture take charge of the core as to communicate emotions and information to users through sounds, facial expression and characteristic motions. Concerns about 3D motion and facial expression is getting higher with extension of frequency in use and range about 3D character design. In this study, the facial expression can be used as a effective method about implicit emotions will be studied and research 3D character's facial expressions and muscles movement which are based on human anatomy and then try to find effective method of facial expression. Finally, also, study the difference and distinguishing between 2D and 3D character through the preceding study what I have researched before.

• Journal of the Institute of Convergence Signal Processing
• /
• v.8 no.3
• /
• pp.163-170
• /
• 2007

In this paper, we propose that the polyphase scaler whose performance to that of the bicubic method, has less complexity in hardware structure. In order to get the new information, proposed system is based on the group delay which is one of the digital filter characteristics. The performance of this system is superior to that of bicubic algorithm which is well known. Because the hardware structure is simpler than other image scalers, we can adopt this system for mobile devices easily. The previous polyphase filters make blurring noise which is generated by up-scaling. We replace polyphase filters by boost-up filter to get vivid image. The proposed scaler is verified by Xilinx Virtex2 FPGA and is used as digital Boom in mobile camera phone.

• Journal of Korean Academy of Oral and Maxillofacial Radiology
• /
• v.20 no.1
• /
• pp.71-78
• /
• 1990

This research was made to investigate the change of the image layer and of the vertical and horizontal magnification on the Panelipse radiographic image by the control of profile index. Using the Panelipse, a series of 60 exposures were taken with the steel balls placed in the holes of the plastic model plate, and then evaluated by 4 observers. Two points were assigned for a reading of sharp, one for middling sharp, and zero for unsharp. Each ball image then could be given a total reader score of 0 to 8. The author analyzed the image layer as defined by a sharpness score of 6 or more. The results obtained were as follows: As the profile index was increased, the shape of the image layer was not changed, and the width of the image layer was increased, and the position of the layer shifted away from the rotation center. As the profile index was increased, the ranges of vertical and horizontal magnification was increased, especially the ranges of horizontal magnification was greater than that of vertical magnification.

• Journal of KIISE:Software and Applications
• /
• v.37 no.7
• /
• pp.573-577
• /
• 2010

Image resolution improvement is commonly technique for applications such as image reconstruction or enlargement. It is important to remove image quality degradation such as blocking effect or artificiality occurrence. In this paper, we propose image resolution improvement method using loss information of image. The proposed compute and estimate by low level interpolation of obtained low resolution image, it is applied by interpolated high resolution as 1-stage interpolation. We generate last interpolation image by iteration of error computation and application between obtained low resolution image and 1-stage interpolation image. By experiments using same test images, we confirmed improvement over 3.2dB of average PSNR and enhancement of subject image quality. Also, we can reduce more than 85% computation complexity. The proposed image resolution improvement method may be helpful for various applications of image processing.

• Venture DIGEST
• /
• s.57
• /
• pp.9-9
• /
• 2004

CD 1~2장의 크기로 DVD 수준의 화질과 음질을 보장해주는 뛰어난 압축률의 Divx파일이 보편화되면서 보다 현장감 있는 영상을 큰 화면의 TV에서 즐기려는 이들이 늘고 있다. 기존 TV의 해상도 문제와 모니터의 응답속도 문제를 보완해주는‘디빅스플레이어’들이 속속 시장에 출시되면서 DVD콤보의 차세대 제품으로 주목받고 있다. 홈시어터의 보급과 더불어 디빅스플레이어의 수요는 앞으로 더욱 확대될 전망이다.

• Cartoon and Animation Studies
• /
• s.5
• /
• pp.472-475
• /
• 2001

논고에 제시한 작품의 제작 과정과 발표를 토해보편성을 가진 실사의 동영상 이미지들을 프레임(frame)이라는 구조적 차원으로 확대하고 분석하여 시간속의 이미지와 음의 관계를 파악하고, 환원하여 이를 통한 시각적 훈련과 교육의 방법적 기틀을 마련함으로써 애니메이션의 학문적 가능성을 파악하고자 한다.

• Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
• /
• 2003.04a
• /
• pp.497-500
• /
• 2003

본 연구는 지적행정의 기능과 역할을 확대하기 위한 하나의 방안으로 임야와 농경지를 대상으로 항공사진측량에 의한 수치정사영상지적도의 제작 및 활용방안을 제시하고자 한다.

• Proceedings of the Korean Institute of Communication Sciences Conference
• /
• 2004.07a
• /
• pp.342-342
• /
• 2004