• 한국자동차공학회논문집
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• 제24권6호
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• pp.627-634
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• 2016

In this paper, an augmented video generation method to evaluate the performance of lane departure warning system is proposed. In our system, the input is a video which have road scene with general clean lane, and the content of output video is the same but the lane is synthesized with contamination image. In order to synthesize the contamination lane image, two approaches were used. One is example-based image synthesis, and the other is background-based image synthesis. Example-based image synthesis is generated in the assumption of the situation that contamination is applied to the lane, and background-based image synthesis is for the situation that the lane is erased due to aging. In this paper, a new contamination pattern generation method using Gaussian function is also proposed in order to produce contamination with various shape and size. The contamination lane video can be generated by shifting synthesized image as lane movement amount obtained empirically. Our experiment showed that the similarity between the generated contamination lane image and real lane image is over 90 %. Futhermore, we can verify the reliability of the video generated from the proposed method through the analysis of the change of lane recognition rate. In other words, the recognition rate based on the video generated from the proposed method is very similar to that of the real contamination lane video.

• 대한토목학회논문집
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• 제13권5호
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• pp.191-199
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• 1993

스캐닝된 지상사진의 수치화상데이타를 이용하여 정사투영화상을 작성하는 기법을 제시하였다. 수치화상데이타를 얻기 위하여 촬영된 지상사진을 CCD 카메라 스캐너로 스캐닝한 후, 4차 다항식을 적용하여 스캐닝과정에서 생긴 기하왜곡을 보정하였다. 좌우 화상에 있어서 각 화소의 동일점을 찾기 위하여 자동매칭기법을 적용하였으며 외부표정요소를 이용한 공간교차이론으로 각 화소의 3차원 지상좌표를 구하였다. 얻어진 3차원 지상좌표와 우측화상데이타값으로부터, 거리의 역에 따른 가중평균법을 사용하여 1개 화소의 크기가 $1mm{\times}1mm$ 되는 정사투영화상을 작성하였다. 검사점에 대하여, 작성된 정사투영화상상의 X 및 Y좌표와 지상관측된 좌표를 비교하여 정사투영화상 작성기법의 유효성을 검증할 수 있었다.

• Journal of Electrical Engineering and information Science
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• 제3권2호
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• pp.202-210
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• 1998

This paper is concerned with an efficient generation of stereoscopic views for complex virtual environments by exploiting frame coherence in visibility. The basic idea is to keep visible polygons throughout the rendering process. P-buffer, a buffer of image size, holds the id of the visible polygon for each pixel. This contrasts to the frame buffer and the Z-buffer which hold the color information and the depth information, respectively. For the generation of a consecutive image, the position and the orientation of the visible polygons in the current view are updated according to the viewer's movements, and re-rendered on the current image under the assumption that, when the viewer moves slightly, the visibility of polygons remains unchanged. In the case of stereoscopic views, it may not introduce much difficulty when we render the right(left) image using visible polygons on the (right) image only, The less difference in two images is, the easier the matching becomes in perceiving depth. Some psychophysical experiments have been conducted to support this claim. The computational complexity for generating a fight(left) image from the previous left(right) image is bounded by the size of image space, and accordingly. It is somewhat independent of the complexity of the 3-D scene.

• 한국군사과학기술학회지
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• 제25권5호
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• pp.476-486
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• 2022

Synthetic dynamic infrared image generation from the given virtual environment is being the primary goal to simulate the output of the infra-red(IR) camera installed on a vehicle to evaluate the control algorithm for various search & reconnaissance missions. Due to the difficulty to obtain actual IR data in complex environments, Artificial intelligence(AI) has been used recently in the field of image data generation. In this paper, CycleGAN technique is applied to obtain a more realistic synthetic IR image. We added the Structural Similarity Index Measure(SSIM) loss function to the L1 loss function to generate a more realistic synthetic IR image when the CycleGAN image is generated. From the simulation, it is applicable to the guided-missile flight simulation tests by using the synthetic infrared image generated by the proposed technique.

• Journal of information and communication convergence engineering
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• 제7권4호
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• pp.551-555
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• 2009

This paper proposes a signal generation method for automatic control of a monitoring camera. Using the control signal, the monitoring camera can track a moving object and keep it near the image center for a longer time. The proposed method is estimated in the experiments that automatically move a maker located at the specified position to the image center.

• Journal of Information Processing Systems
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• 제2권3호
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• pp.189-193
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• 2006

In this study we propose an automatic reading system for diagnostic DNA chips. We define a general specification for an automatic reading system and propose a possible implementation method. The proposed system performs the whole reading process automatically without any user intervention, covering image acquisition, image analysis, and report generation. We applied the system for the automatic report generation of a commercialized DNA chip for cervical cancer detection. The fluorescence image of the hybridization result was acquired with a $GenePix^{TM}$ scanner using its library running in HTML pages. The processing of the acquired image and the report generation were executed by a component object module programmed with Microsoft Visual C++ 6.0. To generate the report document, we made an HWP 2002 document template with marker strings that were supposed to be searched and replaced with the corresponding information such as patient information and diagnosis results. The proposed system generates the report document by reading the template and changing the marker strings with the resultant contents. The system is expected to facilitate the usage of a diagnostic DNA chip for mass screening by the automation of a conventional manual reading process, shortening its processing time, and quantifying the reading criteria.

• Human Ecology Research
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• 제61권4호
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• pp.647-661
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• 2023

This study explored the relationship between Generation MZ female consumers' participation in sports activity, consumption of body-exposing sportswear, body-esteem, and appearance management behavior. In-depth interviews were conducted with twenty Generation MZ female consumers who regularly participate in sports activity and consume body-exposing sportswear. Based on transcriptions of in-depth interviews conducted with research subjects, the researcher and two assistant researchers collectively categorized and compared common characteristics found in their responses, categorized according to themes using units of words/terms and paragraphs. The main finding were as follows. Firstly, Generation MZ female consumers participated in various sports activities for an average of approximately one hour, three times per week. The effects of such participation were improvements in physical and psychological health. Secondly, Generation MZ female consumers considered aesthetical, functional, and economical factors when they consumed body-exposing sportswear, regardless of the activity in which they participated. This sportswear served to increase the efficiency of exercise and also played a motivational role. Thirdly, the overall body-esteem of Generation MZ female consumers who participated in sports activity regularly and consumed body-exposing sportswear was high. Fourthly, Generation MZ female consumers who regularly participated in sports activity and consumed body-exposing sportswear were practicing active appearance management behavior in order to show how their body had been shaped by sports activity. In addition, they were pursuing four self-images: "polished image pursue", "self-care image pursue", "natural image pursue", and "trustworthy image pursue".

• 제어로봇시스템학회논문지
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• 제8권10호
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• pp.874-880
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• 2002

A number of techniques have been proposed for 3D display using view-difference of two eyes. These methods do not express enough reality like real world. The display images have to change according to the position of a viewer to improve reality. In this paper, we present an approach for generating intermediate image between two different view images by applying new image interpolation algorithm The interpolation algorithm is designed to cope with complex shapes. The proposed image interpolation algorithm generates rotated image about vertical axes by any angle from base images. Each base image that was obtained from CCD camera has an view-angle difference of $3^{\circ}C$, $5.5^{\circ}C$, $^{\circ}C$, $22^{\circ}C$, and $45^{\circ}C$. The proposed into mediate image generation method uses the geometric analysis of image and depth information through the block-based matching method.

• 한국컴퓨터그래픽스학회논문지
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• 제29권3호
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• pp.79-84
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• 2023

이미지 생성 모델은 다양한 분야에 적용되어 데이터 부족 문제와 시간 및 비용 문제를 극복하고 있다. 그러나 규칙적 패턴 이미지에서의 이미지 생성과 해당 데이터의 결함 검출에는 한계를 가진다. 본 논문에서는 이미지 생성 모델의 패턴 이미지 생성의 가능성을 확인하고 OLED 패널의 결함 검출을 위한 데이터 증강에 적용하였다. OLED 결함 검출 모델을 학습하기 위해 필요한 데이터는 OLED 패널의 높은 비용 문제로 실제 데이터 세트를 확보하기 어렵다. 그렇기 때문에 해당 데이터 세트를 확보한다 하더라도 여러가지 결함 유형을 정의하고 분류하는 작업이 필요하다. 이를 위한 가상의 기반 데이터 세트를 획득할 OLED 패널 결함 데이터 획득 시스템을 소개하고, 이미지 생성 모델로 해당 데이터를 증강한다. 또, 확산모델에서의 패턴 이미지 생성의 어려움을 확인하여 가능성을 제안하고, 이미지 생성 모델 이용한 데이터 증강 및 결함 검출 데이터 증강의 제한 사항을 개선하였다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2019년도 춘계학술대회
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• pp.265-267
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• 2019

이 논문에서는 유전자 알고리즘을 이용하여 기존 이미지와 유사한 흑백 이미지를 자동으로 생성하는 기법을 제안한다. 유전자 알고리즘을 현실 문제에 적용하기 위해 가장 중요한 설계 요소인 유전자 모델링을 어떻게 할 것인지에 대하여 2가지 기법을 제안하였다. 제안한 각 기법을 이용하여 2가지 크기의 흑백 영상으로 실험을 진행하였다. 실험 결과, 이미지 생성을 위한 유전자 모델링에 있어서 각 기법의 진화 성능에 큰 차이가 있음을 확인하였다. 따라서 향후 기존 이미지와 유사한 이미지를 생성하거나, 서로 다른 이미지를 합성한 이미지를 생성하기 위해 빠르고 자연스럽게 학습시키기 위해서는 유전자 모델링을 신중하게 결정해야 함을 파악할 수 있다.