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Studies of Soybean Improvement by γ-ray and Chemical Mutagens -I. Comparison of the effects of EMS, Ei, and γ-rays in soybean(preliminary report) (돌연변이 유기에 의한 대두 품종개량연구 -I. 대두에 대한 EMS, EI 및 γ선처리효과비교(예보))

  • Shin-Han Kwon;Kun-Hyuk Im;Cheong-Yeol Sohn;Jong-Sun Eun
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.7 no.1
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    • pp.139-144
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    • 1969
  • 1. In order to obtain useful mutants such as early maturity, resistance to lodging, high protein and oil content, and capability of high yield, dormant seeds of two soybean varieties, Jang Dan Baik Mok and Clark, were treated with γ-ray, Ethyl Methane Sulfonate(EMS), Ethylene Imine(EI)and combinations of γ-ray and EMS or EI. 2. The germination rate and survival rate in a variety Jang Dan Baik Mok were significantly decreased with γ-ray treatment while it was not the same in the Clark variety. A significant decrease for seedling height measured at 14 and 21 days after sowing was found with the increase of γ-ray dose in both varieties. 3. Germination rates in both varieties were significantly decreased as EI concentration increases, particularly severe damage in germination was observed at 0.008 Mo. concentration. Germination rate damages were found with EMS concentration increases in the variety Jang Dan Baik Mok while no regular responses in seedling height were observed in the variety Clark. 4. Germination rate was significantly lowered with the combined treatment of EMS and γ-ray 24KR than that of EMS alone. In the treatments of γ-ray with three levels of EI concentration, the combined treatments except 24KR+EI 0.002 Mol. resulted in better germination than of EI alone. In both varieties, significant reduction in seedling height was observed in the combined treatments of γ-ray with various concentrations of EMS, whereas stimulation effect on seedling height was found with treatment of γ-ray EI +0.08Mol. 5. Germination rate, survival rate, and plant height as criteria of radio sensitivity, variety Jang Dan Baik Mok is moze sensitive to γ-ray, EMS, and EI than the variety Clark, and the varietal difference in responsibility to mutagen may be due to the genetic-constitution of the varieties.

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Printmaking Style Effect using Image Processing Techniques (영상처리 기법을 이용한 판화 스타일 효과)

  • Kim, Seung-Wan;Gwun, Ou-Bong
    • The Journal of the Korea Contents Association
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    • v.10 no.4
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    • pp.76-83
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    • 2010
  • In this paper, we propose a method that converts a inputted real image to a image feeling like printmaking. That is, this method converts a inputted real image to man made rubber printmaking style image using image processing techniques such as spatial filters, image bit-block transfer, etc. The process is as follows. First, after detecting edges in source image, we get the first image by deleting noise lines and points, then by sharpening. Secondly, we get second image using the similar method to the first image. Finally, we blend the first and the second image by logical AND operation This processing enables us to represent rubber panel and knife effects. Also, the proposed method shows that double edge detecting is effective in enhancing line-width and removing the tiny lines.

Algorithm for extracting region of interest in medical images using image processing techniques (영상처리 기법을 이용한 의료 영상에서 관심영역 추출 알고리즘)

  • Cho, Young-bok;Woo, Sung-hee
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2018.10a
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    • pp.295-298
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    • 2018
  • The proposed paper proposes an algorithm that automatically extracts the region of interest using image processing techniques for medical images. In general, the robust boundary segmentation technique provides robust and accurate segmentation results in object boundaries with various noise and direction generated during image acquisition through optimal segmentation of the edges considering noise characteristics and directionality in noise images. In this paper, it is possible to apply adaptive filter type and size to the structural information of the image object and apply it to the boundary division of various object objects. In addition, it is possible to divide the boundary between various noise images such as an ultrasound image and an optical image.

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Image Edge Detection Technique for Pathological Information System (병리 정보 시스템을 위한 이미지 외곽선 추출 기법 연구)

  • Xiao, Xie;Oh, Sangyoon
    • KIPS Transactions on Software and Data Engineering
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    • v.5 no.10
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    • pp.489-496
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    • 2016
  • Thousands of pathological images are produced daily per hospital and they are stored and managed by a pathology information system (PIS). Since image edge detection is one of fundamental analysis tools for pathological images, many researches are targeted to improve accuracy and performance of image edge detection algorithm of HIS. In this paper, we propose a novel image edge detection method. It is based on Canny algorithm with adaptive threshold configuration. It also uses a dividing ruler to configure the two threshold instead of whole image to improve the detection ratio of ruler itself. To verify the effectiveness of our proposed method, we conducted empirical experiments with real pathological images(randomly selected image group, image group that was unable to detect by conventional methods, and added noise image group). The results shows that our proposed method outperforms and better detects compare to the conventional method.

Development of SoC Sensor Chip based on PLC technology for Distribution Automation System (배전자동화를 위한 전력선통신 제어 칩 개발)

  • Kim Young-Hyun;Park Byung-Seok;Choi Moon-Seok;Ju Sung-Ho;Choi In-Ji
    • Proceedings of the KIPE Conference
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    • 2006.06a
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    • pp.31-33
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    • 2006
  • 최근 IT 기술의 발달로 배전자동화 시스템에 많은 통신방식들이 적용되고 있다. 이 중에서 기존 인프라를 사용하는 방식인 전력선통신 기술은 가장 효율적인 통신방식으로 언급되고 있다. 이를 배전자동화 시스템에 적용하기 위해서는 별도의 신호처리 장치와 통신장치가 필요하나, 비용, 설치 및 운영의 불편함으로 확대 적용에 많은 애로점을 가지고 있다. 본 논문에서는 이러한 문제점을 해결하기 위해 SoC 기술을 이용 전력선 통신을 위한 통신 모듈과 고해상도 아나로그 디지털 변환기, 제어용 신호를 처리하는 전용 디지털 신호처리 장치를 결합, 하나의 칩으로 설계하여 경량, 박막화를 실현하였다. 이로 인해 구성부품이 최소화되면서 개발과정이 단축되고, 성능, 전력 소비면에서 유리하며, 다양한 기능을 구비한 전력선통신기반 제어 시스템을 설계할 수 있다.

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A Study on the Long Baseline Processing for GPS Surveying (GPS 장기선 해석에 관한 기초 연구)

  • 최윤수;고준환;이기도
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.21 no.2
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    • pp.123-129
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    • 2003
  • This study analyzed and compared the results of baseline processing by Bernese GPS software packages and by GPSurvey software respectively. Then it investigated considerations when very long baselines are processed. There are rarely differences which is accompanied by baseline length when it is processed by Bernese GPS software but there are somewhat differences in proportion to the baseline length when it is processed by GPSurvey software.

효율적인 생식선 카이메라 생산을 위한 최적 조건 확립에 관한 비교 연구

  • 김진남;박태섭;송권화;이영목;권혁모;한재용
    • Proceedings of the Korea Society of Poultry Science Conference
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    • 2001.11a
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    • pp.71-73
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    • 2001
  • In this study, we could improve transmission efficiency of germline chimeras by transfer of gonadal PGCs (gPGCs) cultured in vitro. Of hatched recipient chicks, 301 chickens (141 males and 160 females) were brought up to sexual maturity and these WLs (KOC) were mated with KOCs for testcross, resulting in 27 germline chimeras (15 males and 12 females) identified by black feather color of their progenies. The production efficiency of germline chimera production of experimental groups was observed (P=0.6831). The average transmission efficiency of proven germline chimeras was 0.6 ∼56.5% (15.0% on average). The transmission efficiency of experimental group which were transferred 10-days cultured gPGCs without Ficoll treatment was highest (49.7%) and that of experimental stock which transferred non-cultured gPGCs with Ficoll treatment was lowest (0.6%). The duration of in vitro culture before transferring was significantly important for the high efficiency of germline transmission. Transferring 10-days cultured gPGCs made the transmission efficiency higher rather than transferring non-cultured and 5-days cultured gPGCs, 50 times and 10 times, respectively (p<0.0001). However, Ficoll treatment for increasing the population ratio of gPGCs negatively affected the transmission efficiency and the effects of sexuality and the reciprocal interaction between treatments showed no significant differences. These findings demonstrated that the crucial factors for improving the germline transmission were the duration of in vitro culture prior to transfer. Thus, we developed the complete system for production of germline chimera using cultured gPGCs with highly improved efficiency and this system would be useful for genetic manipulation and obtaining the transgenic aves.

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Storage Characteristics of Irradiated Pacific Oysters, Crassostrea gigas (감마선에 쬔 참굴의 저장성)

  • CHUNG Jong Rak
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.2 no.1
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    • pp.41-46
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    • 1969
  • 산란기 직전의 참굴(Crussostrea gigas)을 통상 방법으로 개각하여 0.3 및 2.0 Mrad의 감마선에 각기 쬔 후 0C의 온도하에 저장기간중 번식하는 총 세균수와 pH 변화를 측정하고 부패상을 관찰함으로씨 방사선을 쬔 참굴의 저장성을 조사하였다. 자외선을 쬔 무균해수에 개각하지 않고 정화시킨 굴과 보통 해수에 수용하였던 굴을 비교하여 정화 처리에 의한 세균 제거의 효율을 조사하였으나 4-5일의 장기간 처리에도 불구하고 별다른 세균제거 결과를 볼 수 없었다. 이것은 굴이 보유하고 있는 본래의 총 세균수가 적기 때문이라고 추측된다. 감마선을 쬐지 않은 굴은 저장 15일째에 부패했음이 완연했으나 0.3 Mrad의 감마선을 쬔 굴은 35일후 까지도 시큼할뿐 별로 변질되지 않았다. 2.0 Mrad의 감마선을 쪼인 굴은 관능상의 선도 유지에 있어서 0.3 Mrad로 쬔 굴보다 휠씬 나빴고 off-odor가 심했다. 굴 저장중의 pH 변화로 선도를 판정함은 그 신빙성이 극히 희박하였고 선도의 저하와 함께 pH가 내려간다는 일반적인 인식과는 달리 어류부패의 경우와 같이 저장 초기에는 약간 하강하나 부패의 진행과 함께 상승함이 확인되었다.

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Visualization of Geographic Information Using Contour Simplification (등고선 간략화에 의한 지리정보의 복원 가시화)

  • Kim, Jong-Bok;Koh, Chan
    • Proceedings of the Korean Information Science Society Conference
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    • 1998.10c
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    • pp.647-649
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    • 1998
  • 본 논문에서는 다각 근사화 방법과 래스터 기반 연산 알고리즘을 이용하여 평면 지도상에 나타난 등고선을 3차원 가시화(Visualization)하여 보여준다. 다각 근사화 방법은 입력한 등고선에 대한 특징을 반영할 수 있는 최소한의 선형구분 오차 임계값을 이용하여 등고선에 근사화 시킨 것으로 저장 데이터의 양을 축소할 수 있다. 래스터 기반 알고리즘은 이웃한 두 개의 등고선 내부점의 높이 값을 그 점에서 두 등고선까지의 최단거리 및 등고선의 높이값을 변수로 하는 선형보간식으로 정의하고, 거리변환 연산을 도입하여 계산하는 알고리즘으로 구현이 용이하며, 간단한 계산만을 수행하기 때문에 처리 방법이 간단하다는 장점을 갖는다. 본 논문에서는 래스터 방법만을 이용한 복원보다 자료의 양이 감소함을 보였고, 전체 처리과정의 간단함과, 3차원 가시화된 등고선을 그래프 좌표상의 X, Y, Z축으로 원하는 각도만큼씩 회전시키며 관찰 할 수 있도록 하였다. 본 연구를 통해 지형의 특징을 원형 등고선과 유사하게 유지하면서, 데이터 양을 축소하고 계산식을 간략화된 효과적인 지형정보 시각화를 보여주었다.

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The Optimization for Partial Denoising Boundary Image Matching (부분 노이즈 제거 윤곽선 이미지 매칭의 성능 최적화)

  • Kim, Bum-Soo;Lee, Sanghun;Moon, Yang-Sae
    • Annual Conference of KIPS
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    • 2014.11a
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    • pp.729-732
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    • 2014
  • 본 논문에서는 부분 노이즈 제거를 지원하는 윤곽선 이미지 매칭의 성능 최적화 문제를 다룬다. 윤곽선 이미지 매칭에서 이미지의 노이즈를 제거하는 것은 직관적이고 정확한 매칭을 위해 매우 중요한 요소이다. 그러나, 윤곽선 이미지 매칭에서 부분 노이즈 제거를 지원하기 위해서는 매우 많은 계산이 빈번하게 발생한다. 본 논문에서는 기존 부분 노이즈 제거 윤곽선 이미지 매칭 연구를 좀 더 구체화하여 성능 향상을 위해 유사 거리의 하한을 제안한다. 실험 결과, 부분 노이즈 제거 윤곽선 이미지 매칭 성능을 수 배에서 수십 배까지 향상시킨 것으로 나타났다.