• 제목/요약/키워드: Local HE

검색결과 450건 처리시간 0.022초

Blending of Contrast Enhancement Techniques for Underwater Images

  • Abin, Deepa;Thepade, Sudeep D.;Maitre, Amulya R.
    • International Journal of Computer Science & Network Security
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    • 제22권1호
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    • pp.1-6
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    • 2022
  • Exploration has always been an instinct of humans, and underwater life is as fascinating as it seems. So, for studying flora and fauna below water, there is a need for high-quality images. However, the underwater images tend to be of impaired quality due to various factors, which calls for improved and enhanced underwater images. There are various Histogram Equalization (HE) based techniques which could aid in solving these issues. Classifying the HE methods broadly, there is Global Histogram Equalization (GHE), Mean Brightness Preserving HE (MBPHE), Bin Modified HE (BMHE), and Local HE (LHE). Each of these HE extensions have their own pros and cons and thus, by considering them we have considered BBHE, CLAHE, BPDHE, BPDFHE, and DSIHE enhancement algorithms, which are based on Mean Brightness Preserving HE and Local HE, for this study. The performance is evaluated with non-reference performance measures like Entropy, UCIQE, UICM, and UIQM. In this study, we apply the enhancement algorithms on 300 images from the UIEB benchmark dataset and then apply the techniques of cascading fusion on the best-performing algorithms.

Contrast Enhancement using Histogram Equalization with a New Neighborhood Metrics

  • Sengee, Nyamlkhagva;Choi, Heung-Kook
    • 한국멀티미디어학회논문지
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    • 제11권6호
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    • pp.737-745
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    • 2008
  • In this paper, a novel neighborhood metric of histogram equalization (HE) algorithm for contrast enhancement is presented. We present a refinement of HE using neighborhood metrics with a general framework which orders pixels based on a sequence of sorting functions which uses both global and local information to remap the image greylevels. We tested a novel sorting key with the suggestion of using the original image greylevel as the primary key and a novel neighborhood distinction metric as the secondary key, and compared HE using proposed distinction metric and other HE methods such as global histogram equalization (GHE), HE using voting metric and HE using contrast difference metric. We found that our method can preserve advantages of other metrics, while reducing drawbacks of them and avoiding undesirable over-enhancement that can occur with local histogram equalization (LHE) and other methods.

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『의학통종(醫學統宗)』 「부지(不知)『역(易)』부족이언태의(不足以言太醫)」의 분석 (An Analysis of the Local Medical Examination Paper from the Ming Period on 'He who does not know Yi(易) cannot speak of medicine' in the Yixuetongzong(醫学統宗))

  • 조학준
    • 대한한의학원전학회지
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    • 제35권2호
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    • pp.51-76
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    • 2022
  • Objectives : To provide foundation for research on local medical examination of the Ming period, the contents on 'He who does not know Yi(易) cannot speak of medicine' in the Yixuetongzong(醫學統宗) written by He Jian was analyzed. Methods : Proofreading of the original texts, followed by interpretation of words and phrase and translation into Korean were done. The resulting contents were then analyzed from the perspective of the theory of Medical Yi(Yi-Yi). Results : In this medical exam paper for physicians, He answers himself on topics such as the Four Symbols[四象], Eight Symbols[八象], the Sixty-four hexagrams[Liushisigua], the combinations of the Organs and Bowels[Zangfu], Nine Orifices[Jiuqiao], and Five Body Parts[Wuti], the origin of the pulse, the reasoning behind calling the pulse 'the station for blood[xuezhifu]', what the 'Tianzhen Weihezhi Qi' stands for and the meaning of the Twelve Organs[shierguan]. He also supports the perspective of the 'Medicine and Yi having the same roots[Yi-yi tongyuan]', arguing that due to this, the body's physiology could be explained through the theories of Yi[易]. This shows that He understood the Yi-yi theory as a larger category. Conclusions :He's medical exam paper reflects his uniqueness in the field of the Yi-yi theory that precedes that of Zhao Xianke.

산간지역과 주거지에 입지하는 르 코르비지에 건축의 의도된 경관특징 연구 (A Study on Designed Landscape Characteristics of Le Corbuiser's Architecture in Mountain and Residential Area)

  • 정건채
    • 한국농촌건축학회논문집
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    • 제22권3호
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    • pp.25-32
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    • 2020
  • The purpose of this study is to understand what Le Corbuiser has intended on a panoramic landscape view through his modern architectural design. This paper is willing to improve that he considered both natural and local landscape scenery, when he designed architecture with drawing images. He designed various ways to see outside scenery and community culture through ribbon windows, piloti, architectural promenade, picture frame, and rooftop garden as the angle of view inside the building, 'designed landscape panorama' from his architecture. Therefore the contents of the study include the analysis of the local landscapes shown through his architecture by photograph, drawing of a real scenery, and his sketches with biology to find what he has intended. The following conclusions have three points. First, Le Corbuiser has a basic idea to bear a natural and local scenery from his architecture through five points of new architecture. Second, pilotis, ribbon windows, and roof garden with picture frame and architectural promenade are pathways of his architecture to see 'designed landscape panorama'. Third, it comes from his early architecture like Villa Savoye in 1920s to Couvent de Sainte Marie de la Tourette in 1950s, but Ronchamp church converts his idea on previous thoughts.

16세기 중반 지방 사족(士族)의 의료(醫療) 활동 - 경상북도 성주(星州)의 이문건(李文楗) 사례 (The Medical Activity by Local Gentleman(在地士族) in 16th Century)

  • 김성수
    • 한국한의학연구원논문집
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    • 제13권2호통권20호
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    • pp.15-25
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    • 2007
  • Neo-Confucianism(性理學) which provided an ideological base to found Chosun Dynasty which substituted for Koryu Dynasty, presented In-Cheong(仁政) as ideal statecraft. In-Cheong(仁政) is realizing spirit of In(仁) which means a forever creating power(生生之心), for that reason it was a natural result that the ruling class of Chosun Dynasty had interest in medical science. Therefore they remarked 'In-Cheong(仁政) has achieved' when medical books were published, also remarked Hwal-In-Seo(活人署) as an institute of realizing Wang-Cheong(王政) while Hwal-In-Seo(活人署) was placed in very low civil service grade, although the ruling class classified medical science as a Chap-Hak(雜學) which means not essential but necessary knowledge, and ranked it much lower than Confucianism. While had improved medical service system of Korea Dynasty, Chosun Dynasty had special interest in local medicine: expanding provincal medical centers, educating a medical student(醫生) in a medical school who was core human power in local medicine, etc. Nevertheless the local medicine was still depressed. The reasons are ; not providing enough medical center, not much fund to run each center and mobilizing a medical student(醫生) for miscellaneous labor. Depressed local medicine had changed when 士族 came to have an interest in medical science. 士族 had read a lots of medical books from the early Chosun Dynasty. 16th century they even wrote some books on medicine by themselves based on their experience as a provincial governor. On the other hand Yi-Mun-Geon(李文楗) who wrote Muk-Jae Diary belongs to the latter. He did not use the art of acupucture. He was a civil official in Seoul, so he could get a lots of books and enough medical stuffs. After a while. he was exiled in Seong-Ju(星州) and took part in local medicine there. The local medicine was depressed in Seong-Ju(星州) at that time. Yi-Mun-Geon(李文楗) was a kind of medical consultant as well as a local doctor. Such medical doings by Sa-Jok(士族) may be a moment that provide power to local Sa-Jok(士族). Sa-Jok(士族) themselves were enthusiastic in treating their sick slaves because the slaves were financial foundation of Sa-Jok(士族). After 17th century, however, the relative importance which Sa-Jok(士族) in the country had held in 16th century had decreased gradually while professional doctors bad increased.

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일기(日記)를 이용한 조선중기 양반관료의 여행 연구 (Research on an aristocratic officer's travels in the mid Chosun Korea by analysing Yu Hee-chun's diary)

  • 정치영
    • 역사민속학
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    • 제26호
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    • pp.71-106
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    • 2008
  • 이 연구는 유희춘(柳希春)이 쓴 생활일기인 "미암일기(眉巖日記)"를 자료로, 조선중기를 살았던 한 양반관료의 여행을 복원하는 것을 목적으로 하였다. 유희춘은 1567년 10월부터 1577년 5월까지 총 83개월 간 일기를 썼는데, 그 내용에서 추출한 26회의 여행기록을 분석대상으로 하였다. 연구의 주요한 결과를 살펴보면, 유희춘의 여행은 그 목적에 따라 공무여행과 사적인 여행으로 구분할 수 있다. 16회에 걸친 공무여행은 전라감사로서 군현의 순시, 예조참판으로서의 능의 관리와 참배, 산제(山祭)의 봉행 등을 목적으로 하였다. 유희춘은 줄곧 관직에 있었기 때문에 사적인 여행이 쉽지 않았다. 사적인 여행은 모두 10회였는데, 조상 묘소의 성묘와 정비, 자신과 부인의 신병치료, 새로운 집의 건축 등을 위해 이루어졌으며, 모두 장기간에 걸친 장거리 여행이었다. 유희춘이 여행한 경로를 살펴보면, 가장 많이 오간 서울-담양 간의 여정에 '해남로'를 이용한 것을 비롯하여, 주로 국가가 관리하는 주요 간선도로를 이용하였다. 그 이유는 간선도로가 대개 직선루트로 이루어져 가장 빠른 길이기도 했지만, 그 보다는 길가 곳곳에 역(驛) 원(院)등의 편의시설이 잘 갖추어져 있어 중간에 말을 갈아타고 숙식하는 데 가장 편리하였기 때문이었다. 한편 유희춘은 전라감사로 근무하는 동안 전라도의 군현들을 4회에 걸쳐 시찰하였는데, 그 여정은 전라도 전 지역을 샅샅이 도는 노선으로 짜여졌다. 현직관료였던 유희춘은 임금으로부터 여행 허가를 받는 것으로 여행 준비를 시작하였다. 이와 병행하여 여행에 필요한 물품들을 준비하였는데, 교통수단인 말을 준비하는 것이 가장 중요하였다. 모든 여행 준비가 끝나면, 임금에게 '숙배(肅拜)'라는 작별인사를 드리고, 평소 알고 지내던 친지들과 '전별(餞別)' 행사를 가지고 길을 나섰다. 유희춘이 이용한 주된 교통수단은 말이었고, 여기에는 역마(驛馬), 쇄마(刷馬)(지방관아의 관용 말), 그리고 개인소유의 말이 모두 동원되었다. 그 밖에 전라감사로서의 순시에는 가마가 주로 이용되었다. 현직 관료였던 유희춘은 여행을 하면서 대부분 지방관아의 객사(客舍)에서 숙박하였다. 여정에 따라 객사에서의 숙박이 여의치 않을 때에는 역(驛)이나 친지의 집을 이용하였으며, 드물게 사찰에서 숙박한 사례도 있었다. 여행 중의 식사는 대개 지방관아에서 제공받았다. 유희춘의 여행 중의 활동은 여행 목적에 따라 상당히 달랐다. 먼저 사적인 여행은 조상들의 묘소를 찾아 제사를 지내고 묘소를 정비하는 일이 가장 주요한 활동이었으며, 경로 상에 있는 친지를 방문하였다. 전라감사로서의 공무여행 중의 활동은 규칙성을 가지고 있었다. 그 주요 내용은 군현의 공무 처리, 향교(鄕校) 방문 등이었으며, 중간에 틈을 내어 친지를 방문하거나 명승지를 둘러보았다.

The Five Laws of Library Science from a Japanese Angle

  • Takeuchi, Satoru
    • 한국문헌정보학회지
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    • 제45권4호
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    • pp.287-295
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    • 2011
  • The Five Laws of Library Science was introduced into Japan in 1935. After World War II, it was widely disseminated among young librarians by the education for librarianship developed in the 1950's. Its concept, "Books for All," met a serious opposition from local authorities based on their long continued concept of "preservation." After they realized that people eagerly use local libraries, they interpreted that the duty of public library was "lending books." They introduced "Privatization" of libraries into quite a few local libraries in order to save money. For overcoming problems, it is important to disseminate the library concept among the public, the assembly members and government officials planning to change their attitude of disregarding libraries. As the fundamental library philosophy, the Five Laws of Library Science is important. In the commentary of the Five Laws written by the present writer, he included an illustration of triangle pyramid showing the structure of the Five Laws. He included here the spiral of study on the library and the library science, based on the Section 814 of the Five Laws. He welcomes discussions on his Japanese angle from different viewpoints in order to develop further understanding of the Five Laws.

ILM 시공시 발생할 수 있는 하중조합에 대한 강교량 주형의 국부좌굴 연구 (A Study of Local Buckling of Steel Bridge Girders subtended to Possible Load Conditions during Construction by Incremental Launching Method)

  • 염응준;강민철;황민오;강영종
    • 한국전산구조공학회:학술대회논문집
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    • 한국전산구조공학회 2004년도 가을 학술발표회 논문집
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    • pp.203-209
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    • 2004
  • Recently, various and new special methods of construction about steel bridges have been tried, and the study about local buckling under this methods have been performed too. But because of various cases, structural analysis is performed to check safety for each step of construction, and this is not efficient and economical method for time and manpower. So, for solution of this problems, general method about checking safety needs to he developed. In this study, local buckiling of web of girder due to various load cases under construction by ILM(Incremental Launching Method) will be studio considering various parameters such as forces, aspect ratio, boundary condition and so on. Also interaction curve will he plotted for each case.

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외상성 기관식도루 -수술체험 1례- (A Case Report of Traumatic Tracheoesophageal Fistula)

  • 최승호
    • Journal of Chest Surgery
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    • 제27권10호
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    • pp.888-892
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    • 1994
  • Acquired, traumatic tracheoesophageal fistula [TEF] is rare and difficult problem to manage. This 55 years old man met with a roller accident of a tractor. During accident, he received a penetrating injury on the left upper sternal border. At local clinic, he received closed thoracotomy drainage [CTD]for relief of pneumothorax[left]. Three days after CTD, he complained abdominal pain and hematemesis. The endoscopy revealed large ulcer at the stomach, so he received subtotal gastrectomy. On 10th day post subtotal gastrectomy, he developed aspiration and coughing from a TEF. The esophagogram showed large TEF at the mid-trachea level. So he transfered to our hospital for operation. This patient was operated on for late TEF three weeks after injury. We have used absorble 4-0 Vicryl sutures to repair trachea. We repair all esophageal injuries with two layers of nonabsorbable silk suture. Where suture line on the esophagus, the strap muscle was interposed for reinforcement. And for feeding, the feeding jejunostomy was performed. Postoperatively the osteomyelitis of the manubrium site was developed, so on the 30th postoperative day, an ostectomy of manubrium, both clavicle and fight 1st, 2nd ribs, and the pectoralis major musculo-cutaneous flap coverage were performed.

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하구순암의 구역 재발로 반대편 악하 공간에 발생한 연조직 전이 1예 (A Case of Soft Tissue Metastasis in Contralateral Submandibular Space by Regional Recurrence of Lower Lip Cancer)

  • 홍석정;임성환;김은주;김승우
    • Korean Journal of Otorhinolaryngology-Head and Neck Surgery
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    • 제61권12호
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    • pp.702-704
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    • 2018
  • The most common cause of treatment failure in oral cavity cancer is when it is found to have local recurrence, usually occurring in the ipsilateral cervical lymph node. On the contrary, it is extremely rare to find local recurrence in soft tissue metastasis (STM) in the contralateral neck. Furthermore, lung cancer and malignant lymphoma are most commonly confined to their primary sites. The poor general condition increases the likelihood of STM, which indicates bad prognosis. A 72-year-old man with a hard and fixed mass on the right submandibular space visited our clinic. He had received a wide excision with local flapreconstruction for squamous cell carcinoma in the left corner of lower lip 18 months ago. We performed the wide excision with bilateral selective neck dissection (I-III), and he was finally diagnosed as STM from contralateral lip cancer. We report this unique and rare disease entity with a literature review.