• Journal of Yeungnam Medical Science
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• v.24 no.2
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• pp.315-321
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• 2007

Angiomatoid fibrous histiocytoma is a rare soft tissue tumor that generally affects children and young adults. We report a case of angiomatoid fibrous histiocytoma in an 11-year-old boy who complained of a back mass for 3 years. Surgical excision was performed. The excised specimen showed a $4.0{\times}3.6{\times}3.0cm$, well circumscribed, grayish white tumor, with multicystic changes. Histological examination showed proliferation of spindle or round shaped tumor cells. There was a dense fibrous pseudocapsule with prominent chronic inflammatory cell infiltrates.

• Journal of Yeungnam Medical Science
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• v.24 no.2
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• pp.311-314
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• 2007

The extraaxial presentation of a medulloblastoma is rare. This article describes the case of a 12-year-old boy who presented with severe headache, nausea, and vomiting. The tumor developed in the left tentorium; it was misdiagnosed as a meningioma based on the radiology examination. We review the literature and discuss the atypical presentation of medulloblastoma.

• Journal of Korea Multimedia Society
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• v.19 no.4
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• pp.706-716
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• 2016

Each year, significant amounts of Stereoscopic 3D(S3D) contents have been introduced. However, viewers who enjoy the contents readily experience a sense of fatigue on account of various factors. Consequently, many improvement studies have been conducted with the domain of disparity by, for example, simply controlling the disparity or optimizing the reaction speed of viewers' eyes to vergence. However, such studies are limited to the disparity domain and therefore are restricted to a limited number of applications. In this study, we attempted to transcend this limitation and analyzed how a reconstruction in color and brightness, as well as disparity and other important features, affects eyes in terms of vergence adaptation. As a result, we found that, the higher the color similarity is, the better it positively affects vergence adaptation during viewing. Based on this analysis, we propose in this paper a similar color extraction method between takes that are applicable to real-life situations. In an evaluation, the algorithm was applied to publicly available S3D contents and produced a converted color optimized image. The vergence adaptation time of this applied contents was significantly decreased. Also it was minimized through color reconstruction, thereby, being resulted in enhancing viewer concentration.

• Proceedings of the Korea Information Processing Society Conference
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• 2002.04a
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• pp.175-178
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• 2002

본 논문에서는 일반책에서의 정적 컨텐츠 요소와 오디오나 동영상 등의 멀티미디어 요소를 디지털 형태의 정보로 가공 및 저장하여 전자북을 편집할 수 있는 전자 출판 시스템을 설계한다. 기존의 전자북들은 멀티미디어 요소들을 보기 위한 별도의 전용 뷰어 설치가 요구되며, 서로 다른 포맷이나 다양한 프로그램들로 제작되어 문서의 통합 저장 및 관리가 어려운 실정이다. 본 논문에서 설계한 시스템은 별도의 전용 뷰어 대신 익스플로어와 같은 일반적인 뭔 브라우저를 이용하는 웹 뷰어를 지원하고, XML을 사용하여 보다 효율적으로 정보의 통합 관리 및 저장을 지원함으로써 다양한 컨텐츠 정보의 고수준의 재사용성을 제공한다. 또한, 웹상에서의 멀티미디어 요소들의 표현 시 요구되는 동기화 처리 기술을 위하여 SMIL을 이용함으로써 보다 다양한 멀티미디어 컨텐츠 및 멀티미디어 요소들의 시간적, 이벤트 발생적 동기화를 지원하여 정보 전달의 이해도를 놀일 수 있도록 한다. 설계 시스템은 웹 상에서 전자북을 보기위한 웹 뷰어, 전자북 출판 시 텍스트와 멀티미디어 요소를 표현하는 XML과 SMIL문서를 각각 자동적으로 생성하는 XMLnSMIL 에디터, 생성된 각 문서들을 데이터베이스에 저장하기 위한 XMLnSMIL2DB 저장기, 데이터베이스 내의 데이터들로 부터 XML과 SMIL문서를 자동으로 생성하는 DB2XMLnSMIL 생성기 등으로 구성된다.

• Journal of the Korea Computer Graphics Society
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• v.9 no.1
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• pp.3-9
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• 2003

표면 라이트 필드는 각 시점에서 관찰된 서로 다른 물체 표면의 색 정보를 메쉬에 저장함으로써 물체 표면을 시점 변화에 따라 사실적으로 렌더링할 수 있다. 본 논문에서는 표면 라이트 필드에 대한 영상 기반 편집 기술로서 몰핑 기법을 제시한다. 표면 라이트 필드를 몰핑하기 위해서는 중간 물체의 표면 라이트 필드를 위한 기하 정보와 라이트 필드를 생성해야 한다. 중간 물체의 기하 정보는 메쉬 몰핑을 통해 얻을 수 있다. 중간 물체의 라이트 필드는 두 입력 라이트 필드에서 필요한 정보를 얻어 시점과 기하 정보의 변화에 따라 변형한 후 이를 보간하여 주어진 시점에서의 라이트 필드를 동적으로 얻어낸다. 메쉬 몰핑을 통해 얻어진 중간 물체의 메쉬는 입력 물체에 비해 매우 복잡한 연결 구조를 가지므로 렌터링 속도를 향상시키기 위한 방법을 제시한다. 먼저 메쉬 몰핑 과정에서 메타 메쉬를 만들 때 가까이에 있는 정점들을 병합하여 보다 단순한 메타 메쉬를 생성하고 중간 물체를 렌더링하기 위해 메타 메쉬를 사용하지 않고 메타 메쉬를 근사하도록 두 입력 메쉬를 변형한 후 이를 렌더링에 사용한다.

• Journal of Yeungnam Medical Science
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• v.8 no.1
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• pp.220-230
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• 1991

Internuclear ophthalmoplegia is a conjugated gaze disorder characterized by impaired adduction on the side of a lesion involving the medial longitudinal fasciculus with dissociated nystagmus of the other abducting eye. Six patients with INO(who had clinical cerebrovascular diseases) underwent MR imaging and the results were as follows : 1. The MLF lesions were identified by MR imaging in 5 cases 2. The ratio of unilateral INO to bilateral INO was 5:1 3. The nature of lesions was infarction in 4 cases and hemorrhage in 1 case 4. The sites of MLF lesion were in the midbrain in 4 cases and in the pons in 1 case 5. All 5 cases of INO identified by MR imaging had other lesion sites in addition to MLF lesion.

• The Journal of the Korea institute of electronic communication sciences
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• v.8 no.9
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• pp.1421-1426
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• 2013

The purpose of this study is to develop the Clinical Kinesiology Class Contents(: CKCC) by utilizing movies and investigate the effects of its application to clinical kinesiology learning. The developed CKCC were applied to the clinical kinesiology classes for 47 second year student of physical therapy and occupational therapy in K college in G City. CKCC includ movie scenes that can demonstrate the action of muscles effectively, for better student understanding, as has already been shown widely. The interest and understanding of CKCC by the class was analysed. The results show that the developed CKCC is very effective implement for stimulating students' interest(p<0.05) and understanding(p<0.05) of clinical kinesiology classes.

• Journal of the Korean Institute of Intelligent Systems
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• v.18 no.4
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• pp.451-455
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• 2008

In this paper we embody a system that recognizes the printed alphabet of two font types (Batang, Dodum) inputted by a black-and-white CCD camera and converts it into an editable text form. The image of the inputted printed sentences is binarized, then the rows of each sentence are separated through the vertical projection using the Histogram method, and the height of the characters are normalized to 48 pixels. With the reverse application of the basic principle of the Nonogram puzzle to the individual normalized character, the character is covered with the pixel-based squares, representing the characteristics of the character as the numerical information of the Nonogram puzzle in order to recognize the character through the comparison with the standard pattern information. The test of 2609 characters of font type Batang and 1475 characters of font type Dodum yielded a 100% recognition rate.

• Journal of Navigation and Port Research
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• v.35 no.10
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• pp.793-798
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• 2011

ENCs are encoded using a numerical charts developed for publishing paper charts and serviced in forms of grid styles. For this reason, the density of ENCs' sounding information is not consistent and that requires improved methods. In this study, K-Means, ISODATA clustering algorithm as classification methods for satellite image was reviewed and adopted to this case study. The designed algorithm includes loading module for ENC data, improvement algorithm of sounding information, writing module of ENC data. According to the results of algorithm, we could confirm the improved result.

• Journal of Yeungnam Medical Science
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• v.26 no.1
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• pp.15-23
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• 2009

Constant technological developments in coronary artery disease have contributed to the assessment of both the presence of coronary stenosis and its hemodynamic consequences. Hence, noninvasive imaging helps guide therapeutic decisions by providing complementary information on coronary morphology and on myocardial perfusion and metabolism. This can he done using single photon emission computed tomography (SPECT) or positron emission tomography (PET) and multidetector CT (MDCT). Advances in image-processing software and the advent of SPECT/CT and PET/CT have paved the way for the combination of image datasets from different modalities, giving rise to hybrid imaging. Three dimensional cardiac hybrid imaging helped to confirm hemodynamic significance in many lesions, add new lesions such as left main coronay artery disease, exclude equivocal defects, correct the corresponding arteries to their allocated defects and identify culprit segment. Cardiac hybrid imaging avoids the mental integration of functional and morphologic images and facilitates a comprehensive interpretation of coronaty lesions and their pathophysiologic adequacy by three dimensional display of fused images, and allows the best evaluation of myocardial territories and the coronary-artery branches that serve each territory. This integration of functional and morphological information were feasible to intuitively convincing and might facilitate development of a comprehensive non-invasive assessment of coronary artery disease.