축구 비디오 데이터내의 이동 객체의 궤적 추출 및 질의 처리를 위한 그래픽 사용자 인터페이스에 관한 연구

심춘보(Sim Chun Bo),신지현(Shin Ji Hyun) 한국디지털디자인학회 2007 디지털디자인학연구 Vol.7 No.3

이동 객체는 시간의 흐름에 따라 공간적인 위치 모양 크기등과 같은 다양한 속성들이 변화하며 이러한 이동 객체는 시간과 공간적인 특성을 모두 가지고 있는 비디오데이터의 중요한 특징정보 중에 하나이다. 본 연구에서는 멀티미디어 데이터 중에서도 특히 축구 비디오 데이터내의 이동 객체의 궤적 정보를 기반으로 보다 효율적인 비디오 데이터 자체의 내용을 기반으로 하는 검색할 수 있는 시스템을 설계 및 구현한다. 제안하는 시스템은 비디오 데이터내의 이동 객체의 궤적을 토대로 내용 기반 검색을 지원하기 위해 다음과 같은 기법을 포함한다. :(1) 이동 객체의 궤적 정보를 모델링하기 위한 데이터 모델링 기법; (2) 대용량 축구 비디오 데이터를 기반으로 보다 유사한 비디오 샷을 검색하기 위한 사용자 질의 타입 분석 및 처리 기법; (3) 그래픽 사용자 인터페이스를 이용한 편리한 이동 객체의 궤적 추출 및 질의 생성 및 검색 인터페이스 기법. A moving object has a various features that its spatial location shape and size are changed as time goes. In addition the moving object has both temporal feature and spatial feature. It is one of the highly interested feature information in video data. In this study we design and implement an content-based multimedia information retrieval system which enables user to efficiently retrieve video data by using a trajectory information of moving objects in soccer video data. The proposed system includes three novel techniques to achieve content-based retrieval using moving objects' trajectories:(1) Data modeling technique to represent the trajectory of a moving object; (2) Query analysis and processing technique to retrieve more similar video shots based on a large soccer video data; (3) convenient trajectory extraction query generation and retrieval interface based on graphic user interface(GUI)

실시간 3D 브라우징 시스템을 위한 램 디스크 기반의 다시점 영상 합성 기법의 설계 및 구현

심춘보(Chun-Bo Sim),임은천(Eun-Cheon Lim) 한국콘텐츠학회 2009 한국콘텐츠학회논문지 Vol.9 No.5

다시점 영상 처리 기술은 다시점 디스플레이 장치와 압축된 데이터 복원 장치를 통해 장치 사용자의 시각에 3차원의 입체 영상을 제공하는데 목적이 있다. 본 논문은 4시점의 병렬 카메라를 통해 실시간으로 입력되는 스테레오 이미지들에 대해서 효율적인 영상 합성을 통해 3차원 입체 영상을 브라우징할 수 있는 램 디스크 기반의 다시점 영상 합성 기법을 제안한다. 제안하는 기법은 입력 영상들을 이진화 영상으로 변환한 후, Sobel 및 Prewitt 에지 발견 알고리즘을 적용시키고 이를 토대로 4개 영상들의 시차를 구한다. 아울러 기존의 알고리즘에서 모호하게 언급되었던 동기화 문제를 해결하기 위해 하드웨어 트리거와 소프트웨어 트리거를 위한 시간 간격을 적용한다. 제안하는 기법을 분산 환경에서도 적용할 수 있도록 영상의 스냅샷에 대한 유일한 식별자를 이용한다. 성능 분석 결과, 전체 영상(왼쪽, 오른쪽) 및 시차정보를 모두 전송하여 고정밀의 3차원 입체 영상을 출력하는 데 소요되는 전체 시간은 각 이진 배열 당 약 0.67초로 실시간으로 적용하는 데 적합하다고 볼 수 있다. One of the main purpose of multiple-view image processing technology is support realistic 3D image to device user by using multiple viewpoint display devices and compressed data restoration devices. This paper proposes a multiple view image synthesis scheme based on RAM disk which makes possible to browse 3D images generated by applying effective composing method to real time input stereo images. The proposed scheme first converts input images to binary image. We applies edge detection algorithm such as Sobel algorithm and Prewiit algorithm to find edges used to evaluate disparities from images of 4 multi-cameras. In addition, we make use of time interval between hardware trigger and software trigger to solve the synchronization problem which has stated ambiguously in related studies. We use a unique identifier on each snapshot of images for distributed environment. With respect of performance results, the proposed scheme takes 0.67 sec in each binary array. to transfer entire images which contains left and right side with disparity information for high quality 3D image browsing. We conclude that the proposed scheme is suitable for real time 3D applications.

Performance Improvement of Evolution Strategies using Reinforcement Learning

Sim, Kwee-Bo,Chun, Ho-Byung Korean Institute of Intelligent Systems 2001 INTERNATIONAL JOURNAL of FUZZY LOGIC and INTELLIGE Vol.1 No.1

In this paper, we propose a new type of evolution strategies combined with reinforcement learning. We use the variances of fitness occurred by mutation to make the reinforcement signals which estimate and control the step length of mutation. With this proposed method, the convergence rate is improved. Also, we use cauchy distributed mutation to increase global convergence faculty. Cauchy distributed mutation is more likely to escape from a local minimum or move away from a plateau. After an outline of the history of evolution strategies, it is explained how evolution strategies can be combined with the reinforcement learning, named reinforcement evolution strategies. The performance of proposed method will be estimated by comparison with conventional evolution strategies on several test problems.

Gamma-Knife Radiosurgery of Cystic Brain Tumor : Is Microsurgery Indicated?

Sim, Jae Hong,Kim, Moo Seong,Sim, Hong Bo,Lee, Sun Il,Jung, Yong Tae,Kim, Soo Chun 인제대학교 2000 仁濟醫學 Vol.21 No.1

목적 : 낭종을 동반한 뇌종양은 흔히 볼수 있으며, 신경학적 장애를 동반하며, 뇌정위적 흡입술이 임상증상의 호전을 보이나, 낭종재발이 흔하여, 다발성 흡입술을 요한다. 방법 및 자료 : 본원에서는 낭종을 동반한 뇌종양 13례를 감마나이프 방사선 수술을 시행하고 정중 14개월(5-29개월) 주기적 관찰하였다. 종양의 진단은 두개인두종 3예, 뇌간성상세포종 2예, 소뇌성상세포종 2예, 소뇌 혈관모세포종 1예, 신경절교종 1예 뇌실종양 1예, 소뇌교각부 모양세포성상세포종 1예, 전이성 종양 1예, 교모세포종 1예 등이었다. 결과 : 감마나이프 시술시 주변부선량이 평균 15.5Gy(10-20.5Gy). 최대선량 32.3Gy(18-45Gy)가 조사되었고, 이중 11예에서는 종양의 고형성분이 감소함에도 불구하고 낭종이 재발하여 6예에서는 오미야저장소를 삽입하고, 2예에서는 뇌정위적 흡입술, 미세수술 요법이 2예에서 행해졌으며, 오미야저장소를 삽입하였던 환자중 2예에는 낭종이 커져 외래에서 주사기흡입을 여러번 시행하였다. 결론 : 낭종을 동반한 뇌종양의 감마나이프 시술시는 신중을 요하며, 신경학적 장애를 동반하였을 때는 수술적 요법을 요할 것으로 사료됩니다.

감마나이프 방사선수술 1124례의 경험 : 신경외과 영역에서의 수술적 이용가치 surgical available values in neurosurgical fields

심재홍,심홍보,김무성,정영균,이선일,정용태,김수천 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.2

Objectives: The Leksell gamma knife is one form of stereotactic radiosurgery. Stereotactic radiosurgery is really not surgery at all. The skull is never opened. Gamma knife is a way of treating brain disorders with a special form of radiation. The purpose of this study was to evaluate the surgical results in 1124 gamma knife cases operated in our institution from Oct. 1994 to Dec. 2001. Patients and Methods: The Leksell model G stereotactic head frame was affixed to the patients's head after local anesthesia on the scalp. Dose planning was performed initially on a Micro-VAX workstation(KULA) later on a Hewlett-Packard work-station using gamma-plan software, Radiosurgery was performed using the 201 source cobalt-60 Leksell Gamman Knife model B. Results: We treated 1124 patients with gamma knife radiosurgery from October 1994 to December 2001. Disease entities were vascular disorder 221cases(19.7%), benign neoplasm 549 cases(48.6%), primary malignant brain tumor 177cases(15.7%), metastatic tumor 90cases(8%), functional disorder 12cases(1%), others 75cases. Overall results of gamma knife were good outcome in 85~90%. Conclusion: The some benefits of gamma knife include; no risk of infection or reaction to anesthesia, short hospital stay within 2 or 3 days in most cases, virtually no pain, significantly reduced medical costs and an immediate return to normal activities. Gamma knife radiosurgery can enable to treat surgical inaccessible location, high risk location, old age, and other medical problem combined patient, etc. In the future gamma knife radiosurgery would be more widely applied to various neurosurgical fields.

스키마 공진화 알고리듬의 이론적인 해석

심귀보,전호병 중앙대학교 정보통신연구소 1999 정보통신연구소논문집 Vol.1 No.1

유전 알고리듬(Genetic Algorithms : GAs)은 최근 들어 최적화 문제를 해결하기 위한 방법으로 널리 쓰이고 있다. 그 이유는 재생, 교차, 돌연변이라는 도구를 이용하여 어려운 고차원의 문제들에서도 빠르게 최적해를 찾을 수 있기 때문이다. 그러나 GA 곤란한 문제라는, GA에서 최적해로 수렴하지 못하고 국소해에 머무르고 마는 경우가 있다. 이를 해결하기 위한 방법으로 본 연구자들은 스키마 공진화 알고리듬(Schema Co-Evolutionary Algorithm : SCEA)과, 그에 따른 확장 스키마 정리(extended schema theorem)를 제안하였다. 최적해의 해후보로 구성된 개체군과 스키마들의 집합으로 구성된 개체군 간의 공진화를 통하여 SCEA는 GA보다 빠른 수렴성을 가지며, 또한 GA 곤란한 문제에서도 최적해로 수렴한다. 본 논문에서는 기생(寄生) 프로세스(parasitizing process)를 통한 SCEA의 효율성과 장점을 보인다. Genetic algorithms(GAs) have been widely used as a method to solve optimization problems. This is because GAs have simple and elegant tools with reproduction, crossover, and mutation to rapidly discover good solutions for difficult high-dimensional problems. They, however, do not guarantee the convergence of global optima in GA-hard problems such as deceptive problems. Therefore we proposed a Schema Co-Evolutionary Algorithm(SCEA) and derived extended schema theorem from it. Using co-evolution between the first population made up of the candidates of solution and the second population consisting of a set of schemata, the SCEA works better and converges on global optima more rapidly than GAs. In this paper, we show advantages and efficiency of the SCEA by examining parasitizing process of it.

거대낭종을 동반한 두개강내 혈관외피세포증 : Case report

심홍보,이선일,최병욱,김수천,심재홍 대한신경외과학회 1995 Journal of Korean neurosurgical society Vol.24 No.12

Hemangiopericytomas is a rare malignent tumor of the central nervous system having an incidence of 1-3.8% of all primary intracranial meningeal tumors, and the occurrence of cystic hemangiopericytomas is even rarer. We report our recent experience of a case of cerebral Hemangiopericytoma associated with a large cyst in a 38 year-old man. The patient presented with 1-month history of headache. Computerized tomography(CT) and magnetic resonance image(MRI) showed a huge-sized, cystic tumor in the left frontal region. Histopathological report of the excised tumor confirmed cystic Hemangiopericytoma. Over the years, the issue of classifying Hemangiopericytoma as a form of meningioma has been controversial. Since Hemangiopericytoma differs from that of ordinary meningiomas because of its extremely malignant behavior and different histological and ultrastructural porperties, the author suggest that Hemangiopericytoma classified not with meningiomas. Regardless of classification, total surgical removal of this tumor is crucial due to its tendency for local recurrence despite aggressive resection.

뇌동맥류 수술 2,335례의 치험 : 2,335 Cases

심재홍,김수천,정용태,이선일,김무성,정영균,심홍보 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.1S

■ Objectives The principle role of treatment for ruptured aneurysm has been to obliterate the aneurysmal sac and secure the patient's life from the hazards of rebleeding and vasospasm. The present study was conducted to evaluate the overally surgical results in 2,335 patients with intracranial aneurysms operated in our institution from January 1980 to December 31th, 2001. ■ Patients and Methods Among these, 776 cases were anterior communicating artery aneurysms, 596 internal carotid artery aneurysms, 603 middle cerebral artery aneurysms, 63 anterior cerebral artery aneurysms and 80 cases of vertebro-basilar artery aneurysms, etc. The male to female ratio was 0.7 to 1. Surgical methods were 2,111 clippings, 182 coatings and wrappings, 23 aneurysmorraphy, 19 proximal ligations. ■ Results Incidence of the rebleeding was 5.6% of the early operation group. 17% of the late operation group. Incidence of the clinical vasospasm was 18.6% angiographic vasospasm was 26.2%. The percent of the multiple aneurysms was 9.3%, dissecting aneurysm ; 5 cases(0.2%), "De Novo" aneurysm ; 4 cases(0.17%), lobectomy cases ; 7 cases (0.3%), incidental aneurysms ; 117 cases(5.0%). Overall surgical result was favorable outcome in 86% and mortality in 7%. In early surgery group, favorable outcome was 88%, mortality was 6%. The calcium-channel blocker and "Triple-H" therapy does not improve the postoperative mortality but improve the post-operative morbidity significantly. In old age group, favorable outcome was 85.5% and 8.5% mortality rate, favorable outcome 69.8%, mortality 11.3% in late operation group. In old age group, early operation can reduce vasospasm, rebleeding, medical complications, etc. In complex artery aneurysm, the use of endovascular treatment is increasing. Intraoperative angiography reduced residual aneurysm or remained aneurysm in large, giant aneurysm, and complicated aneurysm, especially in A.com. a. aneurysm. ■ Conclusions In vascular surgery, it is important how we do it for the aneurysm from surgical treatment to postoperative management. The more aneurysm operations, the more difficult.

Enhancing the Biological Control of Rice Seedling Disease by Adding Specific Carbon Sources into the Bacillus cereus D324 Formulation in Water-Seeded Rice

Sim, Jung-Bo,Chung, Ill-Min,Ku, Han-Mo,Choi, Hyoi-Won,Lee, Jong-Moon,Chun, Se-Chul The Korean Society of Plant Pathology 2008 Plant Pathology Journal Vol.24 No.1

Utilization of carbon sources by Bacillus cereus D324, a biological control agent, and Pythium species, which causes rice seedling disease, was studied with the objective of increasing the efficacy of biological control by providing the biological control agent with specific beneficial carbon sources. D-galactose, D-sorbitol, and D-mannitol were poor carbon sources for Pythium spp. growth but were good for B. cereus D324 growth. Growth in a growth chamber of rice seeds coated with B. cereus D324 amended with specific carbon sources, such as D-galactose and D-sorbitol, showed significantly enhanced seedling emergence compared to seeds coated only with B. cereus D324. Field trials showed that both seedling emergence and yield increased, when the above specific carbon sources were added to B. cereus D324 in seed coating formulations. This result indicated that amending seed coating formulations with specific carbon sources could significantly increase seedling emergence and yield in the field.

외상성 내경동맥해면정맥동루의 임상적 분석

심홍보,최병욱,이선일,정용태,김수천,심재홍 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.4

We analyzed 20 cases of traumatic carotid cavernous fistula(CCf) during the recent 10 years. The results are summarized as follows : 1) In 18 cases(90%). the clinical symptoms & signs of CCF occurred within 2 months after trauma. 2) The sites of fistulae were common in horizontal segment(40%) and at the junction(30%) between horizontal segment and posterior ascending segment of cavernous portion of internal carotid artery 3) The main draining veins of CCF were the superior ophthalmic vein(90%) and the inferior petrosal sinus(70%) 4) The methods of treatment were occlusion of fistula with balloon(9 cases). occlusion of cavernous ICA with balloon(2 cases), ligation of cervical ICA with Poppen's clamp(4 cases) and trapping(2 cases). Two patients were not treated and another patient was healed spontaneously. 5) The frequency and severity of complication was significantly decreased in cases treated by detachable balloon occlusion than by direct cervical ICA ligation of trapping procedures. 6) The procedure using the self-sealed goldvalve balloon was simple. but had a risk of premature separation and premature deflation.