• Fisheries and Aquatic Sciences
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• 제9권2호
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• pp.70-74
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• 2006

DNA sequence-based typing is considered a robust tool for the discrimination of dinoflagellate species because of the availability of extensive rDNA sequences. Here, we present a rapid, cost-effective DNA-sequencing technique for various PCR products. This sequencing strategy relies on 'nested' or 'tailed' primer labeled with near-infrared dye, and uses a minimal volume of unpurified PCR product (ca. $5{\mu}L$) as the DNA template for sequencing reactions. Reliable and accurate base identification was obtained for several hundred PCR fragments of rRNA genes. This quick, inexpensive technique is widely applicable to sequence-based typing in clinical applications, as well as to large-scale DNA sequencing of the same genomic regions from related species for studies of molecular evolution.

• 한국인터넷방송통신학회논문지
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• 제9권5호
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• pp.175-181
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• 2009

본 논문에서는 Scale-space filtering 방법을 사용하여 홍채인식을 이용한 보안시스템을 구현 하였다. 적외선 카메라를 이용하여 영상을 획득하고 Scale-space filtering과 영상의 Concavity를 이용하여 2차원 코드를 추출하여 서버에 저장된 코드와 비교하여 신분을 인식하는 방법을 사용하였다. 보안 시스템을 구현한 후 실제 홍채영상을 이용하여 실험한 후 FAR과 FRR을 측정하여 시스템의 성능을 입증하였다. 실험결과는 제안한 방법이 매우 적합하다는 것을 보여준다.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2002년도 Proceedings of International Symposium on Remote Sensing
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• pp.664-669
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• 2002

Intertidal zone (tidal flat) is a place which is sometimes dry and sometimes wet depending on the tidal rhythm. Direct measurement of topography in the intertidal zone is very difficult to be achieved. The interface between wet and dry parts in the tidal flat, which can be identified from near infrared band of satellite image, is a 'depth contour' which corresponds to the sea level at the time of satellite pass. Aquisition of topography data in tidal flat is possible by combining various techniques such as (1) identification of the interface between wet and dry parts, (2) GCP correction of satellite image, and (3) realtime prediction of sea level elevation at the time of satellite pass. The algorithm was successfully applied in obtaining topography (bathymetry) data in the intertidal zone of Asan Bay in the west coast of Korea from 26 satellite images. The method is expected to be very efficient in making bathymetry data base in the western and southern parts of Korea where tidal flats are well developed in wide regions.

• 천문학회보
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• 제35권2호
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• pp.80.2-80.2
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• 2010

We have made an improved catalog of O-rich AGB stars in our Galaxy from the sources listed in the Infrared Astronomical Satellite (IRAS) point source catalog (PSC). We compile the lists of previous works with various verifying processes. We have removed 115 stars from the previous catalog of Suh & Kwon (2009) and added 958 more stars. The improved catalog contains 3036 O-rich AGB stars. The content of the revised catalog can be divided into 3 groups based on the verifying processes: OH/IR stars, SiO maser stars, and other detecting methods. We compare the new catalog with the previous catalog on the infrared two-color diagrams for the large sample of O-rich AGB stars. And we discuss differences among the 3 groups of the improved catalog and identification processes of some stars in exceptive cases.

• 천문학회보
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• 제43권1호
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• pp.59.2-59.2
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• 2018

Recent studies of galaxy clusters have shown that the galaxy clusters in dense environment tend to have lower star formation rate in local universe with z < 1. However, this correlation is not significant in galaxy clusters with z > 1. The study of galaxy clusters around z=1 can yield insight into cosmological galaxy evolution. Nevertheless, the identification of galaxy clusters beyond the scope of immediate local universe requires wide field data in optical and near-infrared bands. By incorporating data from Canada-France-Hawaii Telescope Legacy Survey(CFHTLS) and Infrared Medium-Deep Survey(IMS), the photometric redshifts of galaxies in CFHTLS W2 field were calculated. Using spatial distribution and photometric redshifts, the galaxies in the field were divided into redshift bins. The image of each redshift bin was analyzed by measuring the number density within proper distance of 1Mpc. By comparing high density regions in consecutive redshift bins, we identified the cluster candidates and mapped the large-scale structure within the CFHTLS W2 field.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2003년도 봄 학술발표회 논문집
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• pp.169-174
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• 2003

The purpose of this study is examine into the application of infrared thermography for voids detect in reinforced concrete structures. In this study, the experiments were carried out for analyze the effect of void size, cover, measurement time and distance on test piece which has artificial voids. Results of this study are as follows. Noiseless and high resolution thermography was acquired 11:00 - 14:00 and the thermography which taken 16:00 was not suitable for void detection. The difference of temperature between voids and solid to identification the existence of voids by eye is $0.3^{\circ}C$.

• 천문학회보
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• 제36권1호
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• pp.69.2-69.2
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• 2011

We present medium resolution spectra in the near-infrared (IR) band 1.4-1.8 microns at a resolving power of R = 5000-10000 of template stars in G, K, and M types with luminosity classes of III observed by the echelle spectrometer, IRCS, at the SUBARU 8.2 m telescope. Identification of lines in the template star spectra has been completed base on the reference of Arcturus spectrum. We measured equivalent width (EW) of the lines, and analyze the trends of EW through the stellar spectral types.

• 한국산학기술학회논문지
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• 제5권5호
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• pp.395-402
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• 2004

보석용 다이아몬드의 기술발전에 따라 고온고압법으로 만들어진 합성다이아몬드 인지, 또는 고온고압법(high temperature high pressure:HTHP)으로 향상처리된 천연다이아몬드 인지의 여부를 처리하지 않은 천연다이아몬드와 비교하여 명확히 확인할 필요가 있다. 본 연구에서는 합성다이아몬드를 진동시편자력계를 이용하여 강자성 특성을 보이는 경우 합성다이아몬드로 감별하는데 성공하였다. 또한 HTHP 향상처리 된 TypeIa, TypeIIa 다이아몬드를 FTIR(Fourier Transform Infrared) 분광기를 이용하여 HTHP 처리 공정 전후의 스펙트럼 분석으로 감별할 수 있음을 확인하였다.

• Journal of Chest Surgery
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• 제52권4호
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• pp.205-220
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• 2019

Near-infrared (NIR) fluorescence imaging provides a safe and cost-efficient method for immediate data acquisition and visualization of tissues, with technical advantages including minimal autofluorescence, reduced photon absorption, and low scattering in tissue. In this review, we introduce recent advances in NIR fluorescence imaging systems for thoracic surgery that improve the identification of vital tissues and facilitate the resection of tumorous tissues. When coupled with appropriate NIR fluorophores, NIR fluorescence imaging may transform current intraoperative thoracic surgery methods by enhancing the precision of surgical procedures and augmenting postoperative outcomes through improvements in diagnostic accuracy and reductions in the remission rate.

• 정보처리학회논문지:소프트웨어 및 데이터공학
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• 제10권3호
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• pp.99-108
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• 2021

차량 내부에는 조명 변화, 부분적인 가림 및 운전자의 상태 변화와 같은 제한되지 않은 조건들이 존재한다. 본 논문에서는 비 제약적인 차량 환경에서의 운전자 얼굴 인증 시스템을 제안한다. 제안한 방법은 차량 내부 및 외부의 조명 변화에 따라 발생하는 얼굴 이미지의 변화를 최소화하기 위해서 근적외선(NIR) 카메라를 사용한다. 특히 정면에서의 강한 빛에 노출된 얼굴 이미지를 처리하기 위해서, 학습 이미지의 평균과 분산을 사용하여 정상적인 얼굴 이미지로부터 빛에 과다하게 노출된 이미지로 변환하여 사용한다. 따라서 정상적인 조명에서의 얼굴 분류기와 강한 정면광에서의 얼굴 분류기를 각각 동시에 만들어진다. 제안하는 얼굴 분류기는 얼굴 랜드마크를 추출하고 각 랜드마크의 신뢰도 점수를 합산하여 얼굴을 최종적으로 식별한다. 특히 각 랜드마크를 인식하여 부분적인 얼굴 가림에 강하기 때문에 안경이나 선글라스를 착용하는 상황에서도 높은 성능 향상이 가능하다. 즉 가려지지 않은 남은 랜드마크의 점수를 사용하여 운전자를 인식할 수 있다. 또한 등록 운전자와 미등록 운전자 간의 관계를 고려한 새로운 인식 거부 방법과 새로운 평가 방법을 논문에서 제안한다. 자체 취득한 데이터 셋, 공인된 PolyU 및 ORL 데이터 셋으로 실험한 결과 제안한 방법이 효과적임을 확인할 수 있었다.