유재천 교수

A miniaturized fluorescence detection system based on total internal reflection (TIR) configuration,which is applicable to detecting the presence of biological materials labeled with fluorescence dye in micro total analysis systems (μTAS), is proposed. In conventional fluorescence testing and analysis devices,interference between the excitation light beam and the emitted light from dyes is unavoidable. This paper presents a fluorescence detection system based on TIR configuration that allows the

A low density lipoprotein (LDL) cholesterol testing device, structured with serial reflected face-to-face mirror (SRM) allowing spectrophotometry measurements, is presented. The spectrophotometry has been employed to measure the amount of light that a sample absorbs, but it generally should have had path length longer than 10 mm to secure enough sensitivity. Such requirement of path length has often been problematic in implementing a thin type of lab on a disc (LOD). We developed the SRM system

In this paper, we proposed a laser-based non-contact temperature measuring method for high speed rotating polycarbonate (PC) disk using transparency change of thermocolor. The thermocolor has abilities to change color and transparency due to a change in temperature. The thermocolor is applied on one side of polyvinylidene fluoride (PVDF) membrane. The thermocolor applied membrane is attached to inside of reaction chamber in disk. An optical system consisted of a laser beam radiator and a laser p

본 논문은 차량에 의해 부분적으로 가려진 보행자를 대상으로, 차량 하부 틈새를 통해 관측되는 최소한의 하지 단서만으로 전신 자세와 실루엣을 복원하는 pose-guided reconstruction framework를 제안한다. 구현 및 평가된 파이프라인은 OLPD, FBPI, PGSR의 3단계로 구성되며, 가시적인 하지 keypoint를 검출한 뒤 전신 keypoint를 추론하고 최종적으로 silhouette probability mask를 생성한다. 또한 사전 정의된 복원 기준을 만족하는 데 필요한 최소 가시 비율을 정량화하기 위해 MRV를 도입한다. 통제된 synthetic paired dataset 실험에서, 채택한 IoU ≥ 0.80 및 Dice/F1 ≥ 0.90 기준하에 성공한 테스트 샘플들 중 가장 낮은 가시 비율은 12.87%였으며, OpenPose BODY 25 추론, vehicle-mask prediction, keypoint filtering, HSV를 제외한 측정