초박형 라이트필드 카메라 시스템은이미지 센서 위에 렌즈 어레이를 부착하는 방식으로 만들어진다. 이러한 라이트 필드 카메라는 하나의이미지 센서를 여러 개의 sub-aperture가 나눠쓰는 되어있어 개별 이미지의 분해능이 낮으며, sub-aperture 이미지들을 융합해 추가적인 분해능 향상이 수행되어야 한다. 본 연구에서는 시스 템을 개발했으며, 개발된 시스템을위한 실시간 향상 알고리즘을 개발, 실험을 통해 검증했다. 두께 2mm, 24개(6 × 4)의 551 해상도의 sub-aperture로 구성되어 있으며, 임베디드 컴퓨팅 보드를 사용해 휴대가가능하도록 제작되었다. 알고리즘은임베디드 보드의 GPU에서 병렬처리를 라플라시안 피라미드 기반의이미지 융합 수행한다. 검증한 결과로, 개발 시스템은 MTF50...

With the development of intelligent surveillance systems, the need for accurate detection of pedestrians by cameras has increased. However, most of the previous studies use a single camera system, either a visible light or thermal camera, and their performances are affected by various factors such as shadow, illumination change, occlusion, and higher background temperatures. To overcome these p...

a r t i c l e i n f o This paper investigates image processing and pattern recognition techniques to estimate atmospheric visibility based on the visual content of images from off-the-shelf cameras. We propose a prediction model that first relates image contrast measured through standard image processing techniques to atmospheric transmission. This is then related to the most common measure of ...

The ability of EfficientDet, a framework developed in 2019 for object detection, to automatically detect smoke plumes at distance several kilometers is demonstrated. Recent articles have raised concerns about the effectiveness EfficientDet fire detection applications, with over 40% false positives reported. proposed model achieved true rate 80.4% and false-positive 1.13% on testing set. data se...

Background and Aim: Vascular imaging during surgical procedures is very important and has many applications.  There are several methods for intraoperative vascular assessment such as intraoperative angiography, Doppler, and fluorescence-based techniques. The latter group and specially the Indocyanine Green (ICG) Video Angiography (VA) is commonly used for vascular surgery and sentinel node...