논문 해외 국제전문학술지(SCI급) Gradient-based camera exposure control for outdoor mobile platforms
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2019-06
- 저자명 최동걸,Shim I.,Oh T.-H.,Lee J.-Y.,Choi J.,Kweon I.S.
- 학술지명 IEEE Transactions on Circuits and Systems for Video Technology
- 발행처명 Institute of Electrical and Electronics Engineers Inc.
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 6
홈페이지논문 초록 (Abstract)
We introduce a novel method to automatically adjust camera exposure for image processing and computer vision applications on mobile robot platforms. Because most image processing algorithms rely heavily on low-level image features that are based mainly on local gradient information, we consider that gradient quantity can determine the proper exposure level, allowing a camera to capture the important image features in a manner robust to illumination conditions. We then extend this concept to a multi-camera system and present a new control algorithm to achieve both brightness consistency between adjacent cameras and a proper exposure level for each camera. We implement our prototype system with off-the-shelf machine-vision cameras and demonstrate the effectiveness of the proposed algorithms on practical applications, including pedestrian detection, visual odometry, surround-view imaging, panoramic imaging, and stereo matching.