He is the author of more than 50 refereed papers in journals and conferences. He has 2 patents and has also contributed to OpenCV, the well-known open source computer vision library. He is the author of 3 books on OpenCV and OpenCV programming for mobile devices. Oscar has also served as visiting researcher at Carnegie Mellon University (USA), Imperial College London (UK) and Leica Biosystems (Ireland). He is a Senior Member of IEEE and is affiliated with the AAAI, IAPR and The Computer Vision Foundation. He serves as an Academic Editor of Journal PLoS ONE and Associate Editor of IEEE Consumer Electronics. Currently, he is the Coordinator of EU Horizon 2020 "Eyes of Things" project and partner in FP7 AIDPATH Marie Curie Action. He serves as a reviewer/expert for EU programs such as Eurostars.