TY - CHAP U1 - Konferenzveröffentlichung A1 - Griesser, Dennis A1 - Dold, Daniel A1 - Umlauf, Georg A1 - Franz, Matthias O. T1 - CNN-Based Monocular 3D Ship Detection Using Inverse Perspective T2 - Global Oceans 2020, Oceans Conference and Exposition, October 5th - 30th 2020, virtual N2 - Three-dimensional ship localization with only one camera is a challenging task due to the loss of depth information caused by perspective projection. In this paper, we propose a method to measure distances based on the assumption that ships lie on a flat surface. This assumption allows to recover depth from a single image using the principle of inverse perspective. For the 3D ship detection task, we use a hybrid approach that combines image detection with a convolutional neural network, camera geometry and inverse perspective. Furthermore, a novel calculation of object height is introduced. Experiments show that the monocular distance computation works well in comparison to a Velodyne lidar. Due to its robustness, this could be an easy-to-use baseline method for detection tasks in navigation systems. KW - Inverse perspective KW - Mask R-CNN KW - 3D ship detection KW - Ship dataset Y1 - 2020 SN - 978-1-7281-8409-8 SB - 978-1-7281-8409-8 SN - 978-1-7281-5446-6 SB - 978-1-7281-5446-6 U6 - https://doi.org/10.1109/IEEECONF38699.2020.9389028 DO - https://doi.org/10.1109/IEEECONF38699.2020.9389028 SP - 8 S1 - 8 PB - IEEE ER -