no code implementations • 23 Mar 2023 • Yuta Yoshitake, Mai Nishimura, Shohei Nobuhara, Ko Nishino
We propose a novel method for joint estimation of shape and pose of rigid objects from their sequentially observed RGB-D images.
no code implementations • 16 Mar 2023 • Mai Nishimura, Shohei Nobuhara, Ko Nishino
We introduce an on-ground Pedestrian World Model, a computational model that can predict how pedestrians move around an observer in the crowd on the ground plane, but from just the egocentric-views of the observer.
no code implementations • 12 Oct 2022 • Mai Nishimura, Shohei Nobuhara, Ko Nishino
We introduce a novel learning-based method for view birdification, the task of recovering ground-plane trajectories of pedestrians of a crowd and their observer in the same crowd just from the observed ego-centric video.
1 code implementation • 24 Jan 2022 • Keisuke Okumura, Ryo Yonetani, Mai Nishimura, Asako Kanezaki
Multi-agent path planning (MAPP) in continuous spaces is a challenging problem with significant practical importance.
no code implementations • 9 Nov 2021 • Mai Nishimura, Shohei Nobuhara, Ko Nishino
We introduce view birdification, the problem of recovering ground-plane movements of people in a crowd from an ego-centric video captured from an observer (e. g., a person or a vehicle) also moving in the crowd.
4 code implementations • 16 Sep 2020 • Ryo Yonetani, Tatsunori Taniai, Mohammadamin Barekatain, Mai Nishimura, Asako Kanezaki
We present Neural A*, a novel data-driven search method for path planning problems.
1 code implementation • 20 Mar 2020 • Mai Nishimura, Ryo Yonetani
This work presents a deep reinforcement learning framework for interactive navigation in a crowded place.
no code implementations • 22 Nov 2019 • Hiroaki Minoura, Ryo Yonetani, Mai Nishimura, Yoshitaka Ushiku
To address this task, we have developed the patch-based density forecasting network (PDFN), which enables forecasting over a sequence of crowd density maps describing how crowded each location is in each video frame.
no code implementations • ICCV 2015 • Mai Nishimura, Shohei Nobuhara, Takashi Matsuyama, Shinya Shimizu, Kensaku Fujii
This paper presents a new generalized (or ray-pixel, raxel) camera calibration algorithm for camera systems involving distortions by unknown refraction and reflection processes.