scholarly journals Competitive Collaboration: Joint Unsupervised Learning of Depth, Camera Motion, Optical Flow and Motion Segmentation

2019 ◽  
Author(s):  
Anurag Ranjan ◽  
Varun Jampani ◽  
Lukas Balles ◽  
Kihwan Kim ◽  
Deqing Sun ◽  
...  
Keyword(s):  
Optical Flow ◽  
Unsupervised Learning ◽  
Motion Segmentation ◽  
Depth Camera ◽  
Camera Motion

scholarly journals Unsupervised Learning of Scene Flow Estimation Fusing with Local Rigidity

2019 ◽  
Author(s):  
Liang Liu ◽  
Guangyao Zhai ◽  
Wenlong Ye ◽  
Yong Liu
Keyword(s):  
Optical Flow ◽  
Unsupervised Learning ◽  
Optical Networks ◽  
Object Motion ◽  
Camera Motion ◽  
Outlier Rejection ◽  
Unified Framework ◽  
Flow Estimation ◽  
Local Rigidity ◽  
Scene Flow

Scene flow estimation in the dynamic scene remains a challenging task. Computing scene flow by a combination of 2D optical flow and depth has shown to be considerably faster with acceptable performance. In this work, we present a unified framework for joint unsupervised learning of stereo depth and optical flow with explicit local rigidity to estimate scene flow. We estimate camera motion directly by a Perspective-n-Point method from the optical flow and depth predictions, with RANSAC outlier rejection scheme. In order to disambiguate the object motion and the camera motion in the scene, we distinguish the rigid region by the re-project error and the photometric similarity. By joint learning with the local rigidity, both depth and optical networks can be refined. This framework boosts all four tasks: depth, optical flow, camera motion estimation, and object motion segmentation. Through the evaluation on the KITTI benchmark, we show that the proposed framework achieves state-of-the-art results amongst unsupervised methods. Our models and code are available at https://github.com/lliuz/unrigidflow.

Biomechanics Analysis of Sepak Takraw Tekong Serves via Depth Camera Motion Capture System

2018 ◽  
pp. 119-128
Author(s):  
Muhammad Zulhilmi Kaharuddin ◽  
Siti Badriah Khairu Razak ◽  
Mohamed Shawal Abd Rahman ◽  
Wee Chang An ◽  
Muhammad Ikram Kushairi ◽  
...  
Keyword(s):  
Motion Capture ◽  
Depth Camera ◽  
Camera Motion ◽  
Motion Capture System

OIFlow: Occlusion-Inpainting Optical Flow Estimation by Unsupervised Learning

2021 ◽  
pp. 1-1
Author(s):  
Shuaicheng Liu ◽  
Kunming Luo ◽  
Nianjin Ye ◽  
Chuan Wang ◽  
Jue Wanga ◽  
...  
Keyword(s):  
Optical Flow ◽  
Unsupervised Learning ◽  
Flow Estimation ◽  
Optical Flow Estimation
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