Dense and Sparse Optic Flows Aggregation for Accurate Motion Segmentation in Monocular Video Sequences

Author(s):  
Mihai Fǎgǎdar-Cosma ◽  
Vladimir-Ioan Creţu ◽  
Mihai Victor Micea



2015 ◽  
Vol 2015 ◽  
pp. 1-14 ◽  
Author(s):  
Fuyuan Xu ◽  
Guohua Gu ◽  
Kan Ren ◽  
Weixian Qian

We propose a new method for the motion segmentation using a moving camera. The proposed method classifies each image pixel in the image sequence as the background or the motion regions by applying a novel three-view constraint called the “parallax-based multiplanar constraint.” This new three-view constraint, being the main contribution of this paper, is derived from the relative projective structure of two points in three different views and implemented within the “Plane + Parallax” framework. The parallax-based multiplanar constraint overcomes the problem of the previous geometry constraint and does not require the reference plane to be constant across multiple views. Unlike the epipolar constraint, the parallax-based multiplanar constraint modifies the surface degradation to the line degradation to detect the motion objects followed by a moving camera in the same direction. We evaluate the proposed method with several video sequences to demonstrate the effectiveness and robustness of the parallax-based multiplanar constraint.



2013 ◽  
Vol 373-375 ◽  
pp. 598-602 ◽  
Author(s):  
Ming Jie Zhang ◽  
Bao Sheng Kang

In a monocular video scene, in order to improve the efficiency of object tracking and counting under occlusion conditions. The article presents a scheme to automatically track and count people in a surveillance system. First, a modified Gaussian mixture model was employed to determine pedestrian objects from a static scene. To identify foreground objects by positions and sizes of foreground regions which were obtained. Moreover, the performance to track objects was improved by using the modified overlap tracker, the modified overlap tracker was used to analyze the centroid distance between neighboring objects and help object tracking and people counting in occlusion states of merging and splitting. On the experiments of tracking and counting people in three video sequences, the results show that the proposed method can improve the averaged detection ratio about 10% as compared to the conventional work.





2002 ◽  
Vol 23 (14) ◽  
pp. 1761-1769 ◽  
Author(s):  
J.A Rodrı́guez ◽  
C Urdiales ◽  
A Bandera ◽  
F Sandoval




Sign in / Sign up

Export Citation Format

Share Document