A moving target detection algorithm based on GMM and improved Otsu method

2014 ◽  
Author(s):  
Zhe Zhao ◽  
Yingqing Huang ◽  
Xiaoyu Jiang ◽  
Xingpeng Yan
2014 ◽  
Vol 667 ◽  
pp. 255-259
Author(s):  
Fei Tang ◽  
Jin Xiong Zhang ◽  
Te Cai ◽  
Sen Guo ◽  
Re Qiang

Based on the analysis of video images HSV differential and differential histogram chart and its pixel distribution histogram goals and shadow, this paper raises an Otsu method based on weighted shadow detection algorithm. The experiment shows this calculating method is featured by high detection precision, good effect, adaptability, easy realization of the project.


2012 ◽  
Vol 605-607 ◽  
pp. 2117-2120
Author(s):  
Min Huang ◽  
Yang Zhang ◽  
Gang Chen ◽  
Guo Feng Yang

In target detection, “hole” phenomenon is present in the detection result, and the shadow is difficult to remove. To solve these problems, we propose a target detection algorithm based on principle of connectivity and texture gradient. Firstly, we use the connectivity principle to find the largest target prospects connection area to get a complete target contour, secondly we use target texture gradient information to further remove the shadow of the target. At last, the experimental results show that the algorithm can obtain a clear target profile and improve the accuracy of the moving target segmentation.


2014 ◽  
Vol 67 ◽  
pp. 273-282 ◽  
Author(s):  
Zhengzhou Li ◽  
Zhen Dai ◽  
Hongxia Fu ◽  
Qian Hou ◽  
Zhen Wang ◽  
...  

2021 ◽  
Vol 38 (1) ◽  
pp. 215-220
Author(s):  
Bin Wu ◽  
Chunmei Wang ◽  
Wei Huang ◽  
Da Huang ◽  
Hang Peng

Classroom teaching, as the basic form of teaching, provides students with an important channel to acquire information and skills. The academic performance of students can be evaluated and predicted objectively based on the data on their classroom behaviors. Considering the complexity of classroom environment, this paper firstly envisages a moving target detection algorithm for student behavior recognition in class. Based on region of interest (ROI) and face tracking, the authors proposed two algorithms to recognize the standing behavior of students in class. Moreover, a recognition algorithm was developed for hand raising in class based on skin color detection. Through experiments, the proposed algorithms were proved as effective in recognition of student classroom behaviors.


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