Research on Recognition Method of Test Answer Sheet Based on Machine Vision

Author(s):  
Ping Cui ◽  
Dan Li ◽  
Kailiang Zhang ◽  
Likai Wang ◽  
Weiwei Liu
2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Liu Yan ◽  
Sun Xin

In view of the intelligent demand of tennis line examination, this paper performs a systematic analysis on the intelligent recognition of tennis line examination. Then, a tennis line recognition method based on machine vision is proposed. In this paper, the color region of the image recognition region is divided based on the region growth, and the rough estimation of the court boundary is realized. In order to achieve the effect of camera calibration, a fast camera calibration method which can be used for a variety of court types is proposed. On the basis of camera calibration, a tennis line examination and segmentation system based on machine vision analysis is constructed, and the experimental results are verified by design experiments. The results show that the machine vision analysis-based intelligent segmentation system of tennis line examination has high recognition accuracy and can meet the actual needs of tennis line examination.


2021 ◽  
Author(s):  
Zhe Xu ◽  
Xiaoge Liu ◽  
Jian Tang ◽  
Pengsheng Li ◽  
Ziying Zhang

2021 ◽  
Author(s):  
Zimei Zhang ◽  
Zhian Zheng ◽  
Lei Gao ◽  
Rongyan Wang

2020 ◽  
Vol 57 (16) ◽  
pp. 161017
Author(s):  
章振原 Zhang Zhenyuan ◽  
秦训鹏 Qin Xunpeng ◽  
李轶峰 Li Yifeng

2015 ◽  
Vol 9 (4) ◽  
pp. 895-902 ◽  
Author(s):  
Dongming Li ◽  
Li Zhang ◽  
Yongfu Liu

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