Journal of Jilin University(Engineering and Technology Edition) ›› 2021, Vol. 51 ›› Issue (6): 2154-2163.doi: 10.13229/j.cnki.jdxbgxb20200671

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Real⁃time camera planning for dynamic multiple targets considering cinematographic visual properties

Jun-cong LIN(),Jun LEI,Meng CHEN,Shi-hui GUO(),Xing GAO,Ming-hong LIAO   

  1. School of Informatics，Xiamen University，Xiamen 361005，China
  • Received:2020-09-03 Online:2021-11-01 Published:2021-11-15
  • Contact: Shi-hui GUO E-mail:jclin@xmu.edu.cn;guoshihui@xmu.edu.cn

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Abstract:

As the existing camera planning schemes are unable to deal with multiple targets and achieve real-time effect, in this paper, focusing on automatically optimizing the camera visual effect, a real-time camera planning algorithm is proposed for dynamic multiple targets. The method first adopts the toric camera space among the multiple targets, then takes the visual properties of the targets as the input of the non-linear optimization function. With the model predictive control, we can optimize the targets visual effect in real time. By analyzing the operation time, efficiency and performance of the experiments, it is verified that this method can effectively optimize the visual effect of the targets in the scene and it promotes the research of the multi-target camera planning algorithm.

Key words: computer application, camera planning, toric camera space for multiple targets, visual properties, non-linear optimization

CLC Number: 

  • TP391

Fig.1

Pipeline of camera planning system"

Fig.2

Chart of camera space"

Fig.3

Camera projection on screen"

Fig.4

Targets occlusion"

Fig.5

Camera and targets path"

Fig.6

Computation curves of non-linear optimization algorithm"

Fig.7

Test of different visual properties"

Table 1

Comparison of camera space generatednumber and precomputation timebetween different methods"

目标数量方法生成相机空间数预计算时间/ms
1文献［5，14］11
本文11
2文献［5，14］13
本文13
3文献［5，14］311
本文13
7文献［5，14］2116
本文14
12文献［5，14］6625
本文15

Fig.8

System experiments results"

Table 2

FPS range of different experiments"

实验编号FPS最小值/帧FPS最大值/帧
一36.042.9
二37.241.3
三38.540.1
四42.446.8
五46.650.2
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