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Table 3 Usage frequency of keywords

From: Intelligent video surveillance: a review through deep learning techniques for crowd analysis

Frequency

Keywords

41

Deep learning

11

Video surveillance

10

Convolutional neural network

9

Action recognition

7

Computer vision

7

Person re-identification

6

Convolutional neural networks

5

CNN

4

Activity recognition

4

Faster R-CNN

4

Machine learning

4

Surveillance

4

Video