Table 1 Distribution of target sizes in the VisDrone2019 dataset.

From: A multi-scale small object detection algorithm SMA-YOLO for UAV remote sensing images

Category

Small

Medium

Large

Number

Proportion (%)

Number

Proportion (%)

Number

Proportion (%)

Pedestrian

65227

82.22

13804

17.40

306

0.39

People

23497

86.84

3463

12.80

99

0.37

Bicycle

7111

67.85

3244

30.95

125

1.19

Car

69862

48.22

63079

43.54

11926

8.23

Van

10751

43.08

11517

46.15

2688

10.77

Truck

3982

30.93

6725

52.23

2168

16.84

Tricycle

2176

45.22

2425

50.39

211

4.38

Awning Tricycle

1360

41.90

1699

52.34

187

5.76

Bus

1661

28.03

3265

55.10

1000

16.87

Motor

21986

74.16

7395

25.00

266

0.90

Total

207613

60.49

116616

33.98

18976

5.53