Table 4 Number of instruments in annotated frames. Most frames (>70% for all three procedures) contain one or two instruments.

From: Heidelberg colorectal data set for surgical data science in the sensor operating room

Surgery type

Number of frames with n instruments

n = 0

n = 1

n = 2

n = 3

n = 4

n = 5

n = 6

n = 7

Proctocolectomy

450 (12.9%)

1,697 (48.6%)

1,063 (30.4%)

227 (6.5%)

54 (1.5%)

2 (0.1%)

0 (0.0%)

0 (0.0%)

Rectal surgery

714 (19.5%)

1,850 (50.4%)

917 (25.0%)

158 (4.3%)

21 (0.6%)

7 (0.2%)

0 (0.0%)

0 (0.0%)

Sigmoid surgery

650 (22.6%)

1,198 (41.6%)

827 (28.7%)

178 (6.2%)

24 (0.8%)

2 (0.1%)

0 (0.0%)

1 (0.0%)