Figure4
From: A deep learning-based system for accurate detection of anatomical landmarks in colon environment
![A deep learning-based system for accurate detection of anatomical landmarks in colon environment](https://image.oaes.cc/e8b7e19e-a226-4e73-b2fb-b52cd6a7d476/ir4010-4.jpg)
Figure 4. (A) Normal frames in colonoscopy video; (B) The edge features of normal frames extracted by Canny edge detector; (C) Interference frames in colonoscopy video; (D) The edge features of interference frames extracted by Canny edge detector.