Bleeding Detection Algorithm for Capsule Endoscopy

Automatic detection of bleeding is of practical importance since capsule endoscopy produces an extremely large number of images. Algorithm development of bleeding detection in the digestive tract is difficult due to different contrasts among the images, food dregs, secretion and others. In this study, were assigned weighting factors derived from the independent features of the contrast and brightness between bleeding and normality. Spectral analysis based on weighting factors was fast and accurate. Results were a sensitivity of 87% and a specificity of 90% when the accuracy was determined for each pixel out of 42 endoscope images.

Authors:

• Yong-Gyu Lee
• Gilwon Yoon

Keywords:

• bleeding
• capsule endoscopy
• image analysis
• weighted spectrum

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