The goal of this project is to detect colon polyps from CT images of the colon. We use curvature to detect polyps. Starting from the CT images, we create high resolution meshes representing the colon surface. We then compute curvature on the mesh in the form of a shape operator. Our initial curvature estimates are noisy due to discretization and noise. We therefore smooth the shape operators on the mesh to obtain stable curvatures that are then used to detect polyps. We experimented with unfolding the colon using physics-based methods, but found that they did not work that well for our data due to the colon surface being non-developable.