Automatic aortic valve landmark localization in coronary CT angiography using colonial walk
Fig 5
A colonial walk from multiple random points.
The red dot is the target ground truth position. The orange dot refers to the first unknown point that misguides the walker. Initial point of the 1st walk is unknown to the regression tree. The 2nd walker converges and make dense step cloud around the target. The first misguider point of the N-th walk is not the initial point but a point through its way. The walker with the minimum walk variance is considered to be the best-guided walker.