Fig. 8From: HR-MPF: high-resolution representation network with multi-scale progressive fusion for pulmonary nodule segmentation and classificationSchematic diagram of the boundary extraction method. B(i, j) is the current pixel, and \(B(i, j +1)\), \(B(i, j -1)\), \(B(i +1, j)\), \(B(i -1, j)\) represent four adjacent pixelsBack to article page