Fig. 9From: Vessel segmentation for X-ray coronary angiography using ensemble methods with deep learning and filter-based featuresExamples of dilation (left) and erosion (right) on a grayscale image using a \(5\times 5\) flat SE [92, 93]. The top and bottom parts illustrate the position and results of the structuring element window when applied on specific pixels of the original imagesBack to article page