Sumários
Image Analysis and Processing: Segmentation (cont.)
10 maio 2019, 13:00 • Pedro Pina
The overssegmentation problem in the watershed transform. Selection and imposition of minima as relevant markers or seeds. Other segmentation methods: snakes and level sets.
Image Analysis and Processing: Segmentation
6 maio 2019, 11:30 • Pedro Pina
Third mini test (15 min.) in the beginning of the class. Topic: Mathematical morphology.
Introduction to image segmentation: overview and definitions. Thresholding: manual and automatic (Otsu method). Split and merge. Region growing. The watershed transform: definitions and algorithms.
Mathematical Morphology
3 maio 2019, 14:00 • Pedro Pina
Continuation of the problem of the previous lesson.
Image Analysis and Processing: Mathematical Morphology (conclusion)
3 maio 2019, 13:00 • Pedro Pina
Numeric Mathematical Morphology. Notion of the Umbra of a function. Main numeric operations: erosion and dilation, opening and closing. Morphological gradient and top-hat transform (peaks and valleys). Grey-level morphological filtering. Geodesic dilation and erosion; reconstruction (direct and dual). Thinning and thickening, skeletons and exoskeletons for grey level images.
Image Analysis and Processing: Mathematical Morphology (cont.)
29 abril 2019, 11:30 • Pedro Pina
Geodesic transforms. Geodesic erosion and dilation. Reconstruction. Neighbourhood Transforms. Hit-or-Miss Transforms. Thinning and thickening. Skeletons and homotopic skeletons. Exoskeletons. SKIZ-Skeleton by Influence Zones. Relevant points of skeletons. Convex hull and pseudo-convex hull.