Three quick approaches for contour following based on connected component labeling were proposed.
Algorithm for connected component labeling of binary image based on label transmitting
The concepts of connected unascertained subset, the connectedness of unascertained topological space and connected component are introduced and some related theorems obtained.
A configuration of electrically or electromagnetically connected components or devices.
After scanning the object image and labeling the connected component, the background and foreground noise could be removed easily by threshold value area expunction.