Connected Component Labeling for 8-Connected Images

Resource Overview

Connected component labeling for 8-connected images assigns unique labels to each connected region, with processed images obtaining sequential labels following a left-to-right, top-to-bottom scanning order.

Detailed Documentation

In image processing, 8-connected component labeling is used to assign unique identifiers to each connected region. This technique enables processed images to obtain sequential labels through raster scanning (left-to-right, top-to-bottom), facilitating subsequent processing and analysis. The algorithm typically employs two-pass methods using union-find data structures or single-pass approaches with equivalence resolution. Key implementation steps include neighborhood checking using 8-directional kernels, label propagation, and equivalence table management. This technology finds applications in various domains including digital image processing and computer vision, making it essential knowledge for researchers and practitioners working with image analysis techniques.