Region Growing Segmentation | 555Tools — Online Tools for FPGA & Algorithm Engineers

Image AlgorithmsTool Introduction

Region growing starts from seed points and expands via 4-connected BFS, absorbing neighbors whose gray-level difference from the seed is within tolerance. Unlike threshold methods (global per-pixel decision) or clustering (global feature assignment), region growing is seed-driven and spatially constrained — same gray level but disconnected regions get different labels.

Key Formula / Principle

seed → BFS queue
while queue not empty:
  px = dequeue()
  for each 4-neighbor n of px:
    if |gray(n) − gray(seed)| ≤ tol AND not labeled:
      label(n) = region_id, enqueue(n)

Data Processed Locally|All computations run in your browser. Images, formulas, state machine definitions, and any other input data are never sent to any server.

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