Research Article

Ant Colony Optimization Approaches to Clustering of Lung Nodules from CT Images

Algorithm 5

Refined ant colony optimization algorithm.
Input: Lung CT image.
Output: Edge detected image using refined ACO algorithm.
begin
 Initialize threshold for performance
 do
  apply Ant Colony Optimization algorithm (given in Algorithm 4)
  get the output of previous iteration as the input to the next iteration
  compare two subsequent outputs
  while (threshold is not equal to difference value)
   output of last iteration is the output of refined Ant Colony Optimization algorithm
end