Multiobjective Image Color Quantization Algorithm Based on Self-Adaptive Hybrid Differential Evolution

Pseudocode 1

The pseudocode of MoDE-CIQ.

Input color image ;

Set parameters , , , , , ;

Initialize two populations , ;

Initialize Pareto-optimal solutions set , and all individuals in POS are set to

be enough large initial values of MSE;

for to

for to

   Update the first population by SaDE-CIQ (the pseudo-code is shown in [15]) with

    as its objective;

     Update the second population by SaDE-CIQ with as its objective;

     Exchange the best solutions of the two populations;

  for to

   If is a non-dominated solution and its MSE value is less than POS,

     then POS;

     If is a non-dominated solution and its MSE value is less than POS[],

     then POS[];

Output all the nonzero individuals in Pareto-optimal solutions set POS, their values of MSE, the

quantized image with the smallest value of MSE.