Genetic algorithm with intelligent crossover for colour quantization

Shinn-Ying Ho*, K. Z. Lee

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Genetic algorithms (GAs) with crossover using heuristics can rapidly provide satisfying high-quality solutions to colour quantization problems that are known to be NP-complete. This paper proposes an intelligent genetic algorithm based colour quantization (IGACQ) algorithm. The crossover operation of the intelligent genetic algorithm (IGA) consists of economically identifying good individual genes from parents and intelligently combining these good genes to generate high-quality offspring. The merit of intelligent crossover without using heuristics is that the conventional random recombination and generate-and-test search for offspring are replaced with a divide-and-conquer strategy and a systematic reasoning recombination based on orthogonal experimental design. It is shown empirically that IGACQ performs better than existing GA-based and non-GA-based methods for colour quantization in terms of quantization quality.

Original languageEnglish
Pages (from-to)151-162
Number of pages12
JournalImaging Science Journal
Issue number3
StatePublished - 1 Jan 2003


  • Clustering
  • Colour quantization
  • Genetic algorithm
  • Intelligent crossover
  • Partitioning

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