Somaye Akbari Moghadam; Mahnaz Rajabzade; Mohammad Sadeq Garshasbi; Javad Sadri

A New Efficient Reordering Algorithm for Color Palette Image

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Author(s)

Somaye Akbari Moghadam ^1,* Mahnaz Rajabzade ¹ Mohammad Sadeq Garshasbi ² Javad Sadri ³

1. Department of Computer Engineering, Ferdows branch, Islamic Azad University, Ferdows, Iran

2. Department of Computer Engineering, Germi branch, Islamic Azad University, Germi, Iran

3. School of Computer Science, McGill University, 3630 University, Montreal, QC, Canada H3A 2B2

* Corresponding author.

DOI: https://doi.org/10.5815/ijigsp.2014.01.08

Received: 19 Jul. 2013 / Revised: 23 Aug. 2013 / Accepted: 26 Sep. 2013 / Published: 8 Nov. 2013

Index Terms

Reindexing, NP-Complete, Lossless, Compression, Genetic Algorithms

Abstract

Palette re-ordering is a class of pre-processing methods aiming at finding a permutation of color palette such that the resulting image of indexes is more amenable for compression. The efficiency of lossless compression algorithms for fixed-palette images (indexed images) may change if a different indexing scheme is adopted. Obtaining an optimal re-indexing scheme is suspected to be a hard problem and only approximate solutions have been provided in literature. In this paper, we explore a heuristic method to improve the performances on compression ratio. The results indicate that the proposed approach is very effective, acceptable and proved.

Cite This Paper

Somaye Akbari Moghadam,Mahnaz Rajabzade,Mohammad Sadeq Garshasbi,Javad Sadri, "A New Efficient Reordering Algorithm for Color Palette Image", IJIGSP, vol.6, no.1, pp. 53-60, 2014. DOI: 10.5815/ijigsp.2014.01.08

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International Journal of Image, Graphics and Signal Processing (IJIGSP)