Javad Sadri

Work place: School of Computer Science, McGill University, 3630 University, Montreal, QC, Canada H3A 2B2



Research Interests: Computer Science & Information Technology, Computational Science and Engineering, Computational Engineering, Computer systems and computational processes


Javad Sadri, Dr.javad sadri is currently Associate Professor of Computer Engineering at Islamic Azad University, Ferdows branch, Iran.

Author Articles
A New Efficient Reordering Algorithm for Color Palette Image

By Somaye Akbari Moghadam Mahnaz Rajabzade Mohammad Sadeq Garshasbi Javad Sadri

DOI:, Pub. Date: 8 Nov. 2013

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.

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