6533b85efe1ef96bd12bfe80

RESEARCH PRODUCT

A new algorithm for bit rate allocation in JPEG2000 tile encoding

Edoardo ArdizzoneM. La CasciaF. Testa

subject

Settore ING-INF/05 - Sistemi Di Elaborazione Delle Informazioniimage coding JPEG2000business.industryComputer scienceComputationComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISIONProcess (computing)computer.file_formatImage (mathematics)Softwarevisual_artEncoding (memory)JPEG 2000visual_art.visual_art_mediumTilebusinesscomputerAlgorithmData compression

description

A new algorithm for allocating a given bit rate to different image tiles in the JPEG2000 encoding system is proposed. The algorithm outperforms other approaches commonly used in implementations. The new algorithm is suitable when information content is not equally distributed across the image. It is based on the computation of an index of the information content of each tile. To implement the proposed approach, we modified JasPer, a free software-based JPEG2000 coder implementation (Adams, M.D. and Kossentini, F., Proc. IEEE Int. Conf. on Image Process., vol.2, p.53-6, 2000). The experimentation was carried out on a subset of the JPEG2000 test images. Experimental results are reported, showing the PSNR of the decompressed images to be better than the one produced with the traditional approach, when the information content is not equally distributed across the image, and to be comparable to that of the traditional approach, when the information distribution is quite uniform.

yearjournalcountryeditionlanguage
2004-02-0312th International Conference on Image Analysis and Processing, 2003.Proceedings.
https://doi.org/10.1109/iciap.2003.1234125