Now showing items 1-2 of 2

    • Frequency Content Oriented Modification of Quantization Matrix in DCT-Based Compression 

      Tarniceriu, Daniela; Munteanu, Valeriu; Beldianu, Florin ("Dunarea de Jos" University of Galati, 2006)
      In order to improve the compression rate for comparable values of error metrics, we propose a method to modify the standard quantization matrix used in JPEG, according to image frequency content. Unlike the method which ...
    • Optimal Coding for Qualitative Sources on Noiseless Channels 

      Munteanu, Valeriu; Tarniceriu, Daniela ("Dunarea de Jos" University of Galati, 2006)
      In this paper we perform the encoding for sources which are only qualitatively characterized, that is, each message the source delivers possesses a certain quality, expressed as cost, importance or utility. The proposed ...