Based on 3-ary Huffman coding algorithm, we propose a digital mapping method of protein sequence. Firstly, tree is defined by the frequency characteristic 20 amino acids in given sequences. The 0-2 codes constructed can convert long sequences into one-to-one According to and distribution information sequences, design 40-dimensional vectors characterize Next, proposed used perform three separate...

Background:
 This paper proposes a Hierarchical Video Compression Scheme (HVCS) method with three hierarchical layers of quality Recurrent Quality Enhancement (RQEN‎‎) network. Image compression techniques are used to compress frames in the first layer, where have highest quality. Using high-quality frame as reference, Bi-Directional Deep (BDC) network is proposed for second layer consider...

In this paper we investigate iterative source-channel decoding for robust JPEG coded images transmission over noisy channels. Huffman codes used as the variable-length coding scheme in JPEG coding can be represented by an irregular trellis structure proposed by Balakirsky (1997). State transition probabilities can be derived from the irregular trellis and can be used as a priori information to ...

This paper proposes a novel entropy encoding technique for lossless data compression. Representing a message string by its lexicographic index in the permutations of its symbols results in a compressed version matching Shannon entropy of the message. Commercial data compression standards make use of Huffman or arithmetic coding at some stage of the compression process. In the proposed method, l...