Efficient point cloud lossless data compression method based on an embedded Gray code structured light pattern sequence

2018 ◽  
Vol 57 (29) ◽  
pp. 8766 ◽  
Author(s):  
Hossein Rashidizad ◽  
MohmmadMorad Sheikhi ◽  
Gholamreza Akbarizadeh
2016 ◽  
Vol 78 (6-4) ◽  
Author(s):  
Muhamad Azlan Daud ◽  
Muhammad Rezal Kamel Ariffin ◽  
S. Kularajasingam ◽  
Che Haziqah Che Hussin ◽  
Nurliyana Juhan ◽  
...  

A new compression algorithm used to ensure a modified Baptista symmetric cryptosystem which is based on a chaotic dynamical system to be applicable is proposed. The Baptista symmetric cryptosystem able to produce various ciphers responding to the same message input. This modified Baptista type cryptosystem suffers from message expansion that goes against the conventional methodology of a symmetric cryptosystem. A new lossless data compression algorithm based on theideas from the Huffman coding for data transmission is proposed.This new compression mechanism does not face the problem of mapping elements from a domain which is much larger than its range.Our new algorithm circumvent this problem via a pre-defined codeword list.  The purposed algorithm has fast encoding and decoding mechanism and proven analytically to be a lossless data compression technique.


1997 ◽  
Vol 07 (03) ◽  
pp. 551-567 ◽  
Author(s):  
Michael F. Barnsley ◽  
Anca Deliu ◽  
Ruifeng Xie

It is shown that the invariant measure of a stationary nonatomic stochastic process yields an iterated function system with probabilities and an associated dynamical system that provide the basis for optimal lossless data compression algorithms. The theory is illustrated for the case of finite-order Markov processes: For a zero-order process, it produces the arithmetic compression method; while for higher order processes it yields dynamical systems, constructed from piecewise affine mappings from the interval [0, 1] into itself, that may be used to store information efficiently. The theory leads to a new geometrical approach to the development of compression algorithms.


2019 ◽  
Vol 66 (8) ◽  
pp. 2017-2021
Author(s):  
Zhongtao Shen ◽  
Shuwen Wang ◽  
Cheng Li ◽  
Changqing Feng ◽  
Shubin Liu

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