Block Truncation Coding Using a Set of Predefined Bit Planes

2007 ◽  
Author(s):  
T.M. Amarunnishad ◽  
V.K. Govindan ◽  
Abraham T. Mathew
Keyword(s):  
Block Truncation Coding ◽  
Bit Planes

Erratum: Interpolative three-level block truncation coding algorithm

1993 ◽  
Vol 29 (17) ◽  
pp. 1591 ◽  
Author(s):  
E. Oshri ◽  
N. Shelly ◽  
H.B. Mitchell
Keyword(s):  
Block Truncation Coding

scholarly journals Security Analysis and Improvement of an Image Encryption Cryptosystem Based on Bit Plane Extraction and Multi Chaos

Entropy ◽  
2021 ◽  
Vol 23 (5) ◽  
pp. 505
Author(s):  
Shuqin Zhu ◽  
Congxu Zhu
Keyword(s):  
Image Encryption ◽  
Random Sequence ◽  
Security Analysis ◽  
Encryption Algorithm ◽  
Original Algorithm ◽  
Plane Extraction ◽  
Bit Plane ◽  
Bit Planes ◽  
And Diffusion ◽  
Improved Algorithm

This paper analyzes the security of image encryption systems based on bit plane extraction and multi chaos. It includes a bit-level permutation for high, 4-bit planes and bit-wise XOR diffusion, and finds that the key streams in the permutation and diffusion phases are independent of the plaintext image. Therefore, the equivalent diffusion key and the equivalent permutation key can be recovered by the chosen-plaintext attack method, in which only two special plaintext images and their corresponding cipher images are used. The effectiveness and feasibility of the proposed attack algorithm is verified by a MATLAB 2015b simulation. In the experiment, all the key streams in the original algorithm are cracked through two special plaintext images and their corresponding ciphertext images. In addition, an improved algorithm is proposed. In the improved algorithm, the generation of a random sequence is related to ciphertext, which makes the encryption algorithm have the encryption effect of a “one time pad”. The encryption effect of the improved algorithm is better than that of the original encryption algorithm in the aspects of information entropy, ciphertext correlation analysis and ciphertext sensitivity analysis.

Cross-point regions on multiple bit planes for lossless images compression

2011 ◽  
Vol 5 (5) ◽  
pp. 466 ◽  
Author(s):  
T.T. Dang ◽  
S.K. Nguyen ◽  
T.D. Vu ◽  
S. Higuchi
Keyword(s):  
Cross Point ◽  
Bit Planes
Sign in / Sign up

Export Citation Format

Share Document