scholarly journals Image compression and encryption scheme using fractal dictionary and Julia set

2015 ◽  
Vol 9 (3) ◽  
pp. 173-183 ◽  
Author(s):  
Yuanyuan Sun ◽  
Rudan Xu ◽  
Lina Chen ◽  
Xiaopeng Hu
Keyword(s):  
Image Compression ◽  
Julia Set ◽  
Encryption Scheme ◽  
Image Compression And Encryption

Range-gated laser image compression and encryption scheme based on bidirectional diffusion

2021 ◽  
Vol 17 (10) ◽  
pp. 630-635
Author(s):  
Jinqing Li ◽  
Yaohui Sheng ◽  
Xiaoqiang Di ◽  
Yining Mu
Keyword(s):  
Image Compression ◽  
Encryption Scheme ◽  
Image Compression And Encryption

Image compression and encryption scheme based on 2D compressive sensing and fractional Mellin transform

2015 ◽  
Vol 343 ◽  
pp. 10-21 ◽  
Author(s):  
Nanrun Zhou ◽  
Haolin Li ◽  
Di Wang ◽  
Shumin Pan ◽  
Zhihong Zhou
Keyword(s):  
Image Compression ◽  
Compressive Sensing ◽  
Mellin Transform ◽  
Encryption Scheme ◽  
Image Compression And Encryption

scholarly journals Joint Lossless Image Compression and Encryption Scheme Based on CALIC and Hyperchaotic System

Entropy ◽  
2021 ◽  
Vol 23 (8) ◽  
pp. 1096
Author(s):  
Miao Zhang ◽  
Xiaojun Tong ◽  
Zhu Wang ◽  
Penghui Chen
Keyword(s):  
Image Compression ◽  
Lossless Compression ◽  
Image Transmission ◽  
Single Step ◽  
Hyperchaotic System ◽  
Encryption Scheme ◽  
Lossless Image Compression ◽  
Compression Performance ◽  
Final Prediction Error ◽  
Image Compression And Encryption

For efficiency and security of image transmission and storage, the joint image compression and encryption method that performs compression and encryption in a single step is a promising solution due to better security. Moreover, on some important occasions, it is necessary to save images in high quality by lossless compression. Thus, a joint lossless image compression and encryption scheme based on a context-based adaptive lossless image codec (CALIC) and hyperchaotic system is proposed to achieve lossless image encryption and compression simultaneously. Making use of the characteristics of CALIC, four encryption locations are designed to realize joint image compression and encryption: encryption for the predicted values of pixels based on gradient-adjusted prediction (GAP), encryption for the final prediction error, encryption for two lines of pixel values needed by prediction mode and encryption for the entropy coding file. Moreover, a new four-dimensional hyperchaotic system and plaintext-related encryption based on table lookup are all used to enhance the security. The security tests show information entropy, correlation and key sensitivity of the proposed methods reach 7.997, 0.01 and 0.4998, respectively. This indicates that the proposed methods have good security. Meanwhile, compared to original CALIC without security, the proposed methods increase the security and reduce the compression ratio by only 6.3%. The test results indicate that the proposed methods have high security and good lossless compression performance.

scholarly journals AN APPROACH TO IMAGE COMPRESSION AND ENCRYPTION

2012 ◽  
pp. 146-149
Author(s):  
ABDUL RAZZAQUE ◽  
NILESHSINGH V. THAKUR
Keyword(s):  
Image Compression ◽  
Image Encryption ◽  
Encryption Scheme ◽  
Secret Key ◽  
Image Size ◽  
Compression Scheme ◽  
Unauthorized Access ◽  
Symmetric Key ◽  
Symmetric Key Cryptography ◽  
Image Compression And Encryption

Image compression scheme proposed by researchers have no consideration of security. Similarly image encryption scheme proposed by the authors have no consideration of image size. In this paper a simultaneous image compression and encryption scheme is discussed. The order of the two processes viz. compression and encryption is EC i.e. image encryption is performed first then the image compression is applied. For image encryption a symmetric key cryptography multiplicative cipher is used. Similarly for compression Discrete Cosine Transform is used. Image Compression is concerned with minimizing the number of bit required to represent an image. The compression can be lossless or lossy. Image Encryption is hiding image from unauthorized access with the help of secret key that key can be private or public.

Color image compression and encryption scheme based on compressive sensing and double random encryption strategy

2020 ◽  
Vol 176 ◽  
pp. 107684 ◽  
Author(s):  
Xiuli Chai ◽  
Jianqiang Bi ◽  
Zhihua Gan ◽  
Xianxing Liu ◽  
Yushu Zhang ◽  
...  
Keyword(s):  
Image Compression ◽  
Compressive Sensing ◽  
Color Image ◽  
Encryption Scheme ◽  
Image Compression And Encryption ◽  
Color Image Compression
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