文章基本信息

标题：A partial image encryption scheme based on DWT and texture segmentation
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作者：Zainab Noori Ghanim ; Suha Abdul Raheem Khoja
期刊名称：Cogent Engineering
电子版ISSN：2331-1916
出版年度：2022
卷号：9
期号：1
页码：1-16
DOI：10.1080/23311916.2022.2026555
语种：English
出版社：Taylor and Francis Ltd
摘要：nowadays, image encryption is an interesting research area due to the rapid growth of communication technologies and the increasing demands for safeguarding the privacy of the transmitted images as unencrypted images are vulnerable to interception. Partial encryption is used to overcome the challenge of encryption the large size of digital images, due to the large computational overhead and long processing time needed. In this research, one level Discrete Wavelet Transform is applied to a colored image to divide the image to four sub-bands; then a texture segmentation using a Gabor filter and K-means clustering is applied to lowest frequency band. To achieve that, the texture segmentation is used as a new method for scrambling the image based on the features of another image. Finally, the scrambled segments of the image are encrypted using interchanged AES and RC4 Algorithms. Each one of the image pixels is then XORed using one of the two algorithms and the key of the other algorithm. The proposed work is evaluated using several security and performance analysis tests. The results show that the proposed work is resistant agents many kinds of attack and promising in real-time image transmission and encryption.
关键词：discrete wavelet transform ;Gabor filter ;k-means clustering ;AES ;RC4