Two-dimensional compressed sensing-based compression and encryption method for two color images

• Main Authors: CHAI XIULI, LI ZHENG, ZHI XIANGCHENG, WANG JUN, GAN ZHIHUA, ZHANG MIAOHUI, WU HAIYANG, BI JIANQIANG
• Format: Patent
• Language: Chinese; English
• Published: 20.08.2019
• Subjects: CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS

The invention provides a two-dimensional compressed sensing-based compression and encryption method for two color images. The method comprises two stages: in the first stage, two-dimensional compressed sensing is utilized to perform compressed measurement on two color plaintext images, and then measured values are scrambled and quantized to obtain a compressed ciphertext image; in a second phase,firstly, a color carrier image is normalized, the ciphertext image is embedded into two of the three color components of the normalized color carrier image, the key parameters related to the plaintextare embedded into the other color component of the color carrier image, and the three color components of the color carrier image are recombined to finally obtain the visually safe ciphertext image.According to the invention, data security and appearance security of the two color images can be simultaneously realized. 本发明提供一种基于二维压缩感知的两幅彩色图像压缩加密方法。该方法包括两个阶段：在第一阶段，利用二维压缩感知对两幅彩色明文图像进行压缩测量，然后对测量值进行置乱、量化，得到压缩后的密文图像。在第二阶段，首先对彩色