CAJ | 학술논문

针对当前彩色图像加密算法都是对 RGB 分量中所有像素加密，无法避免对次要像素的加密，使其加密效率较低，且加密后仍为彩色密文，增大了传输负载等不足。对此，本文提出了锯齿空间填充曲线耦合压缩感知的单通道彩图 RGB 分量灰度化实时同步加密算法。设计锯齿空间填充曲线，提高图像像素置乱率；嵌入压缩感知，对彩图 RGB 三分量进行同步压缩，得到三个测量矩阵，并构造灰度化函数，将图像演变为灰度图像；基于感兴趣区域原理，设计感兴趣像素提取方案，获取灰度图像的感兴趣像素矩阵，使其只扩散感兴趣像素，大幅度降低了像素扩散数量；设计加密函数，扩散感兴趣像素矩阵，再将加密像素映射到置乱图像相应位置，获取灰度密文。仿真结果显示：本文算法高度安全，能够得到灰度密文；与其他彩色加密算法相比，该算法具有更高的加密效率，可满足实时加密要求。
침대당전채색도상가밀산법도시대 RGB 분량중소유상소가밀，무법피면대차요상소적가밀，사기가밀효솔교저，차가밀후잉위채색밀문，증대료전수부재등불족。대차，본문제출료거치공간전충곡선우합압축감지적단통도채도 RGB 분량회도화실시동보가밀산법。설계거치공간전충곡선，제고도상상소치란솔；감입압축감지，대채도 RGB 삼분량진행동보압축，득도삼개측량구진，병구조회도화함수，장도상연변위회도도상；기우감흥취구역원리，설계감흥취상소제취방안，획취회도도상적감흥취상소구진，사기지확산감흥취상소，대폭도강저료상소확산수량；설계가밀함수，확산감흥취상소구진，재장가밀상소영사도치란도상상응위치，획취회도밀문。방진결과현시：본문산법고도안전，능구득도회도밀문；여기타채색가밀산법상비，해산법구유경고적가밀효솔，가만족실시가밀요구。
the low encryption effective which can not meet the requirement of real time was induced by encryption all the pixels of image and the cipher was still color which increasing the transmission loads after encryption in current algorithms ,. So the color image real-time encryption algorithm based on pixel of interest coupled compressive sensing was proposed. The pixel of interest chooses mechanism was designed by principle areas of interest to avoid encrypting image non-significant pixels; Embedding the compressive sensing, the permutation pixels were synchronous compres﹣sion. Finally, the encryption function was designed to diffusion the permutation pixels to obtain the gray cipher. The simulation results showed that this algorithm highly security, and the encryption efficiency of this algorithm was higher which can meet the requirement of real time comparison with other color image encryption algorithms.