激光技术
激光技術
격광기술
Laser Technology
2015年
6期
806-810
,共5页
徐光宪%徐山强%郭晓娟%华一阳
徐光憲%徐山彊%郭曉娟%華一暘
서광헌%서산강%곽효연%화일양
图像处理%图像压缩加密%离散余弦变换%脱氧核糖核酸加法运算%Chen混沌系统
圖像處理%圖像壓縮加密%離散餘絃變換%脫氧覈糖覈痠加法運算%Chen混沌繫統
도상처리%도상압축가밀%리산여현변환%탈양핵당핵산가법운산%Chen혼돈계통
image processing%image compression encryption%discrete cosine transform%deoxyribonucleic acid addition operation%Chen chaotic system
为了解决图像加密后数据量大、传输速率慢的问题，采用了离散余弦变换（ DCT）与脱氧核糖核酸（ DNA）运算相结合的图像压缩加密方法。首先采用DCT对原始图像进行压缩；再进行DNA编码；最后根据DNA运算的思想，通过Chen混沌系统对原始图像执行DNA加法运算，成功得到了加密图像。结果表明，该算法不仅有效地提高图像传输速度、减少存储空间，同时加密效果好、安全性高。
為瞭解決圖像加密後數據量大、傳輸速率慢的問題，採用瞭離散餘絃變換（ DCT）與脫氧覈糖覈痠（ DNA）運算相結閤的圖像壓縮加密方法。首先採用DCT對原始圖像進行壓縮；再進行DNA編碼；最後根據DNA運算的思想，通過Chen混沌繫統對原始圖像執行DNA加法運算，成功得到瞭加密圖像。結果錶明，該算法不僅有效地提高圖像傳輸速度、減少存儲空間，同時加密效果好、安全性高。
위료해결도상가밀후수거량대、전수속솔만적문제，채용료리산여현변환（ DCT）여탈양핵당핵산（ DNA）운산상결합적도상압축가밀방법。수선채용DCT대원시도상진행압축；재진행DNA편마；최후근거DNA운산적사상，통과Chen혼돈계통대원시도상집행DNA가법운산，성공득도료가밀도상。결과표명，해산법불부유효지제고도상전수속도、감소존저공간，동시가밀효과호、안전성고。
In order to solve the problems of huge amount of data and slow transmission speed after image encryption , a new image compression encryption algorithm combined discrete cosine transform ( DCT) with deoxyribonucleic acid ( DNA) operation was presented .At first, the original image was compressed by means of DCT and encoded according to DNA sequence .Finally, based on DNA operation , DNA addition operation was implemented to the original image by Chen chaotic system and an encrypted image was obtained .Simulation results show that the algorithm not only improves the speed of image transmission and reduces the storage space , but also has good encryption effect and high security .
