CAJ | 학술논문

压缩感知是信号处理领域的新兴理论，首先阐述压缩感知的基本原则和理论框架，然后对基于正交小波变换下压缩感知的图像重构的效果进行比较分析。实验表明，压缩感知可以很好地运用于图像重构。将压缩感知理论与数字水印技术相结合提出一种基于压缩感知理论的RGB空间彩色图像水印算法。该算法充分利用压缩感知的稀疏性及压缩比的可调节性，控制水印信息的嵌入容量的同时很好地提高了水印嵌入的安全性。实验表明，对于一些常见的攻击，该算法具备很好的鲁棒性。
압축감지시신호처리영역적신흥이론，수선천술압축감지적기본원칙화이론광가，연후대기우정교소파변환하압축감지적도상중구적효과진행비교분석。실험표명，압축감지가이흔호지운용우도상중구。장압축감지이론여수자수인기술상결합제출일충기우압축감지이론적RGB공간채색도상수인산법。해산법충분이용압축감지적희소성급압축비적가조절성，공제수인신식적감입용량적동시흔호지제고료수인감입적안전성。실험표명，대우일사상견적공격，해산법구비흔호적로봉성。
Compressive sensing is a new theory in the field of signal processing. the basic principles and theoretical frame?work of compressive sensing are briefly expounded in this paper. The results of the image reconstruction of compressed sensing based on the orthogonal wavelet transform are compared and analyzed. Experiment results show that the compressive sensing can be well applied to image reconstruction. A watermark algorithm for RGB space color images based on compressive sensing theory is proposed in combination with the compressive sensing theory and digital watermark technology. The algorithm makes full use of the sparsity of the compressive sensing and regularity of compression ratio to control the watermark information embedding ca?pacity and improve the security of watermark embedding. The experiment results show that the algorithm has good robustness for some common attacks.