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</div> <div class="bm_c xld"> <div class="attbox_right_ad"> </div> <div class="attbox_left"> <ul> <li>打开方式: Adobe Reader 9.0</li> <li>资料大小: 1.41 MB</li> <li>下载次数: 0</li> <li>上传会员: <a href="attachcenter-list.html?uid=162135" target="_blank" style="color:#FF9900">无盐</a></li> <li>上传时间: 2015-07-10</li> <li>本站网址: <a href="http://www.oecr.com/">www.oecr.com</a></li> <li><a href="http://bbs.oecr.com/thread-270648-1-1.html" target="_blank">查看资料所在的主题</a></li> <li><a href="http://bbs.oecr.com/forum.php?mod=attachment&aid=ODgwNTh8OTU1M2I4M2Z8MTc2NTkyMjAyNXwwfDA%3D" target="_blank" style="color:#FF9900">下载资料 </a></li> </ul> </div> <DIV style="CLEAR: both"></DIV> <b>欢迎下载本站资料，下载前请先登录您的社区账号。</b></div> </div> <DIV style="CLEAR: both"></DIV> <div class="bm cl" style="padding:5px;"> <p><button type="submit" class="pn vm" onclick="setCopy('http://www.oecr.com/plugin.php?id=attachcenter:page&aid=88058', '链接已经复制到剪贴板');" type="submit"> <em>复制链接推荐给好友</em></button> <input type="text" class="px vm" onclick="this.select();setCopy(this.value, '链接已经复制到剪贴板');" value="http://www.oecr.com/plugin.php?id=attachcenter:page&aid=88058" size="50" /></p> </div> <div class="bm"> <div class="bm_c xld"> <b>球面波照明下傅里叶变换全息多图像加密方法研究:</b><div class="postmsg">球面波照明下傅里叶变换全息多图像加密方法研究<br /> Multiple image encryption based on Fourier transform holography under spherical wave illumination<br /> 下载全文<br /> <br /> 作 者：沈学举 刘旭敏 许芹祖 林超<br /> SHEN Xueju, LIU Xumin, XU Qinzu, LIN Chao （Ordnance Engineering College, Shijiazhuang 050003, China）<br /> 机构地区：军械工程学院,石家庄050003<br /> 出 处：《激光技术》 CSCD 2014年第38卷第4期 488-493页,共6页<br /> Laser Technology<br /> 摘 要：为了减少加密系统所用模板数,简化隐藏图像对解密过程的影响,采用球面波照明研究了基于傅里叶变换全息的多图像加密隐藏方法,并进行了加密、加密图像隐藏和解密的理论分析和数值模拟,加密图像和原始图像间的相关系数趋于0,宿主图像和加密图像的叠加系数ρ〈0.3时,宿主图像和隐藏图像的相关系数趋于1,解密图像和原始图像间的相关系数趋于1。结果表明,该加密隐藏方法的加密、解密和隐藏效果良好。<br /> To reduce the number of binary random phase mask used in an image encryption system and simplify the effect of hidden encryption images on decryption process,an optical multiple-image encryption and hiding scheme was put forward based on Fourier transform holography under spherical wave illumination.Theoretical analysis and numerical simulation of image encryption and hiding encryption image and image decryption were made.The results show that correlation coefficient between encryption image and original image approaches 0,correlation coefficient between host image and hiding encryption image approaches 1 when superposition coefficient ρ between host image and hiding encryption image is less than 0.3,correlation coefficient between decryption image and original image approaches 1.The encryption method can obtain good encryption effect.<br /> 关键词：信息光学 光学图像加密 加密图像隐藏 二值随机相位模板 傅里叶变换全息 球面波照明<br /> information optics ;optical image encryption ;hiding encryption image ;binary random phase masks ;Fourier transform holography ;spherical wave illuminating ;</div> <div style="height200px;"></div> </div> </div> </div> </div></div> </div> <!--autocomment filter by 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