【摘要】：提出了一種基于三維物體的多重菲涅耳計(jì)算全息水印方法.將水印信號作為虛擬三維物體的層面,首先結(jié)合分區(qū)復(fù)用層析法和菲涅耳雙隨機(jī)相位編碼方法產(chǎn)生復(fù)噪聲形式的水印信號;然后對水印信號的頻譜作共軛對稱處理實(shí)現(xiàn)實(shí)值編碼;為減小對宿主全息圖數(shù)字重建的影響,將水印信號的頻譜設(shè)置于對宿主數(shù)字重建影響小的頻譜非感興趣區(qū)域;編碼后的信號以一定強(qiáng)度疊加于宿主全息圖,水印信號恢復(fù)無需原始宿主全息圖信息,可實(shí)現(xiàn)盲提取,對宿主全息圖重建像面的二維碼可掃描識別.仿真測試結(jié)果表明,所提出的方法具有較好的透明性和穩(wěn)健性,在宿主全息圖遭受濾波、JPEG(聯(lián)合圖像專家小組)壓縮、高斯噪聲、剪切、旋轉(zhuǎn)等各種攻擊的情況下,不論對宿主還是水印信號仍具有良好的數(shù)字重建質(zhì)量,對重建像面的二維碼仍可掃描識別;而重建像面水印信號的無干擾可控重建后處理操作解決了不同層面水印信號之間的衍射干擾問題,提高了水印信號的重建質(zhì)量.虛擬光學(xué)手段的應(yīng)用豐富了水印信號設(shè)計(jì)方法并提升了算法的安全性.
[Abstract]:A multi-fold Fresnel holographic watermarking method based on three-dimensional objects is proposed. The watermark signal is regarded as the level of the virtual 3D object. Firstly, the watermark signal in the form of complex noise is generated by combining the partition multiplexing chromatography method and the Fresnel double random phase coding method. In order to reduce the influence on the digital reconstruction of the host hologram, the spectrum of the watermark signal is set to the region not interested in the frequency spectrum which has little effect on the host digital reconstruction. The encoded signal is superimposed on the host hologram with a certain intensity, and the watermark signal can be recovered without the original host hologram information, so blind extraction can be realized, and the two-dimensional code of the reconstructed image surface of the host hologram can be scanned and recognized. The simulation results show that the proposed method has good transparency and robustness. When the host hologram is subjected to various attacks, such as filtering JPEGs, Gao Si noise, shearing, rotation and so on, Both the host and the watermark still have good digital reconstruction quality, and the two-dimensional code of the reconstructed image surface can still be scanned and identified. The reconstruction of image surface watermark signal can solve the problem of diffractive interference between different levels of watermark signal and improve the quality of watermark signal reconstruction. The application of virtual optics enriches the design method of watermark signal and improves the security of the algorithm.
【作者單位】： 福建師范大學(xué)數(shù)學(xué)與信息學(xué)院;
【基金】：福建省自然科學(xué)基金(批準(zhǔn)號:2017J01739) 福建師范大學(xué)基金(批準(zhǔn)號:I201601004,I201602015)資助的課題~~
【分類號】：TP309.7;TP391.41

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 胡玉平,郭廣軍;混沌數(shù)字水印信號研究[J];湖南人文科技學(xué)院學(xué)報(bào);2005年05期

2 胡延軍,馬小平,陳穎,高莉;公鑰魯棒性水印方案中水印信號的研究[J];中山大學(xué)學(xué)報(bào)(自然科學(xué)版);2004年S2期

3 紀(jì)震,李慧慧,肖薇薇,張基宏;基于混沌序列的數(shù)字水印信號研究[J];電子學(xué)報(bào);2004年07期

4 崔曉楠;;可觸摸虛擬三維物體的系統(tǒng)設(shè)備[J];今日電子;2008年10期

5 曾接賢,魯宇明,黎明,儲(chǔ)s，

本文編號：2157815