文章摘要
王琪,王天马.潜像信息嵌入率对光栅防伪效果的影响[J].包装工程,2016,37(1):147-153.
WANG Qi,WANG Tian-ma.Influence of Information Embedding Rate on Anti-counterfeit of Parallax Barrier[J].Packaging Engineering,2016,37(1):147-153.
潜像信息嵌入率对光栅防伪效果的影响
Influence of Information Embedding Rate on Anti-counterfeit of Parallax Barrier
投稿时间:2015-05-08  修订日期:2016-01-10
DOI:
中文关键词: 信息嵌入率  光栅防伪  数字加网  人眼视觉特性
英文关键词: information embedding rate  grating anti-counterfeiting  digital halftone  HVS
基金项目:
作者单位
王琪 南京林业大学南京 210037 
王天马 南京林业大学南京 210037 
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中文摘要:
      目的 建立信息嵌入率与视觉感知阈值的关系模型, 利用韦伯定律和图像显著性相关理论分析嵌入率对潜像隐蔽性和提取效果的影响。方法 在特征不同的宿主图像中, 以0.05为步长在(0, 0.50]区间内的信息嵌入率完成防伪标识的隐藏与光栅检测提取, 并用加权信噪比和彩色结构相似度评价隐蔽性、 用信息熵函数和区域对比度评价提取显著性。结果 潜像信息嵌入率与隐蔽性负相关, 与提取显著性正相关; 在潜像嵌入和光栅提取阶段, 纹理复杂的亮调图像其防伪隐蔽性和显著性都最佳,信息嵌入率取值范围为R′ ∈[0.18, 0.41], 验证了理论分析的正确性。结论 适用于大多数基于相位调制的光栅防伪技术。
英文摘要:
      The relationship model of information embedding rate and visual perception threshold was constructed in this paper, then the Weber′ s law and image saliency theory was applied to study the influence of the information embedding rate on imperceptibility and saliency of anti-counterfeit. Among various host images with different characteristics, the hiding and extraction of anti-counterfeit logo was implemented in range (0, 0.50] with step 0.05. The imperceptibility which resulted from the hiding process can be evaluated by WSNR and CISI indexes. The Ti and Fi indexes were applied to analyze the outcome of extraction process. The latent image information embedding rate was negatively related to the imperceptibility while positively related to the saliency. During the hiding and extraction process of latent image, the bright image with complex texture acted best on both imperceptibility and saliency. The information embedding rate ranged from 0.18 to 0.41, indicating that the theoretical analysis was correct. The embedding rate was applicable to most grating anti-counterfeiting technology based on phase modulation.
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