.png){kind=icon}
返回
Towards a tone mapping-robust watermarking algorithm for high dynamic range image based on spatial activity
.png){kind=icon}
PRE
AI
DOI：10.1016/j.image.2018.04.005.png)
.png){kind=icon}
.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
High dynamic range (HDR) imaging has received increasing attention due to its powerful capacity to represent real scenes as perceived by human eyes. However, studies on effective HDR image watermarking algorithms remain limited. In contrast to watermarking algorithms proposed for low dynamic range (LDR) images, several critical problems, such as the peculiar HDR floating-point number data format and various tone mapping operators (TMOs) that are widely used to adapt HDR images to conventional displays, need to be properly addressed. Hence, a novel HDR image watermarking algorithm robust against the effects of TMOs is proposed in this paper. Two important spatial activity concepts, i.e. the activity of robustness and activity of perception, are respectively defined to characterize the spatial diversity of the robustness and imperceptibility of tone-mapped images. Then, nonsubsampled contourlet transform and singular value decomposition are successively performed to extract the associated structural information which is invariable in HDR images and their corresponding tone-mapped images. In addition, hierarchical embedding intensity and a hybrid perceptual mask are designed to enhance the imperceptibility and robustness of the HDR image watermarking. Experiments with numerous HDR images and TMOs were conducted and the results show that the proposed algorithm is superior to the current state-of-the-art watermarking algorithms in terms of imperceptibility, robustness and embedding capacity.
Keyword:
High dynamic range imaging
Digital watermarking
Tone mapping
Spatial activity
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
S
IF:
2.7
论文数:
2.8K
被引数:
4.2K
机构
引用论文
.png){kind=icon}
Absceso de psoas por Streptococcus agalactiae secundario a espondilodiscitis lumbar腰大肌脓肿，由无乳链球菌（Streptococcus agalactiae）引起，继发于腰椎椎间盘炎。
PREAI
分享收藏Tumeurs du haut appareil urinaire et syndrome de Lynch : doit-on proposer un dépistage systématique ?上尿路肿瘤与Lynch综合征：是否应建议进行系统性筛查？
PREAI
分享收藏The COVID-19 Vaccine Knowledge and Attitude Scale: A Methodological StudyCOVID-19疫苗知识与态度量表：一项方法学研究
OAAI
OAAI分享收藏分享收藏
查看更多内容