作者
Anu Pramila, Anja Keskinarkaus, Valtteri Takala, Tapio Seppänen
发表日期
2017/8
期刊
Multimedia Tools and Applications
卷号
76
页码范围
16063-16084
出版商
Springer US
简介
Thus far the research of print-cam robust watermarking methods has focused on finding new methods for embedding and extracting the watermark. However, the capturing process itself, has been neglected in scientific research. In this paper, we propose a solution for the situation when the watermarked image has been captured in a wide angle and the depth of focus of the camera is not deep enough to capture the whole scene in-focus resulting in unfocused areas. The solution proposed here relies on a subfield of computational photography, namely all-in-focus imaging. All-in-focus images are generated by fusing multiple images from the same scene with different focus distances together, so that the object being photographed is fully in focus. Traditionally, the images to be fused are selected by hand from the focal stack or the whole stack is used for building the all-in-focus image. In mobile phone …
引用总数
201820192020202120222023202423467104
学术搜索中的文章