Application of Formed Ripple Markings in Construction of Cement Concrete Deck Pavement
By contrast of both kinds of construction method and in terms of experiences of engineering construction,the paper introduces by specific data details the construction principles for technology for formed ripple markings and makes clear the good role of technology for formed ripple markings in deck pavement.
In practical use, objects in still images and videos are easy to misappropriate with handy image-processing tools and need to be pro- tected. However, the few proposals for object watermarking suffer from resynchronization problems. In this study, we develop an object-based watermarking method based on efficient segmentation using lines paral- lel and perpendicular to two principal axes in the spatial domain. A patch- like scheme is designed to embed and extract invisible watermarks. In contrast with the previous object-based watermarking schemes, extra information for resynchronization is not required to be stored in our method. Experimental results show the robustness of the proposed method against many kinds of geometrical attacks. © 2007 Society of Photo-