Subscribe Now Subscribe Today
Science Alert
Curve Top
Journal of Applied Sciences
  Year: 2014 | Volume: 14 | Issue: 9 | Page No.: 892-900
DOI: 10.3923/jas.2014.892.900
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail

Study on Image Retrieval Technology Based on Digital Watermark

Mei Zhang

With the rapid development of multimedia and network technologies, the image became an important source of obtaining information and it was a hot research topic how to retrieve the wanted information from many pictures. In order to effectively retrieve the image information, the image retrieval system based on digital watermarking technology was designed and implemented. Two commonly used image retrieval methods were introduced, including text-based image retrieval and content-based image retrieval and their advantages and disadvantages were analyzed. The characteristics, basic principles and typical algorithms of digital watermark were briefly discussed. On the basis of them, the watermarking algorithms based on discrete cosine transform were focused on. The processes of watermark embedding, extracting were emphatically analyzed and their processes were given. The image matching was implemented to retrieve the desired image based on normalized cross correlation method. The experimental simulation results showed that the watermark had good invisibility and the system quickly realized watermark embedding, extracting and matching which had certain theoretical and practical values.
PDF Fulltext XML References Citation Report Citation
How to cite this article:

Mei Zhang , 2014. Study on Image Retrieval Technology Based on Digital Watermark. Journal of Applied Sciences, 14: 892-900.

DOI: 10.3923/jas.2014.892.900






Curve Bottom