A noval fragile watermarking method for medical images using quadtree structure

Lingjian Chen; Qianjin Feng; Feng Yang; Wufan Chen

doi:10.1109/IEMBS.2005.1615927

A noval fragile watermarking method for medical images using quadtree structure

Conf Proc IEEE Eng Med Biol Soc. 2005:2005:6258-61. doi: 10.1109/IEMBS.2005.1615927.

Authors

Lingjian Chen¹, Qianjin Feng, Feng Yang, Wufan Chen

Affiliation

¹ Key Lab. for Medical Imaging Processing, Southern Medical University, Guangzhou (510515), China.

PMID: 17281697
DOI: 10.1109/IEMBS.2005.1615927

Abstract

This paper presents a new fragile watermarking scheme based on integral wavelet transform. The proposed method uses the quadtrees structures received by the wavelet decomposition, statistical information on the nodes and secret key to choose the locations where to embed the watermark. Only one bit watermark information will be hidden in the found position. Any changes on the fragile watermarked image will break the way to find out the correct position where the watermark is embedded. The preliminary experimental results indicate that the proposed method conforms to the human perception characteristics and provides a perceptually invisible fragile watermark with fewer image data modified, compared with some other conventional fragile watermarking methods.