QR Code Based Research on Digital Watermark Algorithm for Remote Sensing Image

A blind watermarking algorithm with strong crop and noise resistibility based on quick response( QR) code for remote sensing image was presented. Firstly,QR code image is generated by use of copyright authentication information. Secondly,the QR code image is scrambled based on Arnold transforms,while the error-correction coding method is introduced to pretreat the watermark image. Finally,considering the properties of the data of remote sensing image,the appropriate strength and position are selected to embed watermark. Watermark detection is the inverse process of embedding watermark. Watermark detection is the inverse process of embedding a watermark,and the majority rule is used to extract and self-correct the watermark information bits. The introduction of QR code effectively enhances the capacity and robustness of the watermark information. Embedded watermark based on the premise of keeping the accuracy of features and statistical properties of remote sensing images was studied. The embedded watermark is not only of good invisibility,but also of strong crop and noise resistibility.