High efficiency embedding and anti-clipping digital watermark algorithms based on the LSB, watermark separation and image interpolation

[摘要] Traditional arithmetic of LSB is only replaces the least bit which is retaining the image more better but a waste of memory. Furthermore LSB can not cut out. In order to improve the LSB digital image watermarking method, in this paper, an algorithm based on image interpolation and spatial separation watermarking is proposed. The watermark's high and low frequency separation method is used in the treatment of watermark, and then the image interpolation is performed to improve the anti-cutting performance. The use of linear transformation and embedded the back of the qr code also improve the security of the algorithm. Experimental results show that to replace the last two bits and image interpolation techniques take effects to LSB.

[发布机构] Beijing Institute of Graphic Communication, China^1

[效力级别] 无线电电子学

[关键词] Cutting performance;Digital image watermarking;High-efficiency;Image interpolations;Low-frequency;QR codes;Spatial separation;Watermark algorithms