Abstract:

The traditional digital watermarking technology is relatively mature, but there are some areas has not been fully involved in, such as quantum image watermarking technique and the certification is currently in the initial stage of developing. All of this really solve the bottleneck problem of digital product safety protection on the theoretically by combining quantum computing theory and traditional digital watermarking technology and pointed out a new direction for the information security industry research. Based on wavelet transform theory and its applications in image watermarking algorithm and quantum computing theory have a wide range of applications in cloud security computing and big data, a watermarking algorithm based on quantum Haar wavelet transform is proposed. Algorithm firstly show classic image by using the quantum image representation, then do the quantum Haar wavelet transform of matrix quantization, and lastly text watermarking information is embedded into the quantum wavelet coefficients. Finish process of embed information etc by using matrix transform in classic computer simulate quantum wavelet transform in quantum computer. Experiment result shows that this algorithm has a large embedding capacity, there just subtle change of calculation basis and adjacent pixels correlations of image before and after embedded watermark information, indicates this algorithm have a higher watermark embedding quality.

Key words: quantum image, shift matrix, quantum Haar wavelet transform, digital watermarking