一种双变换的彩色图像全息水印方法

一种双变换的彩色图像全息水印方法，为一种基于四元数傅立叶变换和离散小波变换的彩色图像全息水印算法。该方法利用傅立叶全息技术与离散小波变换制成全息图，得到全息水印对角高频子图。接着，将全息水印对角高频子图嵌入四元数矩阵实部系数中，进行逆四元数傅立叶变换，最终得到含水印的彩色图像。

Disclosed is a dual-transform color image holographic watermarking method, which is a color image holographic watermarking algorithm based on a quaternion Fourier transform and a discrete wavelet transform. The method comprises the following steps:

1. 使用傅立叶全息技术和离散小波变换制成全息图。
2. 获取全息水印对角高频子图。
3. 将全息水印对角高频子图嵌入四元数矩阵实部系数中。
4. 进行逆四元数傅立叶变换。
5. 获得含有水印的最终彩色图像。

一种双变换的彩色图像全息水印方法,为一种基于四元数傅立叶变换和离散小波变换的彩色图像全息水印算法,利用傅立叶全息技术与离散小波变换制成全息图,得到全息水印对角高频子图,并将全息水印对角高频子图嵌入四元数矩阵实部系数中,进行逆四元数傅立叶变换得到最终的含水印彩色图像。Disclosed is a dual-transform color image holographic watermarking method, which is a color image holographic watermarking algorithm based on a quaternion Fourier transform and a discrete wavelet transform. The method comprises the steps of making a hologram by using the Fourier holographic technology and the discrete wavelet transform, obtaining holographic watermarking diagonal high frequency sub-images, embedding the holographic watermarking diagonal high frequency sub-images into quaternion matrix real part coefficients, performing an inverse quaternion Fourier transform, and obtaining a final color image containing a watermark。