数字图像纯位相编码分析

Analyze of phase-only encode of digital image

研究了图像傅立叶变换过程中的振幅与位相问题,突出了位相在整个变换中的重要性,并利用双位相函数对图像进行加密编码和解码,计算机模拟表明双位相编码和解码能有效的抑制附加噪声。

Amplitude and phase of Fourier transform of image are studied and the importance of phase is verified. Double phase functions are used in the process of image encode and decode. The rusults of computer simulation show that touble phase encode and decode are effectively in eliminating the noise.