数字水印的入门代码，包括LSB DCT CDMA DWT,在原有收集上加了详细的注释，易于学习理解-Watermarking entry code, including LSB DCT CDMA DWT, add in the original collection of detailed notes, easy to learn to understand

image watermarking using DCT CDMA -image watermarking using DCT CDMA ....