Medical Image WatermarkingTechniques and Applications>>笔记2
state-of-the-art 最先进的
Error Correcting Codes ECC
discrete wavelet transform (DWT) 离散小波变换
The ECC based watermarking methods attempt to find a trade-off between the number of bits to be embedded and the number of bit-errors that can be corrected.
the technique embeds medical text watermarks into selected sub-band of discrete wavelet transform (DWT) cover medical image coefficients using spread-spectrum technique.该技术使用扩展频谱技术将医学文本水印嵌入离散小波变换(DWT)覆盖医学图像系数的选定子带中。
**Any image com-prises of two sections called ROI and NROI **