该文介绍了一种用于检测和恢复嵌入在信息材料中的数据的装置，这些数据通过在变换域中调制预设数据序列来实现。装置包括变换处理器，用于将材料转换为变换域表示，以及相关处理器，用于对变换域数据符号与预设数据序列的再现版本进行相关处理，从而形成相关输出信号并从中恢复嵌入数据。相关处理器还能够对多个起始位置的变换域数据符号和预设数据序列重复进行相关处理。
摘要：
An apparatus for detecting and recovering data embedded in information material, the data having been embedded in the material in a transform domain representation by arranging for the data to modulate a predetermined data sequence to form modulated data and combining the modulated data with the material. The apparatus includes a transform processor operable to transform the material into the transform domain representation, and a correlation processor operable to correlate transform domain data symbols bearing the modulated data with a reproduced version of the predetermined data sequence to form a correlation output signal and to recover the embedded data from the correlation output signal. The correlation processor is operable to repeat the correlation for transform domain data symbols and data symbols of the predetermined data sequence for each of a plurality of start positions in the transform domain.
展开
扫一扫
11万+
被折叠的 条评论
为什么被折叠?
到【灌水乐园】发言
