UC知道信息方面的翻译(英文翻译中文)
来源：百度知道 编辑：UC知道 时间：2024/06/02 00:50:24
Transform coefficients of the host are grouped into vectors and perturbed using noise-resilient channel codes derived from multidimensional lattices. The pertur¬bations are constrained by a maximum allowable mean-squared error that can be introduced in the host. Channel-optimized VQ can be used for increased robustness to noise. The generic approach is readily adapted to make retrieval possible for applications where the original host is not available to the retriever. The secure data in our implementations are low spatial and temporal resolution video, and sampled speech, while the host data is QCIF video. The host video with the embedded data is H.263 compressed, before attempting retrieval of the hidden video and speech from the re-constructed video. The quality of the extracted video and speech is shown for varying compression ratios of the host video.
变换系数的主机可分为载体和摄利用噪声复原码频道源自多格. 该摄受限于最大允许平均误差,可引入主机的. 渠道优化的VQ可用于提高信噪比. 通用的做法是容易适应,使检索尽可能申请把原来的主持人是不是可 寻回的. 可靠的数据,在我国实现低时空分辨率的视频,并进行了取样讲话 而主机的数据是视频影像. 主持人视频与嵌入式数据压缩的H.263 , 然后再设法取出隐藏的录象和讲话,从重新构建了录像. 质的提取和录像讲话,是表现为不同压缩比的视频主机.