ID 原文 译文
24415 考虑嵌入操作的交互影响，该文提出一种基于动态更新失真代价的±k 隐写算法。 Considering the cross impact of the embedding operation, an adaptive ± k steganography is put forward based on the dynamic distortion cost updating strategy Modification Degree Strategy (MDS).
24416 首先分析了中心像素与其邻域的相关性，理论证明了在 4-邻域修改情况下中心像素的最优修改方式，进而提出了失真代价更新策略 MDS(Modification Degree Strategy)； First, the analysis is conducted to prove the optimizing modification of the central pixel under the condition of the neighborhood's modifications. Then the MDS of updating the distortion cost is presented to adjust the distortion cost according to the modification of neighborhood.
24417 并结合该策略设计实现了一种自适应±k 隐写算法。 Finally, the steganography scheme is proposed using the MDS.
24418 实验表明，五元修改方式下算法 UNIWARD-MDS(Pentary Version)在高嵌入率下(0.5~1.0 bpp)的抗 SRM 检测性优于S-UNIWARD(Pentary Version)，同时在抵抗 maxSRMd2 检测时不同嵌入率下均优于 S-UNIWARD(Pentary Version)； The experimental result illustrates that the UNIWARD-MDS (Pentary Version) has a better performance than S-UNIWARD (Pentary Version) at the embedding rate 0.5~1.0 bpp when resisting the steganalysis SRM. Meanwhile the UNIWARD-MDS (Pentary Version) is better than the S-UNIWARD (Pentary Version) at the embedding rate 0.05~1.0 bpp when resisting the maxSRMd2 detection.
24419 三元修改方式下算法 HILL-MDS 和 UNIWARD-MDS(Ternary Version)抗检测性能优于对应的自适应隐写算法 HILL 和 S-UNIWARD(Ternary Version)。 The HILL-MDS and UNIWARD-MDS (Ternary Version) perform better than the corresponding schemes HILL and S-UNIWARD (Ternary Version).
24420 运动目标具有大加速度时，在一定的观测时间内，其瞬时多普勒频率是模糊的。 In a certain observation time duration, the instantaneous frequency of motion target with large acceleration is ambiguous.
24421 若目标存在微动，相应产生的微多普勒会叠加于模糊的多普勒频率之上。 If target has micro-motion, it will cause micro-Doppler modulation which adds in the ambiguous Doppler frequency.
24422 这种现象常见于高速机动目标。 This case is usually met in flexible-motion target with high velocity.
24423 针对提取具有大加速度微动目标的运动特征问题，该文提出一种参数估计方法。 In order to extract micro-motion feature of large acceleration target, a parameter estimation method is proposed.
24424 通过对目标多普勒频率的解模糊以及对目标整体运动的估计和补偿，提取目标的微多普勒分量，在此基础上估计目标的微动周期。 Through the ambiguity resolution of Doppler frequency and the estimation and compensation of bulk motion of target, micro-Doppler extraction is achieved. And then, micro-motion period is estimated.