| 1. | The algorithm in frequency _ domain is relatively robust , compared with the one in spatial _ domain
引用时空域和频率域的经典的水印算法，指明了数字水印的基本框架。 |
| 2. | In this paper , by using monte carlo method with irregular grid random walk in time - space domain the problem of mass concrete transient temperature field was solved
摘要利用求偏微分方程的蒙特卡罗算法，通过在时空域中不规则网格随机游动来求解大体积混凝土不稳定温度场。 |
| 3. | The paper defines a set of metallotectonicses , which are interrelated together under a certain space - time domain and the same tectonic regine or some particalar geologic events , as metallotectonic series
成矿构造系列指一定时空域中、同一构造体制下或某一特殊地质作用过程中形成的相互联系的一套成矿构造的总和。 |
| 4. | Abstract : the paper defines a set of metallotectonicses , which are interrelated together under a certain space - time domain and the same tectonic regine or some particalar geologic events , as metallotectonic series
文摘:成矿构造系列指一定时空域中、同一构造体制下或某一特殊地质作用过程中形成的相互联系的一套成矿构造的总和。 |
| 5. | But self - organized criticality ( soc ) is a kind of weak chaos nature : " edge of chaos " ( non - stable steady state ) , appearing only in the specific space - time region in specific stage at self organization process of crustal movement
“自组织临界态” ( soc )是一种弱混沌性质的“混沌边缘态” （非稳定定态） ，只出现于地壳运动自组织过程特定阶段中的特定时空域。 |
| 6. | This paper employed the characteristics of the hvs ( human visual system ) responded to the image contents and realized the two kinds of image - adaptive watermark algorithm , one is in the spatial domain based on the statistics theory and another in the dct domain with meaningful digital watermark
本文利用hvs人类视觉系统模型，提出了图像内容自适应的数字水印算法，分别实现了时空域中的统计原理水印算法和dct变换域中的有意义水印算法。 |
| 7. | Video object segmentation techniques are discussed , theories and techniques related to video segmentation are introduced and the existing typical algorithms of motion - based and spatiotemporal segmentation are analyzed and compared with the emphasis on analysis of spatiotemporal segmentation algorithms based on 3d region growing
本文以视频对象分割技术为研究课题，首先介绍视频分割相关的理论与技术，然后对现有的基于运动和基于时空域相关两大类分割算法进行对比研究，并把重点放在基于3d区域生长的时空域分割算法的分析上。 |
| 8. | The chaos sequence was applied in these two algorithms to increase its security and was served separately as the random watermark generator and the watermark image encryption techniques . due to the analysis of the image characteristics , we determined the watermark strength by the classification of the image content and obtained better robustness and imperceptibility . new algorithms of meaningful digital watermarking in svd domain with chaotic transform encryption are proposed
混沌序列在这两类算法中分别作为随机水印信号发生器和二值图像水印的混沌加密手段，具有安全性高、形式简单的优点；利用hvs特性，分别在时空域和dct频率变换域中计算图像内容的自适应嵌入强度，增强了算法的稳健性；水印的嵌入和检测计算复杂度小，算法简单。 |
| 9. | Analyzed the signal of 3 - d spatio - temporal sampling in spatio - temporal domain and frequency domain , according as the base principle of sampling , adopted more - dots - marked method , gained random spatio - temporal sampling matrix of digital video signal , it proved that arithmetic is accurate and efficiency
在时空域和频域上分析三维采样的数字视频流信号，以采样矩阵方法为依据，采用多点标定方法，得到任意数字视频流的时空采样矩阵。计算机仿真实验证明了该方法的正确性和可行性。 |
| 10. | Proceeding with several key problems about spatiotemporal segmentation , this paper discusses the generation and distribution of seeds in 3d region growing , provide the similarity measurement between pixel and volume , design the post processing and construct spatiotemporal data structure to support the algorithm . homogeneous video components with similar color feature are obtained
从时空域分割要着重解决的几个关键问题入手，本文探讨了3d区域生长的种子分布和生成方法，给出了区域生长过程中的像素和元素之间的相似度准则和后处理过程，并构建了相应的时空域数据结构来支持生长算法的进行。 |
