1.This paper analyzes the statistics of speckle in SAR. And based on wavelet transform, this paper puts forwards a new method for speckle suppression. After wavelet transform, Lce filter is adopted for HH part and CFAR(Constant False Alarm Ratio) is used for HG、GH、HH.
该文分析了合成孔径雷达(SAR)图像中的相干斑(Speckle)的统计特性,基于小波变换(WT),提出了一种新的相干斑滤波方法,该方法将小波变换后的HH分量采用Lee滤波,对HG,GH和GG分量则利用恒虚警技术(CFAR),保留重要的目标和边缘,再将这四个分量进行重构。
2.In order to further illustrate the character of the new method of iterative shift and add for astronomical image reconstruction, the inflence of additive detector noise on the speckle interferometry, the speckle masking and the iterative shift and add is analysed respectively.
为进一步说明天文像复原新方法———迭代位移叠加法的性质 ,对探测器的附加噪声在斑点干涉术、斑点掩模法和迭代位移叠加法中的影响分别进行了分析。
3.The basic principle of digigtal speckle correlation method is described with the affine transformation in this paper. Based on the analysis of the effects of speckle displacements and their derivatives upon the correlation of specklegrams which are exponsed before and after object deformation,the correlation algorithm is simplified,and a correlation search method is presented.
本文用仿射变换阐述了数字散斑相关方法的基本原理,通过分析散斑位移及其导数对物体变形前后散斑图的相关性的影响,对相关算法作了简化,提出了相关搜索方法.
4.Contain liquorice extract, remove speckle, restrain tyrosinase activity, block away melanin during tranformation to speckle, prevent pigmentation, control free radical, enhance skin elasticity, postpone skin aging.
甘草萃取精华，具有去斑功效的天然成份，有助于黑色素转化成色斑的过程中发挥功效，舒缓色素加深、沉淀及黑色素的形成，增加肌肤弹性，延缓衰老。
5.INFLUENCES OF LASER SPECKLE ON 3-D SHAPE MEASUREMENT
三维面形测量中激光散斑的影响
6.In this paper first according to digital speckle correlation method combining sub-pixel seeking technique and double linear inserting value arithmetic tensile test on fibre-glass beehive structure with core is accomplished to test the mechanics properties, and obtain experiment result in reason, and analyse synchronously error factor.
本文首先根据数字散斑相关原理,利用双线性插值算法的亚像素搜索方法,对玻璃纤维蜂窝夹芯结构的拉伸力学性能进行了测试,获得了较为合理的结果。
7.Using the Method or Speckle Interferometry to Determine Strain Field Around a Crack Tip in Steel Fiber Reinforced Concrete
用散斑干涉法确定钢纤砼裂纹尖端应变场
8.This paper firstly discusses the rationale of SAR image simulation from geometric and radiometric characteristics of SAR image,such as Range Doppler(RD) model,backscattering model,and speckle model.
本文首先从SAR图像的几何特征和辐射特征出发,探讨了SAR图像模拟技术的原理,分析了RD(Rang Doppler)模型,后向散射模型和斑噪模型。
9.Because there is speckle noise in SAR image and the background clutter of water is usually very complex, weak target detection is a big challenge for conventional methods.
SAR图像存在相干噪声以及水面背景杂波的复杂性,传统方法对于弱目标检测存在困难。
