低分辨率

• Adsl technology can literally transform the existing public information network from one limited to voice , text and low - resolution graphics to a system capable of bringing simultaneous switched digital video and other advanced , interactive services to everyone ' s office or home
  Adsl技术确确实实地能把现有的、局限于传输声音、文本和低分辨率图形的公共信息网改造成能同时将交换的数字视频和其它高级交互式服务带到每个人的办公室或家庭的系统。
• The result is good for high - resolution images , but is inefficient for middle resolution images . developed another new method for selecting optimal segmentation scale : objects max - area method . the graph that shows the relationship of objects max - area and segmentation scale is ladder like increased
  该方法能同时确定影像中多种地物类别的最优分割尺度，证明了不同类别有其相应的最优分割尺度，突破了最优尺度选择曲线只能适用于一个类别的限制，但该方法只适用于高分辨率影像信息提取最优尺度的选择，对于中低分辨率的影像效果不甚理想。
• Low resolution satellite imagery , meteorological data and derived products and information on software tools , methods and techniques used for environmental monitoring , crop forecasting , early warning , desert locust control and others , from the artemis and agrometeorology groups , fao environment and natural resources service ( sdrn )
  来自artemis和粮农组织环境和自然资源处( sdrn )低分辨率卫星图像、气象数据、衍生产品和环境监测、收成预测、预警、沙漠蝗虫控制和其它工作使用的软件工具、方法和技术信息。
• We register the sub - images decomposed by wavelet transformation using ga or aca , then the results were applied as the start point for the registration of fine - image using powell ’ s method . these registration methods could efficiently restrain local maxima of mi , speed up the registration process and improve optimization ability in local search
  首先对图像进行小波分解,在低分辨率情况下采用蚁群算法或者遗传算法进行搜索,高分辨率时采用powell法进行优化,这样能够有效地避免陷入局部极值、提高优化速度,同时也可以克服智能优化算法局部搜索能力不强的缺点。
• The state - of - the - art of the study of ship and ship wake detection is summarized . the target types of the ship and its wake in different resolution sar images are analyzed and a conclusion is draw . the issue of ship target detection to the low or middle resolution sar image is point target detection while the issue to the high - resolution sar image is hard target detection
  本文在文献综述的基础上，全面分析了sar图像舰船目标及其尾迹检测的研究现状，通过应用sar图像理解的基本理论，分析了不同分辨率图像中舰船目标及其尾迹的类型，并得出结论：中低分辨率sar图像中的舰船目标检测是点目标检测；高分辨率sar图像中的舰船目标检测是硬目标检测； sar图像舰船尾迹检测是线性目标检测。
• For some low - resolution radar on active duty , we can only get the doppler cross image of the echo because of their low longitudinal resolution . therefore some analysis and algorithms for low - resolution radar are given and verified by measured data and simulation data results
  对于现役的大量的低分辨雷达，由于纵向的低分辨率，所以只能对得到的回波数据进行横向的多普勒成像，为此本文对低分辨雷达的成像进行了系列的分析，提出了一些算法，并用实测数据和计算机仿真数据进行了验证。
• Distribution of wavelet coefficients in those sub - images is just appropriate for the properties of human vision systerm . it is that eyes are most sensitive to sub - image in the low resolution ratio and less sensitive to sub - images in the high resolution ratio . so a little loss of information in high sub - images may not bring out marked change to vision effect of construct image
  经分解后的各个子图中的小波系数的分布恰好适合人类视觉系统的特点，即人眼对于低分辨率子图更敏感，对于高分辨率子图较不敏感，因此高分辨率子图中的信息稍有损耗并不会显著影响重构后图像的视觉效果，这样实现图像的高压缩比就成为可能。
• The sticking point is when getting the wavelet modulus maximum , setting a limit value , only those larger than the limit value can be recorded , and the limit value is dynamic . so the remaining wavelet modulus maximum can best display the important characters of the image . after compute the seven invariant moments through using the wavelet modulus maximum of the image , similarity is given by the euclidean distance between two images " normalized moment vectors
  改进之处主要在于，在求取不同分辨率下的模极大值时，设定一个阈值，只留下当前尺度(分辨率)下模极大值大于阈值的那些模值，而且随着分辨率的增加，阈值不断的改变，这样就可以在求得的高分辨率的模值图像中过滤掉低分辨率下的已经使用过的信息，从而使模值能够充分描述图像的重要特征，然后利用多尺度下的模值求出七个不变矩，并进行归一化，采用图像特征向量归一化的结果计算欧氏距离来表示两幅图像的相似度。
• In order to decrease the cost , simplify the structure of the pmsm servo system and at the same has no effect on the system performance , this paper uses hall element as the position sensor , which has very low solution but very low cost , and in order to realize sinusoidal current drive of pmsm , this paper presents a new rotor position estimator based on flux estimation
  为了降低成本，简化系统，本文采用低分辨率的霍尔元件作为pmsm伺服系统的位置传感器，采用基于磁链观测法的低分辨率位置传感器控制技术，来估计电机转子的实时位置和转速，实现电流的正弦换向，减小转矩脉动。