As for high - energy linear induction accelerator , miniaturizing pulse - forming line ( pfl ) is helpful to minify the size of the massive pulsed power system . at the same time , wealth and space could be economized 同时脉冲形成线小型化对于一台大型直线感应加速器来说，不仅有利于减小其庞大的脉冲功率系统，而且节省了大量的财力资源和空间体积。
In fact , scaling technology is an essential component in many image / video processing such as to magnify / minify still image , to achieve special effect like picture - in - picture , to compress or transform digital video with spatial scalability etc . in this thesis we mainly employ this technology in video transcoding , which is a powerful but computationally intensive tools to convert one kind of video format into another , meeting different demand such as lower bitrates or various display terminals . in sum , there are two kinds of scaling schemes : one is in spatial domain and the other in transform domain . the scheme in transform domain can provide very good performance , that is , efficient computation and desirable image quality , whereas it has some disadvantage which is impossible or hardly to o vercome , especially some scenarios require arbitrary ratio zoom in horizontal and vertical , and excellent visual effect 两种方法都各有其利弊：变换域的方法是利用现有常用的视频压缩方案都是基于dct这个特点，所以可以直接在变换域做处理，这样可以节省大量的计算，但其缺点是由于dct是基于块的变换，如8 8 ，所以很难找到一种方案可以进行任意比例的缩放，尤其是在纵横缩放比例不一致的情形，但这对诸如hd缩放到sd和空域分级的压缩方案来说尤为重要，基于空域滤波的方法却没有这样的限制，同时可以保证缩放后的图像的质量远高于基于变换域的方法，为了达到高的缩放质量，就不可避免导致计算量过大。
" electronic 1c chip drawing system " provides many functions such as " modify the position of the component ' s diagram " " modify the color of the component ' s diagram " " magnify and minify the component ' s diagram without distortion " " change the type of drawing line " " edit some physical properties of the component " " copy and paste diagram of one component " " delete one or more component diagrams " " move more than one components " positions " " change the z _ order of the diagram , set it to back or bring it to front " " save the drawing of the electronic components to one file and the file extension name is * . brd " " print the drawing " . users can finish all these functions easily by clicking and dragging the mouse 电路板元器件绘制系统主要完成了使用鼠标拖拽、鼠标点按的方式绘制电路板上各种常见的元器件图形；编辑电路板上元器件图形的位置；编辑元器件图形的颜色；不失真的对器件图形进行放大和缩小；编辑元器件图形的线型；编辑电路板上各个器件的物理属性(比如电阻的阻值大小、电容的容量大小、额定电压等) ；复制已经绘制出的电路板上的器件；粘贴剪贴板上的器件；删除单个或多个已经绘制出的器件图形；同时改变多个器件图形的位置；改变绘制区内各个元器件的zorder顺序，也就是可以将层叠在一起的图形置前或置后；把绘制的电路板器件图保存到指定文件中；能打开、查看和修改保存的电路板器件图；打印电路板器件图。
And with its result , 1 : 2000 digital maps of the surroundings in lake dianchi are minified to 450 square kilometers 1 . 10000 digital maps . this paper will deal with the theoretical principle of the applied programs the methods of the underwater topography surveying and the principle of the data processing program and digital mapping program , analyze the rationality and operability and automatic extent of the outside and inside working methods and the data processing program . according to the working experiences , this paper generalizes a low cost , practical and automatic method of underwater topographic survey hi inland lake and river basin 昆明理工大学硕士研究生论文论文摘要( abs切act )本文就项目所涉及的理论基础、技术方法、作业手段、数据处理、内业成图等方面的内容进行系统地阐述;并介绍了项目实施中所采用的一些特色技术、特殊方法，以期为类似项目在应用方面提供有价值的、合理的、操作性强的、自动化程度高的、能降低成本的、提高经济效益的实用技术、方法和经验。
