转换

For chromatic editing such as fade-in/fade-out and dissolve, the image edge will change from clear to vague and to clear again during the editing process So we use average edge density to detect fade-in/fade-out and dissolve Experiments indicate that this method can detect fade-in/fade-out and dissolve.

并针对两类编辑模型，提出了可以较好地描述各自独特规律的几个参量。根据淡入／淡出和慢转换过程中边缘由清晰到模糊再逐渐到清晰的特点，提出了用平均边缘强度AED进行淡入／淡出和慢转换的检测。

It is the first important step in video analysis and will directly affects the effectiveness of indexing Shot boundary detection is one of our major research interests and we will tackle the following existing problems the ambiguity between gradual change and camera motion, the discontinuity during gradual change, false detection caused by illumination variation and flashlight, automatic threshold selection Firstly, we discuss shot boundary detection in non-compressed domain In chapter 2, we compare some of the commonly used detection methods which are based on frame difference and point out that single feature will not generate good results As a conclusion, we use fuzzy logic to combine multiple features Presently, most frame difference based shot boundary detection algorithms rely on threshold and hence the selection of such thresholds will greatly affect the performance of boundary detection We propose a membership function to define frame difference and calculate the membership with self adaptation according to the statistic distribution of frame differences to satisfy different type of video clips Experiments show that the proposed fuzzy shot boundary detection algorithm can be used with different video types and has a high detection precision and recall In chapter 3, we discuss model-based shot boundary detection algorithms regarding chromatic and spatial editing effects such as fade-in, fade-out, dissolve and wipe Various parameters are proposed to better describe the characteristics of each editing type.

镜头边界的检测是把视频自动地分割为一个个镜头，作为基本的索引单元，因此它是视频分析重要的第一步，直接影响到视频检索的成败。镜头边界的检测是本文研究的重点之一。目前镜头边界检测算法主要存在以下问题：渐变与镜头运动难以区别；渐变过程中的不连续与停顿、光照条件的变化及闪光灯等特殊情况会引起误检测；自动选择阈值比较困难等。本文首先针对非压缩域视频进行了镜头边界检测的研究。在第二章中我们采用了比较流行的基于帧间差的方法。在比较各种帧间差计算方法的基础上，指出使用单一的特征难以取得很好的检测效果，提出用模糊逻辑综合使用各种特征。目前大多数基于帧间差的镜头边界检测算法都采用阈值法进行镜头转换的判别。阈值选择的误差对检测性能有较大的影响，本文提出用隶属度函数定义帧间差较大、中等较大和较小等概念，并根据帧间差的统计分布自适应地确定隶属度，以适应不同类型的视频片断。实验结果表明这种基于糊逻辑的镜头边界检测算法可以适应不同的视频，并具有较高的检测精度和检出率。在第三章中采用基于模型的方法进行镜头渐变的检测，研究了淡入／淡出、慢转换和扫换的模型。

The procedures to achieve fast Fourier transformation and the conversion put vb language used to achieve the overall effect was excellent!

该程序能够实现傅立叶的快速转换和放转换用vb语言来实现，整体效果不错！

Fast Fourier transformation, C language fast Fourier transformation.

快速付立叶转换，C语言实现快速付立叶转换。

The proposed 2DSABS features can (1) avoid the bias problems of transforming the information into linear combinations of bands as does the traditional principal components analysis;(2) select each band by a simple logical operation, called CE feature scale uniformity transformation, to include different classes into the most common feature clustered subset of bands;(3) provide a fast procedure to simultaneously select the most significant features, and therefore dramatically improve the eigen-decomposition computational complexity.

本论文所提出的二维模拟退火波段选取特色有(1)避免转换资讯成波段的线性组合的偏差值问题，这是采用传统的主成份分析方式常见的问题；(2)利用一个简单的逻辑运算，称为「CE特徵维度齐一化转换」，将不同种类的资讯混合，形成具有共通特徵波段的群集子集合；(3)提供一个快速的程序，使能同时地选取最有意义的特徵，并显著地改善特徵分解计算的复杂性。

The conversion between the electromagnetic energy and mechanical energy is completed in the magnetic field, and permanent magnet was applied in this designing to establish magnetic field to complete the conversion of energy.

电机中的电磁能与机械能的转换是在磁场中完成的，本设计中采用永磁体建立磁场，完成能量的转换。

Good conversion tools can be. Xls file conversion for unicode document.

不错的转换工具，可以将。xls文件转换为 unicode文件。

RGB and YUV data of a mutual conversion process, realize file conversion is a good example for beginners.

详细说明：一个RGB与YUV数据相互转换的程序，实现文件导入转换，是初学者的一个好例子。

Batch file conversion: convert all the files you select automatically.

批处理文件的转换：转换的所有文件，您选择自动。

A document for conversion procedures, the designated file format conversion.

一个用于文件转换的程序，实现了指定文件格式的转换。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐