Simultaneously , a new fbp criterion is presented based on the gray - lavel and contour for the image of gabor spectrogram and the relation parameter is used to make flutter boundary prediction . the functions of the method are studied by computer simulation and further examined by using several flutter testing data ( low - speed wind - tunnel , high - speed wind tunnel and flight ) 本文详细研究了颤振信号联合时频谱图的特征，应用图像边缘识别方法对颤振信号时频谱图的轮廓、灰度进行了综合分析，给出了一种全新的颤振余量定标量化法，依此量化值完成对颤振边界的外推。
Based on the theories of the first two chapters , chapter 5 introduces the theoretical foundation and method of the software design of the license plate recognition system in detail . in this system , a license plate is fixed in a position and cut apart by verge examination based on the differential operator and threshold algorithm . then outline method and projection method are used as methods of characteristic extracting , lastly neural network is used as a method to recognition the single character 第五章是在前两章的理论基础上，详细介绍了车牌识别系统软件设计的实现方法和实验结果，应用图像分割的理论对车牌进行边缘检测和提取，利用轮廓和投影的方法提取字符的特征，最后用神经网络的方法对所得字符进行识别。
The remote screen watch function and the remote control function is realized scientifically by pure soft mode . it break through the technical obstacle and cost restrict in practically application , so , it bring very important effect in electronical network test sy stem . there are some remote control software in market , most of them just achieved some simple function , for example , turning off the computer , downloading some files , control the mouse and keyboard , but this system can remote control through the mechanism of transferring image and message 本人运用哈夫曼等算法科学地实现图像压缩，并用套接字技术实现网络通讯工作，应用图像编码、多线程、 windows消息机制等技术，以软件方式创造性地实现了远程屏幕监视及远程控制功能，突破了以往类似系统在实际应用中的技术障碍和成本限制，从而在网络电子考试系统中产生了重要的作用。
