图像处理在MATLAB使用双线性插值图像缩放

为了提高数字图像中椭圆检测的效率和准确性,提出了一个基于最小二乘法的改进的随机椭圆检测算法. 该算法随机选取图像中的3 个边缘点,在以这3 个点为中心的窗口内,从边缘点中拟合出可能椭圆,并通过随机选 取的第4 个边缘点来确认可能椭圆. 利用直接最小二乘法椭圆拟合的特性,引入可能椭圆边缘点收集和椭圆重新 拟合的迭代过程来提取最终的椭圆参数. 通过对含有不同噪声的仿真图片和包括残缺椭圆的实际图片的实验表 明,新算法的改进是有效的. 与原算法相比,新算法降低了对参数的依赖性,提高了检测的速度、稳定性和准确性, 同时保留了原算法的抗噪声能力.(: An imp roved randomized ellip se detection algorit hm based on least square approach was proposed to enhance t he efficiency and accuracy of ellip se detection in digital images. This algorit hm randomly se2 lect s three edge point s in t he image , and t hen uses least square approach to fit all t he edge point s in three windows , which are defined by t he t hree edge point s. The forth edge point is randomly selected to judge whet her a possible ellip se exist s in t he image. Utilizing the characteristic of direct least square fit ting of ellip se , an iteration process of edge point collecting and ellip se refit ting of possible ellip se was int roduced to ext ract t he final ellip se’s parameters. Artificial images wit h different level s of noise and nature images containing incomplete ellip ses were employed to test t his algorithm. Experimental result s show that t he improvement s are notable. Compared with the original algorit hm , t he propo sed algorit hm reduces)

线弹性介质中摩擦力-振动相互关系研究，供动力学研究之用(Friction-induced vibration in linear elastic media with distributed contacts)

现代信号处理大作业2-2，实现wv分布并画出3d图，指出了信号项和交叉项(2-2 large modern signal processing operations to achieve wv distribution and draw 3d map, pointing out items and cross-term signal)

说明：  matlab仿真的，功能是实现相关峰值的提取。能够在低信噪比下得到效果较好的相关峰(matlab simulation, feature extraction is to achieve correlation peak. Able to get better low SNR correlation peak)

偏最小二乘（PLS）算法建模，并提供一个实例分析，提供异常过程监控Q统计量和T统计量。检测出故障。(Partial Least Squares (PLS) algorithm modeling, and provides a case study to provide process monitoring abnormal Q statistic and T statistics. To detect the fault.)

张正友标定工具箱，matlab,用于摄像头内参的标定(Calibration toolbox by zhangzhengyou )

计算十字叉丝的在不同距离的衍射图像,仿真效果非常好，包含了阵列信号处理的常见算法，主要为数据分析和统计，语音信号的采集与处理，数字信号处理课设，雅克比迭代求解线性方程组课设。

matlab运动目标的一种背景消减的方法(Moving targets to reduce a background of the method )

通过这个实验，熟悉并能够灵活运用曲线回归或直线回归的方法去解决实际生活中的问题。(Through this experiment, familiar and flexible use of curvilinear regression or linear regression methods to solve real life problems.)

利用形态开—闭组合去除信号噪声，效果不错。可以参考。(Use form-closed combination remove a signal noise, the effect is good. Can reference.)