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Locating-Voltage-Sags
电压跌落是最严重的动态电能质量问题之一，
精确定位电压跌落起止时间是应对电压跌落问题的
重要前提和基础。由于电压采样信号往往有噪声分
量，现有的方法在定位电压跌落的起止时间时存在
局限性。本文提出利用多小波变换及相邻系数去噪
的电压跌落定位方法。多小波兼有对称性、正交性、
有限支撑性和二阶消失矩等优异的信号处理性能，
利用GHM多小波可以准确定位电压跌落起止时间。
多小波变换系数在每层之间具有对应关系，多小波
相邻系数将紧相邻的若干个系数作为一个整体来确
定阈值，考虑了系数之间的相关性，能获得更好的
去噪效果。通过 Matlab 进行仿真验证，仿真结果表
明，所提出的方法的正确性。
(Voltage sag is one of the most serious
dynamic power quality problems. Critical start-time
and end-time are important indices for voltage sags.
But the sampling signals often have noisy component,
the locations of start-time and end-time are hard to get.
Wavelet is an effective tool for those non-stationary
signal processing and has been used in this field. Local
feature in the signal can be enlarged after the
transformation using the scalar wavelet. But scalar
wavelets cannot contain orthogonality, symmetry,
compact support and higher order of vanishing
moments simultaneously. In this thesis, multi-wavelets
GHM is used to detect and locate power quality
disturbances. Multi-wavelets offer many excellent
properties such as the same approximation order but
more compact support. The dependence of the
multi-wavelets coefficients varies with the level, so
neighboring coefficien)
- 2014-03-25 17:08:50下载
- 积分：1
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ScanZbuffer
扫描线Zbuffer算法
1。算出模型的包围盒。
2．每条扫描线打点时并不是包围盒内整条线打点，而是先搜索需要刷新的范围， 只是该范围内打点。
(One scan line Zbuffer algorithm. Calculate the model bounding box. 2. Each scan line runs inside the box when not surrounded by the entire line runs, but first need to refresh the scope of the search, but the scope of RBI.)
- 2020-12-31 21:58:59下载
- 积分：1
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二维最小均方误差TDLMS（主要用于小目标跟踪）
二维最小均方误差背景预测算法TDLMS，常用于目标检测，经实测，效果较好(Two dimensional minimum mean square error background prediction algorithm TDLMS, commonly used in target detection, measured, the effect is better)
- 2021-03-17 01:59:21下载
- 积分：1
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jbigkit-2.1
说明： 此jar包用于解析jbig格式文件的工具包，调用接口即可(This jar package is a toolkit for parsing JBIG format files and calling interfaces.)
- 2020-06-16 13:40:02下载
- 积分：1
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数字图像处理_第三版_中_冈萨雷斯
《数字图像处理（第三版）》，中文版，作者是（美）冈萨雷斯，本书是数字图像处理经典著作。("Digital Image Processing (3rd Edition)", Chinese Edition, by Gonzalez, USA. This book is a classic work of digital image processing.)
- 2019-06-10 10:51:31下载
- 积分：1
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pivsingle
用于pivlab处理得到的流场数据画图，具体使用见注释(Flow field data plots for piv processing)
- 2021-03-17 14:49:20下载
- 积分：1
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碎纸片拼接
此matlab程序用于横向和纵向都被剪碎的纸片的拼接复原，高质量(This matlab program is used for the stitching of both horizontal and vertical pieces that are cut and broken, and of high quality)
- 2021-01-04 20:28:55下载
- 积分：1
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cv-project
该文章包含了计算机视觉方面的论文及代码，如目标追踪、目标检测、人脸识别、机器学习、分割等(this document contains several papers and codes,such as object tracking、object detection、face recognition and so on)
- 2017-04-04 22:17:41下载
- 积分：1
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visiblemark1
空域可视水印算法（matlab实现）， 考虑了HVS特性，可见水印嵌入同时考虑了原图像和水印图像视觉特性。(airspace visual watermarking algorithm (Matlab achieved), in consideration of HVS features embedded watermark can be seen taking into account the original image and a watermark image visual characteristics.)
- 2005-06-23 18:11:39下载
- 积分：1
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skin
matlab肤色检测程序。rgb2tsl.m用作颜色模式转换,将RGB模式转换为TSL模式。skin.m实现肤色检测，肤色区域为白色，非肤色区域为黑色。(matlab color detection procedure. rgb2tsl.m color model used for conversion, will be converted to RGB mode TSL model. realize skin.m color detection, color region is white, non-color region is black.)
- 2008-06-02 10:33:15下载
- 积分：1
