[图形图象] SIFT-like
sift特征提取算法，Sift算法简介Sift算法是David Lowe于1999年提出的局部特征描述子,并于2004年进行了更深入的发展和完善。Sift特征匹配算法可以处理两幅图像之间发生平移、旋转、仿射变换情况下的匹配问题。
SIFT algorithm is a local feature descriptor proposed by David Lowe in 1999, and has been further developed and improved in 2004. SIFT feature matching algorithm can deal with the problem of translation, rotation and affine transformation between two images. (2020-11-05, matlab, 1786KB, 下载6次)
[图形图象] 2014专业综合课设程序及说明
设计一个20Hz~20KHz范围内的频谱分析仪（用计算机声卡）；
要求：
1） 用计算机声卡实时采集语音信号，并实时显示时域波形信号；
2） 可以从计算机中读取语音信号文件，并能够实时显示时域波形信号；
3） 实现对信号进行幅度上的放大、缩小，存储等；
4） 实时显示信号的频谱，信号的频谱分辨率可以进行设置；
5） 采用常见的低通、高通、带通、带阻（50hz）滤波器对信号进行滤波，滤波器阶数可调，带宽可调，观察信号频谱的变化；
6） 对信号频谱进行非实时高分辨率分析；
7） 编制GUI用户界面。
8）掌握声卡模拟端输入的电压电路规格，并进行物理信号的测量；
Design a spectrum analyzer (with computer sound card) in the range of 20Hz ~ 20kHz;
requirement:
1) The computer sound card is used to collect the speech signal in real time and display the waveform signal in time domain;
2) It can read the voice signal file from the computer and display the waveform signal in time domain in real time;
3) Realize the amplification, reduction and storage of signal amplitude;
4) Display the spectrum of signal in real time, and the spectrum resolution of signal can be set;
5) The common low-pass, high-pass, band-pass and band stop (50 Hz) filters are used to filter the signal. The order of the filters is adjustable, the bandwidth is adjustable, and the change of the signal spectrum is observed;
6) Non real time high resolution analysis of signal spectrum;
7) Prepare GUI user interface.
8) Master the input voltage circuit specification of sound card analog terminal, and measure the physical signal; (2020-06-03, matlab, 1008KB, 下载3次)
[图形图象] study
SPWM法就是以该结论为理论基础，用脉冲宽度按正弦规律变化而和正弦波等效的PWM波形即SPWM波形控制逆变电路中开关器件的通断，使其输出的脉冲电压的面积与所希望输出的正弦波在相应区间内的面积相等，通过改变调制波的频率和幅值则可调节逆变电路输出电压的频率和幅值
SPWM method is based on this conclusion. The PWM waveform, which is equivalent to sine wave when the pulse width changes according to the sine law, is used to control the on-off of the switch device in the inverter circuit, so that the area of the output pulse voltage is equal to the area of the desired output sine wave in the corresponding interval. By changing the frequency and amplitude of the modulation wave, the output voltage of the inverter circuit can be adjusted Frequency and amplitude of (2020-05-11, matlab, 18KB, 下载1次)
[图形图象] fliter
空域滤波、中值滤波、Laplacian滤波器、频率域滤波器
Spatial filter, median filter, Laplacian filter, frequency domain filter (2020-05-09, matlab, 2KB, 下载4次)
[图形图象] 频域滤波器
频域滤波器器的一些相关实验和滤波器的实现（包括理想低通，Butterworth低通，高斯低通，理想高通，Butterworth高通，高斯高通滤波器）
Some related experiments of frequency-domain filter and Realization of filter (including ideal low-pass, Butterworth low-pass, Gauss low-pass, ideal high pass, Butterworth high pass, Gauss high pass filter) (2020-04-21, matlab, 4666KB, 下载3次)
[图形图象] trilateral filter1
对双边滤波器给予改造，用于去除高斯，脉冲及其混合噪声
Used to remove Gaussian, impulse and mixed noise (2019-11-18, matlab, 1660KB, 下载1次)
[图形图象] Untitled
内含Gabor滤波器的指纹滤波，指纹方向图的计算，归一化处理，最近刚自己看论文码出来的，需要的自取
fingerprint of direction calculating Gabor extrating (2019-10-18, matlab, 1KB, 下载4次)
[图形图象] matlab
对图像加噪声，并通过多种滤波器对起进行处理；还有Haris算子对角点进行检测操作
Noise is added to the image and processed by various filters, as well as corner detection by Haris operator. (2019-01-03, matlab, 2250KB, 下载2次)
[图形图象] bilateralTextureFiltering-master
保留图形纹理的去噪滤波器
效果显著
纹理清晰
De-noising filter with retained graphic texture
Remarkable effect
Clear texture (2018-06-08, matlab, 6524KB, 下载10次)
[图形图象] build_graph_modifyed
％帧索引
上一个fram检测的%%索引
%%查找重叠的边界框。
%%我们忽略边界框大小发生较大变化的转换。
? %%每个解压缩窗口将有一个指向前一帧中邻居的索引列表。
％dres.nei（f1（i），1）.ovs = ovs1（inds1（inds2））;
%% indices for detections on this frame
%% indices for detections on the previous fram
%% find overlapping bounding boxes.
%% we ignore transitions with large change in the size of bounding boxes.
%% each detction window will have a list of indices pointing to its neighbors in the previous frame.
% dres.nei(f1(i),1).ovs = ovs1(inds1(inds2)); (2018-05-20, matlab, 1KB, 下载0次)
[图形图象] 计算器
MATLAB的GUI实现简易计算器功能，功能简单，适用于matlab的初级开发学习！
The GUI of MATLAB implements the simple calculator function (2017-12-08, matlab, 7KB, 下载3次)
[图形图象] gabor-master
gabor滤波器用法例子，可以拿来学习一下
a sample of gabor filter (2017-07-17, matlab, 88KB, 下载1次)
[图形图象] Untitled3
高斯滤波器是一类根据高斯函数的形状来选择权值的线性平滑滤波器。高斯平滑滤波器对于抑制服从正态分布的噪声非常有效。
The Gauss filter is a class of linear smoothing filters that select weights based on the shape of the Gauss function. The Gauss smoothing filter is very effective in suppressing noise that obeys normal distribution. (2017-07-11, matlab, 1KB, 下载5次)
[图形图象] greetings
季节性假日分形。
问候语（PHI）生成一个季节性假日分形，取决于参数φ。PHI的默认值是黄金比率。其他的φ值会发生什么？尝试简单的分数和浮点逼近非理性的值
Seasonal holiday fractal.
GREETINGS(phi) generates a seasonal holiday fractal that depends upon the parameter phi. The default value of phi is the golden ratio. What happens for other values of phi? Try both simple fractions and floating point approximations to irrational values. (2017-06-20, matlab, 1KB, 下载2次)
[图形图象] knn
knn分类器的设计源程序，经过测试能事功能
knn classifier design source, function tested wiles (2011-04-29, matlab, 1KB, 下载16次)
[图形图象] program
粒子滤波器的仿真程序，有助于您对粒子滤波器有更好的理解。
Particle filter simulation program to help you better understand the particle filter. (2010-04-06, matlab, 116KB, 下载17次)
[图形图象] adaboost
Adaboost训练分类器的源代码，是快速人脸检测的必备。
It is the code for training classifiers by
Adaboost to Face Detection (2010-03-10, matlab, 7188KB, 下载366次)
[图形图象] FIR
用matlab实现FIR滤波器，包括其幅频特性，然后让单位取样函数，周期方波序列和周期三角波序列通过滤波器，验证滤波器的特性
FIR filters using matlab implementation, including its amplitude-frequency characteristics, and then let the unit sample function, sequence and cycle-cycle square wave triangle wave sequence through the filters to verify the characteristics of filter (2009-12-24, matlab, 364KB, 下载93次)
[图形图象] Gabor
gabor滤波器的源码，可以特征处理或者
gabor filter source, you can deal with the characteristics or (2008-12-07, matlab, 2KB, 下载14次)
[图形图象] exp_filter
数字图像指数滤波器低通滤波器，只要修改把大于号改成小于号就可实现高通滤波器
digital image index filter low-pass filter, as long as the changes has been replaced by greater-than, less than can be achieved high pass filter (2007-05-11, matlab, 1KB, 下载49次)