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能量检测法源代码
能量检测法是一种比较简单的信号检测方法[1]， 属于信号的非相干的检测， 直接对时域信号采样值求模，然后平方即可得到；或利用FFT转换到频域，然后对频域信号求模平方也可得到。它无需知道检测信号的任何先验知识，对信号类型也不作限制。
实际上，能量检测是在一定频带范围内作能量积累，如果积累的能量高于一 定的门限，则说明信号的存在；如果低于一定的门限，则说明仅有噪声。能量检 测的出发点是信号加噪声的能量大于噪声的能量。能量检测方法对信号没有作任何假设，是一种盲检算法。
此代码“利用FFT转换到频域，然后对频域信号求模平方”方法来实现对用户的检测。(In fact, energy detection is used for energy accumulation in a certain frequency range. If the accumulated energy is higher than a certain threshold, the existence of the signal is indicated. If the threshold is lower than the threshold, then only noise is indicated. The starting point of energy detection is that the energy of signal plus noise is greater than that of noise. The energy detection method does not make any assumptions about the signal, and it is a blind detection algorithm.
This code "converts the frequency domain into the frequency domain by FFT, then calculates the square of the square of the frequency domain signal" to realize the detection of the user.)
- 2021-04-29 16:18:42下载
- 积分：1
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图像增强
SSR,MSR等不同的图像增强，挺全面的挺好用的。(SSR, MSR and other different image enhancement, quite comprehensive and very good use.)
- 2018-05-20 19:48:53下载
- 积分：1
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基于BP网络的印刷体数字识别
说明： 基于BP网络的印刷体数字识别技术的完整案例，对图像处理及其BP神经网络付有完整的程序，并可以允许，同时还附有大量的测试图片(Digit recognition technology integrity cases, right image processing and neural network BP to pay the full process and allows, but also with a large number of test pictures)
- 2005-12-31 15:22:27下载
- 积分：1
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DCT
解决图像的DCT变换与逆变换，为JEPG压缩做铺垫(To solve the image DCT transform and inverse transform, in order to pave the way for JEPG compression)
- 2009-10-24 18:38:40下载
- 积分：1
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Denoising-Custom-master
说明： 对微震图像进行去燥，利用同步压缩连续小波变换进行自动微震去噪和起始检测。(Denoising the microseismic image,automatic microseismic denoising and onset detection using the synchrosqueezed continuous wavelet transform.)
- 2019-04-17 13:53:11下载
- 积分：1
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频域滤波
说明： 编程实现灰度图像的频域滤波算法。使用Matlab实现不延拓和延拓两个版本。对于延拓和不延拓版本，在理想低通滤波器、巴特沃斯低通滤波器和高斯低通滤波器上比较两者的区别；对于延拓版本，比较不同参数设置对上述三种滤波器滤波结果的影响。(Program to realize the filtering algorithm of gray image in frequency domain. Matlab is used to realize two versions of no extension and extension. For the extension version and the non extension version, the differences between the ideal low-pass filter, Butterworth low-pass filter and Gauss low-pass filter are compared; for the extension version, the effects of different parameter settings on the above three filter results are compared.)
- 2020-12-20 09:49:09下载
- 积分：1
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pingfanggen
说明： 用平方根算法进行矩阵的优化，以便使用卡尔曼滤波获得精确的值(kalman filter and pingfanggen method ，using it can obtain accurate value )
- 2009-08-18 17:12:17下载
- 积分：1
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matlab
用matlab中各种不同方法对模糊图像进行复原，有维纳滤波，盲返卷积，Lucy-richardson方法，规则化复原图像等(Various different methods using matlab fuzzy image restoration, with Wiener filtering, blind convolution back, Lucy-richardson methods, rules-based recovery images, etc.)
- 2010-01-10 14:25:53下载
- 积分：1
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touying
关于图形学的一个算法，主要实现了投影。比较适合初学者(An algorithm on the graphics, the main achievement of the projector. More suitable for beginners)
- 2008-06-24 00:38:00下载
- 积分：1
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yundong-dexiaoqiu
运动的小球、一般本科需要的课后作业设计。有兴趣的可以下载看看(The ball movement, the general undergraduate required homework designs. Interested parties can download and see)
- 2013-12-17 16:59:36下载
- 积分：1
