资源列表
FFT
- 图像的DCT（离散余旋）和FFT（傅立叶）变换。-The image DCT (Discrete I spin) and FFT (Fourier) transformation.
wavelet_quality
- Quality estimation in wavelet coding
fft
- 快速Fourier变换的代码，基2算法，且和原始定义的Fourier变换算法进行了对比。-Fast Fourier Transform code, the base 2 algorithm, and the original definition of the Fourier transform algorithm were compared.
wavelets
- 实现离散小波变换和DCT变换的对比，包括去噪，psnr等方面的性能的比较 其中小波变换的介数可以由用户自己定义-Achieve the discrete wavelet transform and DCT transform contrast, including the de-noising, psnr comparison of the performance areas in which the number of wavelet transform can be mediated by
DiscreteWaveletTransform
- 小波轉換(Discrete Wavelet Transform, DWT)，所先對原圖水平做低頻和高頻的 convolution 之後降 頻，再做垂直的低頻和高頻的convolution，最後再降 頻，得到 結果。-Wavelet transform (Discrete Wavelet Transform, DWT), the first level of the Original low-frequency and high frequency of the c
dwtransform
- This program performs Standard and non standard Discrete wavelet transform.
FFT
- 用C＋＋实现的快速傅立叶变换，用起来效果不错-C++ implementation with fast Fourier transform, with good results up
Wavelet_-_A_Tutorial_on_Wavelet
- this is a brief wavelet tutorial by martin j.mohlenkamp
quzao2
- 图像去噪，小波去噪，通过滤掉低频率噪声，来获得较高质量的图像-Image denoising
dwt_src
- dicrete wavelet transform
UltraSound_program
- 超声图像去噪，基于小波变换的通用超声图像去噪，能够有效的去除相干斑-Ultrasound image denoising based on wavelet transform common ultrasound image denoising, can effectively remove speckle
HarmonicAmplitudeOfTheWaveformSynthesis
- 谐波幅度对波形合成的影响 一个幅度为E，脉冲宽度为τ，重复周期为T的矩形脉冲信号，实验内容为用前5项谐波近似合成一方波。先画出基波分量；然后将三次谐波加到基波上，并画出结果；再将一次、三次、五次、七次和九次谐波加在一起；将上述波形分别画在一幅图中，可以看出它们逼近方波的过程。注意“吉布斯现象”。周期信号傅里叶级数在信号的连续点收敛于该信号，在不连续点收敛于信号左右极限的平均值。如果我们用周期信号傅里叶级数的部分和来近似周期信号，在不连续点附近将会出现起伏和超量。在实际中，如果应用这种近似，就