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DFT&DCT

于 2021-01-18 发布文件大小:3KB

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下载积分: 1 下载次数: 25

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代码说明：

编程实现二维8*8图像块的DFT，DCT变换输入一副RGB图像，将其转化为YCbCr颜色空间，然后对Y分量做分块DFT变换，保存为灰度图像，统计计算时间编程实现8*8块DCT变换,然后分别显示，当使用64个DCT系数里面的一些系数进行重构，比较其质量；同时熟悉采用FFT来实现DCT变换的思想，并显示2维8*8DCT变换的基函数图像(Programming the DFT, DCT transform of two dimensional 8*8 image block Input a pair of RGB images, transform it into YCbCr color space, then divide the Y component into block DFT transform, save as gray image, and calculate the calculation time The 8*8 block DCT transform is implemented by programming, and then it is shown that when using some coefficients in 64 DCT coefficients, the quality is reconstructed. Meanwhile, the idea of DCT transformation is familiar with FFT, and the base function image of the 2 dimensional 8*8DCT transform is displayed.)

文件列表：

代码
代码\DCT0.m, 151, 2017-12-05
代码\DCT1.m, 891, 2017-12-05
代码\DCT2.m, 321, 2017-12-05
代码\dft1.m, 392, 2017-12-05
代码\fft2.m, 1711, 2017-12-04
代码\lena88.bmp, 246, 2017-12-04
代码\RGB2YCbCr.m, 479, 2017-12-05
代码\RGB2YCbCr_2.m, 316, 2017-12-05
代码\showBase.m, 555, 2017-12-05

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attack
这写程序是对加水印之后图像的攻击，包括加噪声，各种滤波，剪切，压缩攻击和旋转等。(This writing process is a plus watermark image after the attacks, including the increase in noise, various filtering, shear, compression and rotation attacks.)

2007-10-18 18:42:57下载

积分：1
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使用python语言实现多张图像的拼接，并且处理拼接之后的裂缝和黑边。(Use python language to achieve splicing of multiple images, and deal with cracks and black edges after splicing.)

2019-04-02 15:24:23下载

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2020-10-12 23:47:31下载

积分：1
fuliye
说明： 1. 对图像进行傅里叶变换。 2. 根据傅里叶变换的结果去除图像的竖条纹噪声。 3. 对图像进行傅里叶逆变换，得到分割图像。 (1. For the image Fourier transform. 2. According to the results of Fourier transform to remove the image of the vertical stripe noise. 3. Inverse Fourier Transform of the images obtained segmented image.)

2010-03-17 19:30:01下载

积分：1
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2013-08-03 19:39:01下载

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EZW
图像压缩经典EZW算法可提初学者学习参考使用(image compression EZW)

2013-10-12 14:22:16下载

积分：1
1
说明：标定用的c++程序，可以用来标定得到相机的内参矩阵和畸变参数。(Calibration using matlab toolbox, can be used to calibrate the camera s internal control matrix image obtained.)

2015-07-24 16:18:53下载

积分：1
LaplacianPyramid
说明：图像的Laplace金字塔分解与重构算法。(Laplacian pyramid decomposition and reconstruction of image. )

2009-09-01 10:35:08下载

积分：1
contourtrack
说明： matlab边界自动跟踪程序，该程序可以直接运行，涉及边界判别准则和搜索准则。图像要求为二值图像，可输出为边界的点的坐标和轮廓图像。(matlab boundary automatic tracking program can be run directly involving border criteria and search criteria. Image requirements for binary images can be output for the coordinates of border points and the outline of the image.)

2008-11-19 21:27:00下载

积分：1
psnr_nmse_rms
通过matlab编写的几个关于psnr、mse的图像处理的小程序(Through several matlab written on the PSNR, MSE image processing of small procedures psnr_nmse_rms)

2020-11-23 17:39:34下载

积分：1

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