Description: dct频域进行图像缩放的源码，非常有用。可以很快的进行图像缩放，免去了DECODE再插值。-DCT frequency domain image scaling for the source, very useful. Can be quickly carried out the image scaling, which eliminates the re-interpolation Decode. Platform: |
Size: 8192 |
Author:sjtuzyk |
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Description: 条带噪声是影响影像质量和反演精度的重要因子，有些在频率域表现为高频信息和低频信息相混合。用邻域插值法，编程实现自动定位噪声行，进行插值处理，取得了较好的去噪效果，并保留了影像的细部特征。-Band noise is the impact of image quality and accuracy of inversion an important factor, some in the frequency domain performance for the high-frequency information and low-frequency information mixed. Neighbor interpolation method used, the programming for automatic positioning noise line interpolation to deal with, and achieved better denoising effect, and retains the characteristics of image detail. Platform: |
Size: 1438720 |
Author:黄源 |
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Description: 用来对2维信号的频域进行sinc插值处理，以放大图像。插值的结果较为理想-Used for 2-D frequency domain signal processing to sinc interpolation in order to enlarge the image. Interpolation more satisfactory results Platform: |
Size: 1024 |
Author:xiaozhi |
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Description: 把一个256*256的图像分成8*8小块，然后进行DFT变换，分别比较在空间域和频域内对图像进行二次抽样和差值最后得出的图像比较-1. Get a grey level image which size is N*N. (For example, 256*256, however,
N = ), and partition to 8*8 sub images.
2. Apply DFT to these sub images, and get the fourier transformed image F.
3. Derive the proper subsampling function matrix S in spatial domain.
4. Multiplying proper 4*4 DFT matrix T to matrix S, derive the frequency version
of subsampling function matrix, S.
5. Similarly, derive the frequency version of interpolation matrix, I.
6. Apply these matrices to each sub image of F (which is DFT of original image),
and get the final image, taking inverse DFT.
7. Apply subsampling/interpolation function matrix S/I to original image in spatial
domain and get the final image.
8. Compare the results from 6, 7.
Platform: |
Size: 2048 |
Author:zhengyan |
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Description: 将一幅256*256的图像分成8*8的小块，对其进行DFT变换。分别比较在空间域和频域内对源图像进行二次抽样和差值最后比较不同-1. Get a grey level image which size is N*N. (For example, 256*256, however,
N = ), and partition to 8*8 sub images.
2. Apply DFT to these sub images, and get the fourier transformed image F.
3. Derive the proper subsampling function matrix S in spatial domain.
4. Multiplying proper 4*4 DFT matrix T to matrix S, derive the frequency version
of subsampling function matrix, S.
5. Similarly, derive the frequency version of interpolation matrix, I.
6. Apply these matrices to each sub image of F (which is DFT of original image),
and get the final image, taking inverse DFT.
7. Apply subsampling/interpolation function matrix S/I to original image in spatial
domain and get the final image.
8. Compare the results from 6, 7.
Platform: |
Size: 2048 |
Author:zhengyan |
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Description: 这个是C制作的源代码。。。
对一幅图像进行DFT变换，分别对源图像在空间域和频域里进行二次抽样和差值，最后得出结果比较。- Get a grey level image which size is N*N. (For example, 256*256, however,
N = ), and partition to 8*8 sub images.
Apply DFT to these sub images, and get the fourier transformed image F.
3. Derive the proper subsampling function matrix S in spatial domain.
4. Multiplying proper 4*4 DFT matrix T to matrix S, derive the frequency version
of subsampling function matrix, S.
5. Similarly, derive the frequency version of interpolation matrix, I.
6. Apply these matrices to each sub image of F (which is DFT of original image),
and get the final image, taking inverse DFT.
7. Apply subsampling/interpolation function matrix S/I to original image in spatial
domain and get the final image.
Platform: |
Size: 2048 |
Author:zhengyan |
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Description: 通过频域变换的方法实现图像的放大，该代码是实现对4:2:0YUV视频序列的放大，相对于普通的插值算法有较好的效果。-By frequency-domain transform method for image magnification, the code is to achieve the 4:2:0 YUV video sequence amplification, relative to the general interpolation algorithm has a good effect. Platform: |
Size: 2048 |
Author:Dean |
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Description: 使用双线性插值的图像旋转，和本站的其余旋转不同，我的旋转不会使图像缺角，好处就是旋转后他的傅里叶变换的频域图也旋转同样的角度，同样可以用来处理矩阵，来做滤波器，我在做方向滤波器，有兴趣要的可以m我。-Using bilinear interpolation, image rotation, and the rest of the rotation is the rotation does not make the image Cutaway, the advantage is that the rotation after his Fourier transform frequency domain also rotates the same angle, can also be used to handle the matrix, do the filter, I was doing directional filter, interested to m. Platform: |
Size: 1024 |
Author:陈雨露 |
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Description: 数字图像处理matlab实现，包括如下程序：
1.直方图规定化为高斯双峰函数
2.窗口形状自适应（十字形或矩形）的中值滤波
3.彩色图像目标提取并与背景图像合成
4.插值外推法的彩色图像饱和度调整
5.多种插值方法实现的图像放大和缩小
6.频域变换及分析
7.几何校正
8.插值外推法的黑白图像对比度增强
9.运动模糊矫正-Digital image processing matlab realize, including the following procedures: (1) the bimodal histogram specification as a function of two Gaussian shape adaptive window (cross or rectangular) median filtering three color image with the background object extraction and image synthesis 4. Color image interpolation extrapolation saturation adjustment 5. various interpolation methods to achieve images zoom in and out 6. frequency domain transformation and analysis 7. geometric correction 8. interpolation extrapolation of the black and white image contrast enhancement 9. motion blur correction Platform: |
Size: 7168 |
Author:Yan |
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Description: 包含了阵列信号处理的常见算法，插值与拟合，解方程，数据分析，粒子图像分割及匹配均为自行编制的子例程，加入重复控制，使用起来非常方便，分析了该信号的时域、频域、倒谱，循环谱等。
- Contains a common array signal processing algorithm, Interpolation and fitting, solution of equations, data analysis, Particle image segmentation and matching subroutines themselves are prepared, Join repetitive control, Very convenient to use, Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc.
Platform: |
Size: 5120 |
Author:xuhnup |
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Description: 函数可以作出时域波形图和频域频谱图，并且计算基因频率自动判断音频文件是男声还是女声声音。ds函数输入变量是文件名和降采样的间隔，通过插值的办法保证了原信号的长度，可以画出时域及频域图像，并且判断男女声，最后播放降采样之后的声音-The function can make time-domain waveform and frequency spectrum, and calculate the gene frequency automatically determine the audio file is male or female voice.Ds function of the input variable is interval file name and down sampling, by interpolation approach to ensure that the original signal length, can draw the time domain and frequency domain of image and sound judgment, men and women, last played down after sampling the sound Platform: |
Size: 2048 |
Author:dehenbo |
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Search - image interpolation frequency domain