Description: 高频强调滤波，本实验的目的十八高频强调滤波和直方图均衡化结合起来，来区分对图像处理的差别！-High-frequency emphasis filter, the purpose of this study eighteen high-frequency emphasis filter and histogram equalization combined to distinguish the difference of image processing! Platform: |
Size: 9216 |
Author:林彩 |
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Description: 利用高频强调滤波和直方图均衡化对医学图像进行处理-The use of high-frequency emphasis filter and histogram equalization image processing for medical Platform: |
Size: 1024 |
Author:shirley |
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Description: 高频强调滤波和灰度变换进行图像增强：
1. main.m 主程序
2. paddedsize.m 对图像进行补充，以便形成的方形大小等于最小接近的2的整数次幂。
3. dftfilt.m 输入图像f和一个滤波器函数，返回经过滤波和剪切后的图像g。
4. dftuv.m 提供频域坐标网格。
5. lpfilter.m 几种常用的低通滤波器。
6. hpfilter.m 实现高通滤波。
7. BodyImage.JPG 测试用图片
注：
1. 运行程序前，请在main.m中更改读入图片的路径。
2. main.m中的灰度变换部分的代码只适用于上述测试图片。应用于其他图片时，应分析灰度直方图后，对这部分程序进行修改。-High frequency emphasis filter and the gradation conversion for image enhancement: 1. Main.m main 2. Paddedsize.m add the image to the size of the smallest square formed close to an integer power of 2. 3. Dftfilt.m input image f and a filter function that returns the filtered and trimmed image g. 4. Dftuv.m provide frequency domain coordinate grid. 5. Lpfilter.m several commonly used low-pass filter. 6. Hpfilter.m high-pass filter. 7. BodyImage.JPG test image Note: 1. Before running the program, please read the main.m change the image path. 2. Main.m the gradation conversion section of the code is only applicable to the above test images. Analysis should be applied to other image histogram after this part of the program to be modified. Platform: |
Size: 11264 |
Author:穆歌 |
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Description: 此代码是关于高频强调滤波。利用高通滤波器削弱傅里叶变换的低频而保持高频相对不变点，这样会突出图像的边缘和细节，使得图像边缘更加清晰。但是由于高通滤波器偏离了直流分分量，从而把图像的平均值降低到了0,。一种补偿方法是给高通滤波器加上一个偏移量。通过算法达到目的。-High-Frequency Emphasis Filtering.High-pass filers zero out the DC term (the value at the center of a high-pass filter mentioned in our lecture is 0 in the frequency domain), thus reducing the average value of an image to 0. Then we introduce an approach used to compensate for this is to add an offset to a high-pass filter. Platform: |
Size: 121856 |
Author:vina |
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Description: 1、 读取图像A和B，显示这两幅图像，对图像作傅立叶变换，显示频域振幅图像。作傅立叶逆变换，显示图像，看是否与原图像相同。
2、 设计一个简单的巴特沃斯低通滤波器（截止频率自选），对图像A作频域低通滤波，
再作反变换，观察两种不同的截止频率下反变换后的图像与原图像的区别。
3、 设计一个高斯高通滤波器（截止频率自选），对图像B作高频强调滤波，再作反变
换，观察两种不同的截止频率下反变换后的图像与原图像的区别.-1, the read image A and B, show two images, the Fourier transform of the image, display the amplitude of the frequency domain image. Inverse Fourier transform for the display image, to see if the same original image. 2, the design of a simple Butterworth low-pass filter (cutoff frequency selectable), the image A low-pass filter for the frequency domain, and then make the inverse transform, under two different cutoff frequencies observed inverse transform the image and the original image difference. 3, the design of a high-pass Gaussian filter (cutoff frequency optional), the high frequency emphasis filter for the image B, and then make the inverse transform, the difference image and the original image is observed under two different cutoff frequency inverse transformed. Platform: |
Size: 2048 |
Author:weiweizhi |
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Description: 高频强调滤波，可用于图像的增强，去除噪声，改进图像。-High-frequency emphasis filter, can be used for image enhancement and noise removal. Platform: |
Size: 3072 |
Author:吴冬冬 |
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Description: 压缩包内包含两个m文件，一个是直方图均衡化，另一个是频域滤波，即对一幅图像进行低通、高通滤波，并且使用高频强调和直方图均衡相结合的方法增强图像；另外包含了四张测试用的图片。(Compressed packet contains two m files, one is histogram equalization, the other is a low pass filtering in frequency domain, i.e., images of a high pass filter, and methods of using high frequency emphasis and histogram equalization combining image enhancement; also contains four test images.) Platform: |
Size: 97280 |
Author:彷徨程序员 |
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Search - high frequency emphasis filter