Description: 平滑滤波 一般来说，图像的能量主要集中在其低频部分，噪声所在的频段主要在高频段，同时系统中所要提取的汽车边缘信息也主要集中在其高频部分，因此，如何去掉高频干扰又同时保持边缘信息，是我们研究的内容。为了去除噪声，有必要对图像进行平滑，可以采用低通滤波的方法去除高频干扰。图像平滑包括空域法和频域法两大类，在空域法中，图像平滑的常用方法是采用均值滤波或中值滤波，对于均值滤波，它是用一个有奇数点的滑动窗口在图像上滑动，将窗口中心点对应的图像像素点的灰度值用窗口内的各个点的灰度值的平均值代替，如果滑动窗口规定了在取均值过程中窗口各个像素点所占的权重，也就是各个像素点的系数，这时候就称为加权均值滤波；对于中值滤波，对应的像素点的灰度值用窗口内的中间值代替。实现均值或中值滤波时，为了简便编程工作，可以定义一个n*n的模板数组。另外，读者需要注意一点，在用窗口扫描图像过程中，对于图像的四个边缘的像素点，可以不处理；也可以用灰度值为"0"的像素点扩展图像的边缘。下面给出了采用加权均值滤波的图像平滑函数代码和效果图：-smoothing filter general, the image of energy is mainly focused on the low-frequency part of the noise lies mainly in the high-frequency band, which system to extract the vehicle Edge Information has been concentrated in some of its high frequency, therefore, how to remove high-frequency interference at the same time, maintain the edge information, we Institute enforcement of the content. In order to remove noise, it is necessary for smooth images can be used to the low-pass filter to remove high-frequency interference. Image Smoothing including airspace and frequency domain method two categories, in the airspace law, the common image smoothing method is used Mean Median filter or filter for filtering mean, it is an odd point in the sliding window on the sliding images of the corresponding Platform: |
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Author: |
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Description: 高斯平滑滤波,可以用与图形及型号处理计算-Gaussian smoothing filter can be used with graphics and models to handle calculation Platform: |
Size: 135168 |
Author:奇闻 |
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Description: 高斯滤波器是一个平滑化滤波器，平滑化程度是由标准差σ来控制，σ值越大，平滑程度越高，相对的，影像越模糊。-Gaussian filter is a smoothing filter, the degree of smoothing is to control the standard deviation Platform: |
Size: 14190592 |
Author:郭媛媛 |
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Description: GUI界面，能方便的对图像进行灰度变换、直方图均衡、增大及缩小分辨率、不同模板数的高斯平滑滤波器和加权平滑滤波器等
-GUI interface, can make it easier for the gray-scale transformation of the image, histogram equalization, increase and reduce the resolution, the number of different templates Gaussian smoothing filter and the weighted smoothing filters, etc. Platform: |
Size: 804864 |
Author:王勇 |
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Description: 关于matlab图象处理的直方图均衡化，理想平滑滤波器和中值滤波去除椒盐噪声的源代码，比较简洁，不妨-Matlab image processing on the histogram equalization, an ideal smoothing filter and median filter to remove salt and pepper noise of the source code, comparing simple, may wish to Platform: |
Size: 3072 |
Author:hbch |
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Description: 一个简单的高斯平滑滤波的MATLAB程序
可以用于初学者学习-A simple Gaussian smoothing filter can be used in the MATLAB program for beginners to learn Platform: |
Size: 246784 |
Author:邱 |
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Description: 其片内设有时钟振荡器、128K字节EZPROM(电可编程可擦除只读存贮器)、低噪前置放大器、自动增益控制电路、反混叠滤波器、平滑滤波器、模拟转发器、差动功率放大器等高品质语音录放系统所需的全部基本功能电路。-There are chip clock oscillator, 128K bytes EZPROM (electrical erasable programmable read-only memory), low-noise pre-amplifier, AGC circuit, anti-aliasing filter, smoothing filter, analog transponders, differential power amplifier system such as the quality of voice recording and all the basic functions of the circuit. Platform: |
Size: 69632 |
Author:13 |
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Description: 高斯平滑滤波器的Matlab实现，实现对一副图像的滤波处理，并把用自己滤波器进行滤波的实验结果与用Matlab函数进行滤波的结果进行比较。
-Matlab Gaussian smoothing filter to achieve, to achieve an image processing filter, and filter their own filtering of the experimental results with the use of Matlab functions to compare the results of filtering. Platform: |
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Author:amy |
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Description: 对图像进行处理前需要先进行平滑处理，滤除噪声的影响，该代码实现低通滤波，对图像进行平滑处理-Pre-processing of images need to go through smoothing filter out the effects of noise, the code to achieve low-pass filtering, image smoothing Platform: |
Size: 269312 |
Author:tom |
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Description: bilateral filter. 能夠完整保留邊界資訊而不被模糊-A bilateral filter is an edge-preserving smoothing filter. Whereas many filters are convolutions in the image domain, a bilateral filter also operates in the image s range—pixel values. Rather than simply replace a pixel s value with a weighted average of its neighbors, as for instance the Gaussian filter does, The bilateral filter replaces pixel s value by a weighted average of its neighbors in both space and intensity. This preserves sharp edges by systematically excluding pixels across the discontinuity from consideration.
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Author:ohrebound |
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Description: Canny 算子 是一个具有滤波、增强和检测的多阶段的优化算子。在进行处理前，Canny
算子先利用高斯平滑滤波器来平滑图像以除去噪声( 即用高斯平滑滤波器与图像作卷积) 。-Canny operator is a filtering, enhancement and optimization of multi-stage detection operator. Before treatment, Canny operator first use Gaussian smoothing filter to smooth the image to remove noise (ie with a Gaussian smoothing filter with the image as a convolution.) Platform: |
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Author:邓 |
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Description: 1. 用imoise()函数给一幅数字图像加入’salt & pepper’和’Gaussian’噪声2）用3x3,5x5邻域平均平滑对图像进行处理3）用3x3,5x5中值滤波对图像进行处理，
2. 对一幅数字图像采用理想低通、Butterworth低通 、Gaussian低通滤波器进行平滑；对一幅数字图像采用理想高通、Butterworth高通 、Gaussian高通滤波器进行平滑。-1. With imoise () function to a digital image by adding ' salt & pepper' and ' Gaussian' noise 2) 3x3, 5x5 neighborhood average smoothing of the image processing 3) 3x3, 5x5 median filter for image processing , 2. on a digital image with an ideal low-pass, Butterworth low-pass, Gaussian smoothing low pass filter on a digital image using the ideal high-pass, Butterworth high-pass, Gaussian smoothing high-pass filter. Platform: |
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Author:toilet |
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