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数字图像矩阵数据的显示及其傅立叶变换
二维离散余弦变换的图像压缩
采用灰度变换的方法增强图像的对比度
直方图均匀化
模拟图像受高斯白噪声和椒盐噪声的影响
采用二维中值滤波函数medfilt2对受椒盐噪声干扰的图像滤波
用MATLAB中的函数filter2对受噪声干扰的图像进行均值滤波
图像的自适应魏纳滤波
运用5种不同的梯度增强法进行图像锐化
图像的高通滤波和掩模处理
用巴特沃斯(Butterwo
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小波软阈值去噪soft harr.rar 将文件所在目录设为工作目录,然后打开wavlet.fig,在noise提示框下输入噪声强度,在0-0.1之间(不能为零)。然后点process按钮,就会显示实验结果,包括原图像,加噪图像,去噪图像的对比以及当前的psnr值。 wavlet.m是程序文件。-wavelet soft thresholding soft harr.rar file directory as the working directory. wavlet.fig then open
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小波软阈值去噪soft harr.rar 小波软阈值去噪soft harr.rar 将文件所在目录设为工作目录,然后打开wavlet.fig,在noise提示框下输入噪声强度,在0-0.1之间(不能为零)。然后点process按钮,就会显示实验结果,包括原图像,加噪图像,去噪图像的对比以及当前的psnr值。 wavlet.m是程序文件。-wavelet soft thresholding wavelet soft harr.rar soft thresholding soft harr.r ar
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anisodiff.m Function to perform anisotropic diffusion of an image following Perona and Malik s algorithm. This process smoothes regions while preserving, and enhancing, the contrast at sharp intensity gradients
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anisodiff.m Function to perform anisotropic diffusion of an image following Perona and Malik s algorithm. This process smoothes regions while preserving, and enhancing, the contrast at sharp intensity gradients.
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Perona和Malik在热传导方程的基础上,建立了各向异性扩散方程并将其应用到了图像处理中尺度空间的图像平滑上,该模型针对图像的边缘部分和非边缘部分进行不同性质的图像处理,同时解算方程的迭代格式简单,克服传统滤波的主要缺陷,是图像质量大为改善,为图像的边缘检测和增强开辟了新的方向。-This process smoothes regions while preserving, and enhancing, the contrast at sharp intensity gradients.
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Perona和Malik在热传导方程的基础上,建立了各向异性扩散方程并将其应用到了图像处理中尺度空间的图像平滑上,该模型针对图像的边缘部分和非边缘部分进行不同性质的图像处理,同时解算方程的迭代格式简单,克服传统滤波的主要缺陷,是图像质量大为改善,为图像的边缘检测和增强开辟了新的方向。-This process smoothes regions while preserving, and enhancing, the contrast at sharp intensity gradients.
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For images with color, it seems obvious that an additional term must be added to consider the difference between the color of the background and the color of the target. In other words, if at present the contrast between the target and the background
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code produce twomodegassian distribution for intensity level which suitable for contrast inhancement
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图像邻域处理,能进行高斯转换,对比度变化,灰度变化,和各种转换-Neighborhood image processing, can be Gaussian conversion, contrast change, intensity change, and a variety of conversion
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基于小波变换的图像去噪的matlab程序
程序使用说明:
1、软件应用平台:Matlab6.5或更高;
2、打开方法:
将文件所在目录设为工作目录,然后打开wavlet.fig,在noise提示框下输入噪声强度,在0-0.1之间(不能为零)。
然后点process按钮,就会显示实验结果,包括原图像,加噪图像,去噪图像的对比以及当前的psnr值。
wavlet.m是程序文件。
程序内容写在在程序的注释里。
阈值的更改没有实现可视化,在源程序中可以改。-Image d
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this contains m files for image mainpulation like contrast stretching,bit-plane slicing,image negative,directional smoothing and intensity increase.It uses user defined function for laplacian edge calculation and convolution.
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AM MODULATION: It is matlab code for AM,DSBSC,SS B with carrier ,ISB, & multitone AM & their spectrum. AM is a technique used in electronic communication, most commonly for transmitting information via a radio carrier wave. AM works by varying the st
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Contrast Enhancement Using Dominant Brightness
Level Analysis and Adaptive Intensity
Transformation for Remote Sensing Images
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鉴于棋盘格图案在摄像机标定中有着广泛的应用,因此为了对边缘模糊的棋盘格图像进行在线标定,针
对目前棋盘格图像角点检测算法的局限性,提出了一种可以自动实现的棋盘格图像角点检测算法, 该算法是利用
周围图案对称和灰度值对比明显的独特性质,设计了由对称算子S和方差算子V组合而成的角点检测算子) )) 对
称方差算子( symmetry andvariance), 简称SV算子。该算子不仅构思巧妙、易于实现、计算量小,而且对棋盘格图像
的旋转变换和亮度变换具有鲁棒性和抗噪能力强的优点。实
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This method usually increases the global contrast of many images, especially when the usable data of the image is represented by close contrast values. Through this adjustment, the intensities can be better distributed on the histogram. This allows f
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调节显示器亮度: 通过VC程序实现了显示器的亮度对比度调节,通过不同的OPENCV函数调用展示了底层开发的基本技术。-Light Intensity Configuration: Based on VC++, codes realize the adaptive configuration of monitor s light intensity and contrast ratio. By the use of different OPENCV functions, codes show th
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Gamma_Manager_Demo: 实现了利用Gamma改变屏幕亮度值以及对比度的程序。通过不同的OPENCV函数调用展示了底层开发的基本技术。-Gamma_Manager_Demo: Codes realize the control of monitor light intensity and contrast ratio based on Gamma. By the use of different OPENCV functions, codes show the basic tech
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直方图均衡:增强图像的对比度,使暗的部分变亮,亮的的部分变暗,对光照强时具有较强的鲁棒性-Histogram equalization: to enhance image contrast, the dark parts brighter and dark parts brighter on light intensity, have a robust
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Intensity Transformation of “Lena.bmp”
- Contrast enhancement
- Threshold enhancement
- Negative enhancement
-Intensity Transformation of “Lena.bmp”
- Contrast enhancement
- Threshold enhancement
- Negative enhancement
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