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图像压缩去噪增强锐化程序,供大家参考。 包括: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 采用二维中值滤波函数medfilt2对受椒盐噪声干扰的图像滤波 采用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 利用巴特沃斯(Butterworth)低通滤波器对受噪声干扰的图像进行平滑处理 利用巴特沃斯(Butterworth)高通滤波器对图
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该程序利用Matlab编写,并带有GUI截面。实现了任意格式图像压缩的功能。并且可以对比显示压缩前后图像,显示压缩比例和压缩时间。-The program prepared by the use of Matlab, and with a GUI cross-section. Image compression format to achieve an arbitrary function. Compared before and after the show and can compress
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Image Compression using Artificial Neural Networks
This code is developed in MATLAB 6.5 and can used in Windows platform. Program contain all necessary files. For training the network use Train.m and Codec.m compress images by trained network.
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使用小波技术对图像进行压缩和解压过程,并且通过模拟信道测试计算其PSNR,通过Matlab2009a测试。-Using wavelet methods compress and decompress the image, and testing through analog channels to calculate the PSNR, by Matlab2009a test.
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this code is matlab and compress image by ann.
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(1)试利用函数dct2,对该图像进行压缩。压缩时可尝试对DCT 变换后的系数采用不同取舍方法,比较其压缩性能。(函数dct2在matlab本身是有的,可以help dct2看看)
(2)结合课本例8.7.2 的量化方法,对每一个经DCT变换后的8×8 矩阵量化(Huffman编码部分可省略),从而实现图像压缩。在一定压缩比的情况下,和⑴给出的图像质量相比较。
(3)用所给的子子程序fast_LOT.m 实现对该图像的变换与压缩,并和(1)得出的图像质量相比较-(1) Test usin
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image compressiom and analysis,At first,compress a picture and then analyze the result by using MATLAB.-image compressiom and analysis,At first,compress a picture and then analyze the result by using MATLAB.
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Image Compression by:
1) Use Adobe Photoshop to Compress images using LZW algorithm (i.e. lossless technique).
2) Use MATLAB to Compress images using JPEG algorithm (i.e. lossy technique) and Assess objectively the quality of the compressed
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code source compression image using Haar wavelet
By Arash Fattahi, Omid Aladini {r_ash,omid}@cs.sharif.edu
To compress an image use this command in MATLAB:
haar_compression(FILE_NAME,COMP_LEVEL,MOSAIC_SIZE)
example:
haar_compres
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