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Description: 几个关于图像质量评价的函数。包括psnr峰值信噪比，均方误差rms，正则均方误差nmse等。可用于去噪图像和压缩图像的质量评价-several image quality evaluation of the function. Including psnr PSNR, mean square error rms, it is mean-square error nmse other. Images can be used for de-noising and compression of image quality evaluation
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Size: 2048 |
Author: 王晓甜 |
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Description: 此程序用于返回图象变换前后的信噪比,只需简单输入图象名,即可返回结果-This procedure for the return of the signal to noise ratio images before and after transformation, you simply enter the image name, to return to the results of
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Size: 2048 |
Author: 过容 |
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Description: This program compress and recostruct using wavelets. We can select level of decomposition(here maximum 4 levels are given) of images using selected wavelet.
For eg:-wavelets can be haar, db1, db2,dmey...............
Decomposition can be viewed in figure.
(Please note that select 256X256 image for better result.)
Then compression can performed,
PERFL2 give compression score.
Then reconstruction can be performed.
Each decompsition we can choose different threshold values.
For each threshold value we can calculate mse,psnr,pq(picture quality),
bit ratio etc. To get pq install pqs function . -This program compress and recostruct using wavelets. We can select level of decomposition (here maximum 4 levels are given) of images using selected wavelet.For eg:-wavelets can be haar, db1, db2, dmey ........ ....... Decomposition can be viewed in figure. (Please note that select 256X256 image for better result.) Then compression can performed, PERFL2 give compression score.Then reconstruction can be performed.Each decompsition we can choose different threshold values . For each threshold value we can calculate mse, psnr, pq (picture quality), bit ratio etc. To get pq install pqs function.
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Size: 3072 |
Author: 陈语恬 |
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Description: 一个计算2副图像之间的峰值信噪比（PSNR）的matlab程序。-A calculation between two images of the peak signal to noise ratio (PSNR) of the matlab program.
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Size: 30720 |
Author: chenkaizhi |
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Description: 这个是一个获取两个图像相似度的函数，对于图像处理和数字水印方面的编程者来说，会经常去计算两个图像的psnr值，从而来确定图像的相似度，使用matlab可以很方便的计算两个图像的psnr，但是由于matlab专业性很强，而且有没有版权保护，所以对于大批的使用VC语言的这方面的编程者，由于要经常使用而显得很麻烦。
通过调用get_psnr函数可以很方便的就得到两个图像的相似度。
-This is a similarity to obtain a function of two images for image processing and programming aspects of digital watermarking are concerned, will keep the two images to calculate the PSNR value, thereby to determine the similarity of images, the use of matlab can be easily the calculation of the two images psnr, but because matlab highly professional, and has no copyright protection, and therefore the use of a large number of VC language programming in this area, and due to frequent use, there appears to be very troublesome. Get_psnr by calling the function can be easily obtained from the two images on the similarity.
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Size: 1024 |
Author: 莫雨 |
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Description: 求图像峰值信噪比，可以用于图像质量的评估。-Peak signal to noise ratio for images that can be used for image quality assessment.
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Size: 1024 |
Author: 刘坤 |
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Description: 计算两幅图像的SNR信噪比的源代码MATLAB版-Calculation of two images PSNR peak signal to noise ratio of the source code version of MATLAB
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Size: 3072 |
Author: 宁菲菲 |
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Description: 两个图像质量评价函数，psnr峰值信噪比，正则均方误差nmse，能可用于去噪图像和压缩图像的质量评价，很有用啊。-Two image quality evaluation of the function. Including psnr PSNR, it is mean-square error nmse other. Images can be used for de-noising and compression of image quality evaluation.
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Size: 1024 |
Author: sanmu |
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Description: 计算峰值信噪比,可以用于检查图像密写的效果-Calculation of peak signal to noise ratio, images can be used to check the effect of Steganography
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Size: 1024 |
Author: leiyu |
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Description: 利用霍夫曼编码算法对数字图像进行压缩及解压缩处理，解压出来的图像与源图像几乎完全一致，峰值信噪比为无穷大-The use of Huffman coding algorithm for digital image compression and decompression processing, extracting images from the source image is almost exactly the same infinite PSNR
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Size: 168960 |
Author: tianjieyu |
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Description: 本程序功能是计算2幅彩色图像的PSNR,以此来评价图像处理的效果-This program features the calculation of two color images of the PSNR, in order to assess the effect of image processing
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Size: 2048 |
Author: 陈增境 |
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Description: Block Matching Algorithms for Motion Estimation
This project contains the project report and source code by Aroh Barjatya for Digital Image Processing Class at Utah State University.
Following is a short description of the m files in this zip
motionsEstAnalysis.m Script to execute all Algorithms
motionEstES.m Exhaustive Search Algorithm
motionEstTSS.m Three Step Search Algorithm
motionEstNTSS.m New Three Step Search Algorithm
motionEstSESTSS.m Simple And Efficient Search Algorithm
motionEst4SS.m Four Step Search Algorithm
motionEstDS.m Diamond Search Algorithm
motionEstARPSm Adaptive Root Pattern Search Algorithm
costFuncMAD.m Mean Absolute Difference Function
minCost.m minimum cost among macro blocks
motionComp.m motion compensated image creator
imgPSNR.m finds image PSNR w.r.t. reference image
The test images can be found at http://cc.usu.edu/~arohb/caltrain.zip-Block Matching Algorithms for Motion Estimation
This project contains the project report and source code by Aroh Barjatya for Digital Image Processing Class at Utah State University.
Following is a short description of the m files in this zip
motionsEstAnalysis.m Script to execute all Algorithms
motionEstES.m Exhaustive Search Algorithm
motionEstTSS.m Three Step Search Algorithm
motionEstNTSS.m New Three Step Search Algorithm
motionEstSESTSS.m Simple And Efficient Search Algorithm
motionEst4SS.m Four Step Search Algorithm
motionEstDS.m Diamond Search Algorithm
motionEstARPSm Adaptive Root Pattern Search Algorithm
costFuncMAD.m Mean Absolute Difference Function
minCost.m minimum cost among macro blocks
motionComp.m motion compensated image creator
imgPSNR.m finds image PSNR w.r.t. reference image
The test images can be found at http://cc.usu.edu/~arohb/caltrain.zip
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Size: 118784 |
Author: Yashil |
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Description: 计算GIF彩色图像的差异，两幅图像大小一致且调色板一致。其中Psnr 为两幅图像的psnr值.P 为两幅图像之间像素索引不同的索引值占图像大小的比例。-GIF image color difference calculation, the two images the same size and same color palette. One Psnr the two images psnr value. P index for the pixels between two images, the index values of different ratio of total image size.
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Size: 1024 |
Author: liuq |
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Description: 求解两幅压缩前后图片A和B之间的峰值信噪比-To find the PSNR (peak signal-to-noise ratio) between two intensity images A and B, each having values in the interval[0,1]. The answer is in decibels (dB).
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Size: 1024 |
Author: zhaocong |
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Description: main executing reference usage: observeWaveletDecompositionBenchmark_N_levels.m
The objective is to illustrate wavelet decomposition, and to describe how operations may be done in the wavelet domain before the reconstruction. The demo decouples the wavelet operations (transform, operation in wavelet domain, and reconstruction) from the plotting.
A PSNR and MSE describes the possible distortion (however minimal) of the forward and inverse wavelet transform.
* Caveat: The image display may be subjected to the selected target image. The objective is to provide a simple framework for the understanding of working with wavelets.
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Size: 210944 |
Author: elfrania |
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Description: Calculate PSNR for digital images
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Size: 2048 |
Author: Artem |
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Description: 利用这个软件可以计算图像的PSNR与SSIM，对于做图像以及视频的人还是有用武之地的-Use of this software can calculate the image PSNR and SSIM, images and video for people who do still have its uses in
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Size: 222208 |
Author: 谢晋 |
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Description: 运用matlab对图像进行放大：像素复制法和双线性插值法。像素复制方法的图像缩放的原理主要是对原来输入图像的整行或是整列像素进行简单的复制与删除，达到改变图像大小的目的。双线性插值放大算法中，目标图像中新创造的象素值，是由原图像位置在它附近的小区域象素的值通过加权平均计算得出的。-Write MATLAB function to zoom a grayscale image from original size to the given output
size through two different methods: a) pixel repetition and b) bilinear interpolation.
Zoom the images processed in the Task 2 back to the original size using above mentioned
methods.
Calculate MSE and PSNR for the original and zoomed images using MATLAB methods
written for the Task 1. Plot the MSE and PSNR as function of the size reduction ratio
respectively.
Define what combination of shrink/zoom methods provides the minimal MSE and maximal
PSNR for the same size reduction ratio.
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Size: 5120 |
Author: 宁可 |
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Description: to calculate psnr for images by matlab
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Size: 237568 |
Author: ronik |
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Description: Implementation of psnr for different images in matlab
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Size: 36864 |
Author: irfan khan |
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