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Description: 集成了快速算术编码的spiht图像编码算法,我增加了psnr的计算.-the rapid integration of spiht arithmetic coding algorithm for image coding, I increased psnr calculations.
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Size: 321926 |
Author: 肖卫华 |
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Description: purpose
computes PSNR between two raw YUV images
compile
gcc -g -o cmp_yuv cmp_yuv.c -lpgm -lpbm -lm -purpose computes PSNR between two raw YUV i mages compile gcc-g-o cmp_yuv cmp_yuv.c - lpgm - lpbm - lm
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Size: 1297 |
Author: 王国树 |
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Description: 这是本人写的一个把BMP转成YUV420的小程序，YUV的播放还没作完，不过方法很简单-This is the one I was put into YUV420 BMP turn the small program, YUV No player for the End, but is very simple
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Size: 30720 |
Author: 陈中 |
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Description: purpose
computes PSNR between two raw YUV images
compile
gcc -g -o cmp_yuv cmp_yuv.c -lpgm -lpbm -lm -purpose computes PSNR between two raw YUV i mages compile gcc-g-o cmp_yuv cmp_yuv.c- lpgm- lpbm- lm
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Size: 1024 |
Author: 王国树 |
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Description: 对图像进行二维离散小波变换, 变换级数大于等于3级,然后统计系数中0的个数（百分比表示），并进行重构, 最后计算重构图像的峰值信噪比(PSNR).
里面还附上了我写的实验报告，对大家理解Mallat算法和图像压缩很有帮助-Image two-dimensional discrete wavelet transform, transform series greater than or equal to 3, and then statistics of the number of coefficients in 0 (expressed as a percentage), and reconstruction, the final calculation of reconstructed image of the peak signal to noise ratio (PSNR). which also includes the experimental report I wrote to all of us understand the Mallat algorithm and image compression helpful
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Size: 986112 |
Author: zhang |
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Description: 提供PSNR到主观5分MOS模型之间的转换.
输入视频序列，直接提供改视频主观质量的结果，5分为最高满分，1分最低。MOS模型是衡量视频的最流行的方法，改转换模型结合本人论文实验当中的方法得出的。-PSNR provided to a subjective 5 minutes conversion between MOS model. Input video sequence, directly to the results of subjective quality video, divided into 5 the highest score, 1 minute minimum. MOS model is a measure of the video the most popular way to convert the model to the experimental combination of papers which I come to the Ways.
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Size: 8192 |
Author: Freddie |
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Description: ITU于2008年推出的视频质量客观评价标准
其中共推荐4中全参考模型-ITU-T J.247 Objective perceptual multimedia video quality measurement
in the presence of a full reference
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Size: 2728960 |
Author: 冯超 |
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Description: 置乱变换后图像的lsb嵌入，以及提取程序，另外还包含psnr程序，可以与本人上传的dct频域嵌入进行对比-Image scrambling transformation lsb embedding, as well as the extraction procedure, also includes psnr program, can I upload dct compare the frequency domain embedding
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Size: 3072 |
Author: blazer |
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Description: 该目录包含了基于可移植的C语言的数字水印算法的代码。这些代码具有示范
性的意义，且有一定的鲁棒性。
需要安装NetPGM的程序包（用来存取pgm格式图像），然后才能在linux下面编译。
NetPGM是图像文件的输入/输出软件包。可以在网上搜索得到。我们已经对
256灰度级，512×512大小的图像进行了测试。程序编译后的调用格式如下（以encode为例）：
wm_cox_e -s cox.sig -o wm_image.pgm image.pgm
其中，-s表示要添加的水印信号，cox.sig是信号文件。
-o表示输出图像文件名为wm_image.pgm，
image.pgm为输入文件名。
几个辅助程序：
cmp_pgm 计算差分图像，PSNR等
cmp_dct 计算全帧DCT域的差分图像
cmp_dct8x8 计算8×8大小的DCT域差分图像
比如说，为了产生两个PGM图像的差分图像并计算它们的PSNR，命令如下：
cmp_pgm -p -i original.pgm -o diff.pgm watermarked.pgm
产生水印信号：
gen_cox_sig -o cox.sig
程序将产生适合512×512大小，8-bit灰度的pgm图像的水印信号。
水印提取：
wm_cox_d -s cox.sig -i lena.pgm -o cox.wm cox_lena.pgm
请注意，cox的算法需要原始图像做参考来提取水印，压缩后的水印将存储在cox.wm中。-This directory contains the C-based portable digital watermarking algorithm code. The code has a demonstration
Of meaning, and there is a certain degree of robustness.
NetPGM need to install the package (to access the pgm format images), and then to compile in linux below.
NetPGM is the image file input/output package. Can search by. We have already
256 gray level, 512 × 512 size images were tested.
Procedure call format, compiled as follows (in encode an example):
wm_cox_e-s cox.sig-o wm_image.pgm image.pgm
Which,-s that you want to add the watermark signal, cox.sig is the signal file.
-O said output image file name wm_image.pgm,
image.pgm for the input file name.
Several auxiliary programs:
cmp_pgm calculate the difference image, PSNR, etc.
cmp_dct full frame DCT domain calculation of difference image
cmp_dct8x8 calculate the size of 8 × 8 DCT domain differential image
For example, in order to produce two PGM images and calculate their differ
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Size: 19456 |
Author: sylvia |
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Description: 3 图像基本处理操作（图像显示、读写、像素统计处理、图像文件I/O等）
4 图像质量的客观评价（峰值信噪比PSNR及其应用）
5 图像的代数运算（绝对值差函数imabsdiff，叠加函数imadd，图像的旋转imrotate）
6 视频处理（创建AVI视频）
7 图像增强（直方图、直方图均化、均值滤波、中值滤波）
8 图像形态学分析（膨胀、腐蚀、开、闭运算、轮廓提取）
-3 basic image processing operations (image display, read and write, pixel statistics processing, image file I/O, etc.) 4 objective evaluation of image quality (PSNR peak signal to noise ratio and its application) 5 images of algebraic operations (sum of absolute differences function imabsdiff , superimposed function imadd, image rotation imrotate) 6 video processing (creating AVI video) 7 image enhancement (histogram, histogram equalization, mean filtering, median filtering) 8 image morphology analysis (expansion, erosion, opening and closing operations, contour extraction)
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Size: 4096 |
Author: 李辛昭 |
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Description: 图相多描述编码matlab仿真
多描述编码的matlab仿真，本科生的毕业设计
生成图像后计算psnr
> J=imread( 两描述都收到后重建的图像.bmp )
PSNR(I,J)
ans =
32.3290
>> J=imread( 描述1重建后的图像.bmp )
>> PSNR(I,J)
ans =
28.7011
>> J=imread( 描述2重建后的图像.bmp )
>> PSNR(I,J)
ans =
29.1467-Figure phase multiple description coding matlab simulation
Matlab simulation of multiple description coding, undergraduate graduation design
Generated images calculated psnr
>> J = imread ( the reconstructed image after the two descriptions are received. Bmp )
>> PSNR (I, J)
ans =
32.3290
>> J = imread ( to describe a reconstruction of images. Bmp )
>> PSNR (I, J)
ans =
28.7011
>> J = imread ( to describe two reconstruction images. Bmp )
>> PSNR (I, J)
ans =
29.1467
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Size: 3454976 |
Author: zjj |
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Description: function PSNR2 = psnr(I,I_iter)
计算峰值信噪比
I : 原始信号
I_iter : 加噪信号-function PSNR2 = psnr (I, I_iter) calculate the peak signal to noise ratio I: the original signal I_iter: adding noise signal
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Size: 2048 |
Author: alison |
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Description: 本程序采用JPEG算法对静止图像进行编解码，采用Matlab仿真平台。程序的品质因数可以自行调整，并附有性能参数分析（采用PSNR作为评判依据）。这是我研一的课程作业程序，自己写的，希望有需要的同学下载！-This procedure uses the JPEG algorithm for still image coding and decoding, using Matlab simulation platform. Program can adjust the quality factor, together with the performance parameters analyzed (using PSNR as criterions). This is what I study a course work program, write your own, and I hope there is a need for students to download!
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Size: 12288 |
Author: 杨建 |
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Description: I have thoroughly study the basic of image compression techniques. From that I have selected SPIHT algorithm for my research work. I have implemented on image compression for gray images using SPIHT algorithm. Image compression is implemented using this algorithm has better result over the previous result on gray images and also improved PSNR value high but on other side low result on compression ratio.
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Size: 416768 |
Author: shrey211 |
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Description: 很有用的图像去噪效果评价公式，PSNR,MSE，希望对图像处理的同学有帮助-Denoising effect evaluation formulas useful, PSNR, MSE, and I hope to help the students of image processing
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Size: 3072 |
Author: 王帆 |
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Description: this a matlab for the PSNR. In this .m I have been using the PSNR to evluate the quality of the audio quality. Its a very useful way to do it.-this is a matlab for the PSNR. In this .m I have been using the PSNR to evluate the quality of the audio quality. Its a very useful way to do it.
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Size: 537600 |
Author: Danny |
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Description: I have provided the code for watermarking and calculatuin of MSE , PSNr and comparison.
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Size: 145408 |
Author: ur |
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Description: 求取图像得PSNR，卸载可以直接使用，希望可以帮助到需要的同学。-To obtain the image of PSNR, unloading can be used directly, I hope to help students in need.
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Size: 2048 |
Author: licuihua |
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Description: Image / Picture Quality Measures
In this application, different image quality measures are calculated for a distorted image with reference to an original image. To test the application, a set of 20 distorted images i ncluded in this package. The list of Image Quality measures implemented in this package include,
1. Structural Content (SC)
2. Mean Square Error (MSE)
3. Peak Signal to Noise Ratio (PSNR in dB)
4. Normalized Cross-Correlation (NCC)
5. Average Difference (AD)
6. Maximum Difference (MD)
7. Normalized Absolute Error (NAE)
Refer Reference.png for the mathematical expressions implemented in this package.
Original images are kept in the folder OriginalImages .
Distorted images are kept in the folder DistortedImages .
-Image / Picture Quality Measures
In this application, different image quality measures are calculated for a distorted image with reference to an original image. To test the application, a set of 20 distorted images is included in this package. The list of Image Quality measures implemented in this package include,
1. Structural Content (SC)
2. Mean Square Error (MSE)
3. Peak Signal to Noise Ratio (PSNR in dB)
4. Normalized Cross-Correlation (NCC)
5. Average Difference (AD)
6. Maximum Difference (MD)
7. Normalized Absolute Error (NAE)
Refer Reference.png for the mathematical expressions implemented in this package.
Original images are kept in the folder OriginalImages .
Distorted images are kept in the folder DistortedImages .
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Size: 1067008 |
Author: Emad Taha |
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Description: 实现视频压缩的功能，其中包括I帧编码解码，B帧编码解码，还有PSNR的计算(The realization of video compression function, including I-frame encoding and decoding, encoding and decoding of B frame, the calculation of PSNR)
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Size: 6144 |
Author: 木呆困
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