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【Special Effects】 Vectorization-and-Edgereserved-Quantization-of-Ima DL : 0: 本文通过对JPEG图象压缩标准的分析，找到了一种解决这一问题的方法，即保边缘图象量化方法。在JPEG量化前，通过分析判断这一图象块是否为边缘所在块，对于边缘所在块采用较细的量化步长；对于其他块可使用较粗或者原始的量化步长进行量化，这样便可改善图象边缘处的质量。文中是利用了DCT 变换后的直流系数DC值来确定图象边缘块的，因为直流系数为这一图象块的平均亮度，如果相邻块的DC值变化较大，则它所包括的边缘细节就较多，否则说明这一图象块变化平缓，包含边缘少。根据DC值的变化我们可以大致决定这一块的量化因子，然后在量化时将边缘块进行较细的量化就可以很好的保护边缘，达到保边缘的目的。实验结果表明，与标准JPEG量化相比，采用本文方法进行量化可以提高图象峰值信噪比（PSNR）至少1～3dB，图象质量提高效果比较明显。
Update : 2024-05-22 Size : 795648 Publisher : 贾殿鑫
【Special Effects】 wave_and_contourlet_denoise DL : 1: 运用contourlet变换和小波变换对图像进行去噪处理,并将二者的去噪效果通过PSNR进行对比.文中包含去噪.m文件和求PSNR的.m文件.程序中注释详细,值得参考.通过测试的代码.-Use Contourlet transform and wavelet transform for image denoising treatment, and the denoising effect of the adoption of both PSNR comparison. Paper contains denoising. M documents and PSNR for the. M file. Program notes in detail, it is also useful. Through test code.
Update : 2024-05-22 Size : 171008 Publisher : chy
【Special Effects】 imagezoomin DL : 0: 一种基于子块加权的改进图像缩小算法，包括了与传统算法的PSNR对比-Based on the weighted sub-block to improve the image of the narrowing algorithm, including the traditional algorithm with PSNR comparison
Update : 2024-05-22 Size : 295936 Publisher : zhaoqingtian
【Graph program】 wmark DL : 0: 将动画图象类型转化为YUv型，并检测图像的 psnr-Animated images will be converted to the type of YUV type, and detect images PSNR
Update : 2024-05-22 Size : 24576 Publisher : yang
【Special Effects】 PSNR_COMPU DL : 0: matlab输入两幅图像，最直接简单地计算图像psnr，高手者请跳过-matlab input two images, the most straightforward to calculate the image psnr, you are invited to skip
Update : 2024-05-22 Size : 1024 Publisher : 辛月
【Wavelet】 JPEG2000_9_7_002.pdf DL : 0: 基于实数的二进制表示法，把CDF(Cohen，Daubechies and Feauveau)9／7双正交小波基的提升系数化为二进制，采用简单的移位一加操作代替结构复杂的浮点乘法器，从而实现了JPEG2000中9／7离散小波变换的定点计算．相对于浮点计算法，移位一加操作最大的优点是计算简单，特别易于超大规模集成电路实现，因而使硬件实时处理图像信号成为可能．实验仿真结果表明：在低压缩比的情况下，用移位一加操作重构的图像，其峰值信噪比(PSNR)只比浮点法低0．10 dB，当压缩比增大时，其PSNR值略好于浮点法．关键词：离散小波变换；定点计算；浮点计算法；提升；移位一加操作-Based on the real number of binary notation, the CDF (Cohen, Daubechies and Feauveau) 9/7 Biorthogonal wavelet enhancement factor into the binary, using a simple shift operation in place of one plus the complex structure of floating-point multiplier, in order to achieve the JPEG2000 9/7 discrete wavelet transform the fixed-point calculation. Compared with the floating-point calculations, shift operation of one plus the biggest advantages is the calculation is simple, especially vulnerable to the realization of ultra-large-scale integrated circuits, making real-time image processing hardware signal possible
Update : 2024-05-22 Size : 226304 Publisher : H Simon
【Special Effects】 PSNR_MOS DL : 0: 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.
Update : 2024-05-22 Size : 8192 Publisher : Freddie
【Program doc】 DC-SA-DCT2 DL : 0: 校正任意形状DCT变换的矩阵不归一化，PSNR提高，基本是最佳校正方法-Calibration of arbitrary shape DCT transform matrix is not normalized, PSNR improve, the basic is the best correction method
Update : 2024-05-22 Size : 126976 Publisher : linzhang
【matlab】 LSB DL : 0: 利用LSB算法去实现了电子水印技术。代码完全实现了嵌入以及提取，算法同时包含了4种攻击算法以及利用psnr测量提取的水印和攻击后提取的水印-This algorithm describes digital watermark technique by using LSB. This code implement embedding and extraction. At the meanwhile, this algorithm includes 4 different kinds of attacks and in the end, measure psnr between extracted watermark and attacked extracted watermark
Update : 2024-05-22 Size : 2048 Publisher : 宋春霖
【Special Effects】 200090401 DL : 0: 这个是我本人整理的求PSNR的通用程序，是可以用的-This is my own collation of the general procedures for PSNR can be used
Update : 2024-05-22 Size : 1024 Publisher : 郝腾
【Special Effects】 fengzhi DL : 0: 求图像的峰值信噪比-PSNR for the image! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
Update : 2024-05-22 Size : 1024 Publisher : 武春梅
【Compress-Decompress algrithms】 bsc DL : 0: 对JPEG2000压缩编码后的码流文件用matlab进行RS信道编码，再BSC信道仿真，RS解码，计算PSNR- with JPEG2000 code stream file， using matlab to simulated the RS channel coding, and then BSC channel simulation, RS decoding, calculation of PSNR
Update : 2024-05-22 Size : 1024 Publisher : 王冲
【Windows Develop】 countpsnr DL : 0: 计算PSNR的小程序-count PSNR
Update : 2024-05-22 Size : 228352 Publisher : 小毅
【Graph program】 watermark_image DL : 0: 结合离散小波变换(DWT)技术，利用DWT与HVS相结合的良好特性，探索和建立了一种新的图像质量客观评价方法-taking advantage of the similarities of discrete wavelet transform (DWT) with HVS，a new methods for integrated image quality assessment
Update : 2024-05-22 Size : 200704 Publisher : 朱建伟
【Graph program】 ComputePSNR DL : 0: 调试通过的计算峰值信噪比PSNR源码（matlab）-Debugging through the calculation of source PSNR peak signal to noise ratio (matlab)
Update : 2024-05-22 Size : 1024 Publisher : zhoul
【Graph Drawing】 mymethod DL : 0: A error concealment sorce code that writed by myself.It s psnr not as good as JM86,but it s good in edge information.Help someone can improve it and it can do something for those strugling for errorcealment of h.264.
Update : 2024-05-22 Size : 1024 Publisher : 老何
【Special Effects】 SeqSnr DL : 0: 可以实现psnr的计算，可以实现psnr的计算-cacl psnr
Update : 2024-05-22 Size : 9216 Publisher : chenxiao
【Multimedia program】 Compute_psnr DL : 0: 计算视频序列的PSNR值，分别计算出每一帧的PSNR值-Calculation of the PSNR values of video sequences, respectively calculate the PSNR value of each frame
Update : 2024-05-22 Size : 3608576 Publisher : luchun
【Special Effects】 psnrWithFilterdImages DL : 0: 图形图像处理中计算处理效果的PSNR程序代码-Graphic image processing to calculate the treatment effect of PSNR code
Update : 2024-05-22 Size : 1024 Publisher : 李林
【Audio program】 audio_psnr DL : 0: 音频PSNR计算，双声道、512个采样点一帧，可自己修改 -audio PSNR caculation\double channel\512 samples per frame\change as your convience
Update : 2024-05-22 Size : 537600 Publisher : tina xu

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