### 1. 项目介绍
#### 1.1 项目的背景
该项目是为了研究基于深度卷积神经网络的图像去噪算法,是利用DnCNN模型,但是为了比较该算法的效果,另外实现了四种传统的图像去噪算法(均值滤波、中值滤波、非局部均值滤波NLM和三维块匹配滤波BM3D)作为对照组。
#### 1.2 噪声强度和类型
项目中实现五种算法对噪声强度为10,15,20...60,65,70的高斯白噪声进行处理。
#### 1.3 评价指标
图像去噪后,如何评估算法去噪效果的好坏呢?项目中采用峰值信噪比PSNR和结构相似性SSIM作为评价指标。一般来说,PSNR越大,去噪效果越好。SSIM取值为0到1,越接近1,表示效果越好。
### 2. 数据集介绍
该项目中只是对Set12数据集进行处理,也就是项目中的Set12目录下的12张图片。如果觉得数据量不够充分,可以自行添加其他数据集,在代码中修改一下数据集的目录即可。
### 3. 代码介绍
对于均值滤波、中值滤波、和NLM,MATLAB都已经实现了,所以我们直接调用MATLAB自带的函数就可以。
BM3D和DnCNN的代码都是从别人那儿clone下来,做了一些小的修改。
五种算法都是对Set12数据集进行去噪,去噪的结果并没有保存,只是在运行过程中能看到去噪前和去噪后的图像对比,感兴趣的朋友可以自己将图像保存下来观察。
### 4. 代码运行
五种算法分别在五个不同的目录中,所以你只需要进行对应的目录,运行代码即可。
+ 均值滤波、中值滤波、NLM算法对应的目录分别为avefilter、medainfilter、nlm-image-denoising。每个目录下只有一个.m文件,所以只需要运行对应的文件即可。
+ BM3D对应的目录是BM3D,运行该目录下的main.m程序即可。
+ DnCNN对应的目录是DnCNN,运行该目录下的Demo_test_DnCNN.m程序即可,该算法目录中对应的还有好几个代码,都是原项目中有的,我没有动过,感兴趣的朋友可以自己看看。
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该资源内项目源码是个人的课程设计、毕业设计,代码都测试ok,都是运行成功后才上传资源,答辩评审平均分达到96分,放心下载使用! ## 项目备注 1、该资源内项目代码都经过测试运行成功,功能ok的情况下才上传的,请放心下载使用! 2、本项目适合计算机相关专业(如计科、人工智能、通信工程、自动化、电子信息等)的在校学生、老师或者企业员工下载学习,也适合小白学习进阶,当然也可作为毕设项目、课程设计、作业、项目初期立项演示等。 3、如果基础还行,也可在此代码基础上进行修改,以实现其他功能,也可用于毕设、课设、作业等。 下载后请首先打开README.md文件(如有),仅供学习参考, 切勿用于商业用途。 该资源内项目源码是个人的课程设计,代码都测试ok,都是运行成功后才上传资源,答辩评审平均分达到96分,放心下载使用! ## 项目备注 1、该资源内项目代码都经过测试运行成功,功能ok的情况下才上传的,请放心下载使用! 2、本项目适合计算机相关专业(如计科、人工智能、通信工程、自动化、电子信息等)的在校学生、老师或者企业员工下载学习,也适合小白学习进阶,当然也可作为毕设项目、课程设计、作业、项目初期立项演示等。 3、如果基础还行,也可在此代码基础上进行修改,以实现其他功能,也可用于毕设、课设、作业等。 下载后请首先打开README.md文件(如有),仅供学习参考, 切勿用于商业用途。
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