如何添加泊松噪声和高斯噪声? [英] How to add Poisson noise and Gaussian noise?

问题描述

我正在尝试将高斯噪声和泊松噪声添加到图像中.

I'm trying to add Gaussian and Poisson noise to an image.

我已尝试如下实现此目标，但结果却不是我所期望的.

I have been tried to implement this as follows but the result is not what I was expecting.

     I = imread('eight.tif');
     J = imnoise(I,'gaussian',0, 0.02); %mean variance
     figure, imshow(I), figure, imshow(J)
     P = imnoise(I,'poisson'); 
     figure, imshow(P)
     K = J+P;
     figure, imshow(K)

如何正确添加泊松噪声和高斯噪声?

How do I correctly add Poisson noise and Gaussian noise?

推荐答案

您应该将 imnoise 应用于 J ，而不是 I .

You should be applying imnoise to J, not to I.

 K = imnoise(J,'poisson');
 figure, imshow(K)

无噪音已经增加了图像的噪点，因此添加 J + P 会将图像添加到自身中，另外到已经添加的噪音.

imnoise already adds the noise to your image, so adding J+P will add the image to itself, in addition to the already-added noise.

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