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How to remove specific noises?

I am doing a image processing project which is about the noise removal. I use erode() function, dilate() function, and fastNlMeansDenoising() function to remove noises. It is successful but not perfect for all my sample images.

Thus, I proposed a method that is to detect that specific color of noises and remove the similar color of that noises. As the color of noises is a majority in the image, I could detect that kind of color. But how can I do that?

How to remove specific noises?

I am doing a image processing project which is about the noise removal. I use erode() function, dilate() function, and fastNlMeansDenoising() function to remove noises. It is successful but not perfect for all my sample images.

Thus, I proposed a method that is to detect that specific color of noises and remove the similar color of that those noises. As the color of noises is a majority in the image, I could detect that kind of color. But how can I do that?

How to remove specific noises?

I am doing a image processing project which is about the noise removal. I use erode() function, dilate() function, and fastNlMeansDenoising() function to remove small pattern noises. It is successful but not perfect for all my sample images.

Thus, I proposed a method that is to detect that specific color of noises and remove the similar color of those noises. As the color of noises is a majority in the image, I could detect that kind of color. But how can I do that?