Median filter rgb image

1. What does a median filter do to an image?
2. Does median filter blur the image?
3. How to apply median filter on image in matlab?
4. Which is better Gaussian or median filter?

What does a median filter do to an image?

Like the mean filter, the median filter considers each pixel in the image in turn and looks at its nearby neighbors to decide whether or not it is representative of its surroundings. Instead of simply replacing the pixel value with the mean of neighboring pixel values, it replaces it with the median of those values.

Does median filter blur the image?

Although median filters preserve edges in digital images, they are also known to remove fine image detail such as lines. For example, 3 × 3 median filters remove lines 1 pixel wide, and 5 × 5 median filters remove lines 2 pixels wide.

How to apply median filter on image in matlab?

J = medfilt2( I , [m n] ) performs median filtering, where each output pixel contains the median value in the m -by- n neighborhood around the corresponding pixel in the input image. J = medfilt2(___, padopt ) controls how medfilt2 pads the image boundaries.

Which is better Gaussian or median filter?

In this paper, two pre processing techniques like Gaussian noise removal and median filter are used to enhance the clarity of dental images. Results show that Gaussian filter has better result than median filters.