Question

why we use graphic filters​

Answer 1

Answer:

The filter reduces noise, in which every pixel is compared with its neighbors, and the extreme values (those that deviate in color by a large amount from a mean value) are replaced by a pixel with a mean color value.

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Answer 2

Explanation:

Because the filter reduces noise, in which every pixel is compared with its neighbors, and the extreme values (those that deviate in color by a large amount from a mean value) are replaced by a pixel with a mean color value .