Question

To avoid aliasing which of the following methods can work when we are down sampling an image?
A Sharpening of image
B Blurring of image
C Median filtering where you replace every pixel by the median of pixels
in a window around the pixel.
D Equalization of pistogram​

Answer 1

Explanation:

D is correct ok

may be it help you

Answer 2

To avoid aliasing which of the following methods can work when we are down sampling an image C) Median filtering where you replace every pixel by the median of pixels in a window around the pixel.

Definition:

• A common method for reducing noise in an image or signal is the median filter, a non-linear digital filtering technique.
• This kind of noise reduction is a common pre-processing procedure to enhance the outcomes of subsequent processing (for example, edge detection on an image).

Uses:

• In addition to signal processing, time series processing, and image processing, median filters are frequently employed as smoothers.
• The ability of the median filter to completely eliminate the impact of input noise values with exceptionally large magnitudes is a significant advantage it has over linear filters.

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