# Smoothing Spacial Filter MCQ [Free PDF] – Objective Question Answer for Smoothing Spacial Filter Quiz

1. The output of a smoothing, linear spatial filtering is a ____________ of the pixels contained in the neighborhood of the filter mask.

A. Sum
B. Product
C. Average
D. Dot Product

Smoothing is simply the average of the pixels contained in the neighborhood.

2. Averaging filters is also known as ____________ filter.

A. Low pass
B. High pass
C. Bandpass
D. None of the Mentioned

Averaging filters are also known as Low pass filters.

3. What are the undesirable side effects of Averaging filters?

A. No side effects
B. Blurred image
C. Blurred edges
D. Loss of sharp transitions

Blue edges are the undesirable side effect of Averaging filters.

4. A spatial averaging filter in which all coefficients are equal is called ________.

A. Square filter
B. Neighbourhood
C. Box filter
D. Zero filter

A spatial averaging filter in which all coefficients are equal is called a Box filter.

5. Which term is used to indicate that pixels are multiplied by different coefficients?

A. Weighted average
B. Squared average
C. Spatial average
D. None of the Mentioned

It is called weighted average since more importance(weight) is given to some pixels.

6. The non-linear spacial filters whose response is based on the ordering of the pixels contained is called _____________.

A. Box filter
B. Square filter
C. Gaussian filter
D. Order-statistic filter

The non-linear spatial filter whose response is based on the ordering of the pixels contained is called an Order-statistic filter.

7. Impulse noise in Order-statistic filter is also called as _______________

A. Median noise
B. Bilinear noise
C. Salt and pepper noise
D. None of the Mentioned

It is called salt-and-pepper noise because of its appearance as white and black dots superimposed on an image.

8. Best example of an Order-statistic filter is _________

A. Impulse filter
B. Averaging filter
C. Median filter
D. None of the Mentioned

The median filter is the best-known Order-statistic filter.

9. What does “eliminated” refer to in the median filter?

A. Force to the average intensity of neighbors
B. Force to median intensity of neighbors
C. Eliminate median value of pixels
D. None of the Mentioned

It refers to forcing to median intensity of neighbors.

10. Which of the following is best suited for salt-and-pepper noise elimination?

A. Average filter
B. Box filter
C. Max filter
D. Median filter