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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Contributors

Feedback

Image Enhancement

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Beginner

Intermediate

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Which filter is most effective for removing salt-and-pepper noise?

a: Mean Filter Explanation

Explanation

b: Gaussian Filter Explanation

Explanation

c: Median Filter Explanation

Explanation

d: Sobel Filter Explanation

Explanation

The Laplacian operator is based on:

a: First derivative Explanation

Explanation

b: Second derivative Explanation

Explanation

c: Integral Explanation

Explanation

d: Histogram Explanation

Explanation

Unsharp masking enhances:

a: Low frequencies Explanation

Explanation

b: High frequencies Explanation

Explanation

c: Both Explanation

Explanation

d: None Explanation

Explanation

Gaussian smoothing is mainly used to:

a: Sharpen edges Explanation

Explanation

b: Reduce Gaussian noise Explanation

Explanation

c: Segment objects Explanation

Explanation

d: Detect corners Explanation

Explanation

Mean filter may blur:

a: Only background Explanation

Explanation

b: Only foreground Explanation

Explanation

c: Edges Explanation

Explanation

d: Histogram peaks Explanation

Explanation

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