WorksheetsImage Pre-processing Quiz
Total questions: 10
Worksheet time: 5mins
What is the primary purpose of edge detectors in image processing?
To enhance color saturation
To locate sharp changes in intensity
To increase image resolution
To reduce image noise
Which operator is known for its high sensitivity to noise?
Sobel operator
Roberts operator
Prewitt operator
Canny edge detector
What does the Canny edge detector aim to minimize?
Processing time
Multiple responses to a single edge
Image size
Noise levels
What is the main advantage of using the Laplacian operator?
It detects edges in color images
It enhances color contrast
It is invariant to rotation
It is computationally inexpensive
What is the purpose of Gaussian smoothing in edge detection?
To sharpen edges
To reduce noise before finding edges
To increase image brightness
To enhance color details
Which of the following is a disadvantage of zero-crossing edge detection?
It is too fast
It can lose sharp corners
It is not sensitive to noise
It requires high computational power
What does the term 'scale-space image' refer to?
An image with increased brightness
An image with reduced noise
A representation of an image at different resolutions
An image with enhanced colors
What is the main goal of image restoration techniques?
To apply filters for better visualization
To enhance colors
To increase image size
To reconstruct the original image from a degraded version
Which filtering method is commonly used in image restoration to minimize error?
Bilateral filtering
Gaussian filtering
Inverse filtering
Median filtering
What is the purpose of hysteresis thresholding in edge detection?
To enhance color contrast
To eliminate spurious responses
To increase image resolution
To reduce processing time
