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WorksheetsDigital Image Processing Quiz
Total questions: 20
Worksheet time: 3mins
What is the basic function of an image histogram?
Compress the image
Equalize the image
Display intensity distribution
Filter the image
Which of the following is a point processing operation?
Histogram equalization
Image rotation
Convolution
Scaling
What is the typical range of pixel values in a grayscale image?
0-1
0-100
0-255
0-1024
Which filtering technique is best for removing salt-and-pepper noise?
Gaussian filter
Median filter
Average filter
Sobel filter
What is the purpose of image segmentation?
To reduce the image size
To enhance the image
To divide an image into meaningful regions
To change the image resolution
What is convolution in image processing?
Pixel averaging
Image smoothing
A mathematical operation on two functions
Data compression technique
Which of the following is not an image enhancement technique?
Smoothing
Sharpening
Segmentation
Histogram equalization
What is meant by image resolution?
Number of gray levels
The amount of compression
Amount of noise
Number of pixels per unit area
A 512×512 image with 8-bit depth will have a size of:
64 KB
256 KB
512 KB
1 MB
Which of the following is not a type of noise in images?
Salt-and-pepper
Gaussian
Speckle
Hamming
What is the main purpose of image restoration?
Reduce size
Improve resolution
Recover original image
Color correction
Which filter enhances edges in an image?
Low-pass filter
High-pass filter
Median filter
Average filter
What is the range of values in a normalized image?
0-1
0-255
-1 to 1
Depends on image
Which method is used to reduce the number of bits per pixel?
Filtering
Quantization
Encoding
Cropping
What type of noise appears as randomly scattered white and black pixels?
Gaussian
Speckle
Salt-and-pepper
Uniform
In digital image processing, which domain involves filtering in the frequency domain?
Spatial
Temporal
Color
Transform
Which transform converts image data into frequency domain?
Fourier
Histogram
Dilation
Quantization
Which method is not used for segmentation?
Thresholding
Region growing
Clustering
Sharpening
What is the minimum number of bits to represent a color image with 256 colors?
4
6
8
10
Which is a fundamental step in DIP?
Data compression
Image acquisition
Transmission
Video encoding
