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Image Formation, Projective Geometry, Image Enhancement Exam Questions and Answers

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Image Formation, Projective Geometry, Image Enhancement Exam Questions and Answers High-pass Filter - Answer-Used to enhance high-frequency details in an image Low-pass filter - Answer-It smoothens the image by averaging pixel values High-pass filter - Answer-Emphasizes high-frequency compo...

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  • August 3, 2024
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Image Formation, Projective Geometry,
  • Image Formation, Projective Geometry,
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Image Formation, Projective Geometry,
Image Enhancement Exam Questions
and Answers
High-pass Filter - Answer-Used to enhance high-frequency details in an image

Low-pass filter - Answer-It smoothens the image by averaging pixel values

High-pass filter - Answer-Emphasizes high-frequency components

Band-pass filter - Answer-N/A

Laplacian filter - Answer-Highlights intensity discontinuities

Convolution - Answer-Differs from correlation by using the filter without rotation

Sobel operator - Answer-Used for edge detection

First derivative operator - Answer-Non-zero at the onset of intensity steps

Smoothing spatial filters - Answer-Primarily used for reducing random noise

Sharpening spatial filters - Answer-Based on differentiation

Salt and pepper noise - Answer-Best removed by a Median filter

Edge detection - Answer-Purpose is to detect abrupt changes in intensity

Neighborhood operation - Answer-Changing the intensity level at a location using
neighboring pixels

Equivalent to convolution in the spatial domain - Answer-Multiplication in the frequency
domain

Result of applying a smoothing filter to an image - Answer-To reduce noise
Quantization - Answer-Mapping continuous amplitude values to discrete levels

Rods - Answer-More numerous than cones in the human eye

Digitizing - Answer-Converting image data to binary form

Iris - Answer-Part of the eye responsible for its color

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