Week 3 Low Level Vision & Edge Detection Flashcards
What does low-level vision focus on?
Low-level vision focuses on basic operations applied to image pixels.
What tasks are part of low-level vision?
Tasks include filtering, edge detection, and noise reduction.
How does filtering modify images?
Filtering modifies pixel values based on neighbouring pixels, often for smoothing or sharpening.
What operation is fundamental in many filtering techniques?
The convolution operation is the backbone of many filtering techniques.
What does edge detection identify?
Edge detection identifies significant transitions in intensity values.
What is the Sobel operator used for?
The Sobel operator detects edges by computing intensity gradients.
Why is the Canny edge detector widely used?
The Canny edge detector is widely used for its multi-step approach to accurate edge detection.
What role does Gaussian smoothing play in edge detection?
Gaussian smoothing reduces noise before edge detection.
What is thresholding in image processing?
Thresholding is used to retain only strong edges and discard weak edges.
Why is low-level vision essential for higher-level tasks?
Low-level vision is essential for higher-level tasks like segmentation and object recognition.
