Howtosignalprocessing
- What is hysteresis in Canny edge detection?
- What is hysteresis thresholding?
- What is threshold in Canny edge detection?
- What is Edge tracking by hysteresis?
What is hysteresis in Canny edge detection?
The Canny operator uses the so-called “hysteresis” thresholding. Most thresholders use a single threshold limit, which means that if the edge values fluctuate above and below this value, the line appears broken. This phenomenon is commonly referred to as “streaking”.
What is hysteresis thresholding?
Hysteresis is the lagging of an effect—a kind of inertia. In the context of thresholding, it means that areas above some low threshold are considered to be above the threshold if they are also connected to areas above a higher, more stringent, threshold.
What is threshold in Canny edge detection?
The 'Canny' method uses two thresholds. For example, if the threshold is [0.1 0.15] then the edge pixels above the upper limit(0.15) are considered and edge pixels below the threshold(0.1) are discarded.
What is Edge tracking by hysteresis?
Track edge by hysteresis: Finalize the detection of edges by suppressing all the other edges that are weak and not connected to strong edges.
