SciPy - Image Processing (scipy.ndimage)
How can you combine Sobel filters along both axes to get the overall edge magnitude?
How can you combine Sobel filters along both axes to get the overall edge magnitude?
hard📝 Application Q9 of 15
Step-by-Step Solution
Solution:
Step 1: Understand Sobel outputs
Sobel filter along x and y axes gives gradients in each direction.Step 2: Compute combined edge magnitude
Use Pythagorean theorem: sqrt(sobel_x^2 + sobel_y^2) to get overall edge strength.Final Answer:
Calculate sqrt(sobel_x**2 + sobel_y**2) -> Option BQuick Check:
Edge magnitude = sqrt(x^2 + y^2) [OK]
Quick Trick: Combine gradients with sqrt(x² + y²) for edge magnitude [OK]
Common Mistakes:
- Adding or subtracting gradients directly
- Multiplying gradients instead of combining magnitude
- Ignoring direction when combining
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