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What does the erosion operation do to a binary image in morphological processing?

easy📝 Conceptual Q11 of 15
SciPy - Image Processing (scipy.ndimage)
What does the erosion operation do to a binary image in morphological processing?
AIt inverts the colors of the image.
BIt enlarges the white regions by adding pixels to edges.
CIt shrinks the white regions by removing edge pixels.
DIt blurs the image to reduce noise.
Step-by-Step Solution
Solution:

  1. Step 1: Understand erosion effect

    Erosion removes pixels on object boundaries, making white regions smaller.

  2. Step 2: Compare with other operations

    Dilation adds pixels, inversion changes colors, blurring smooths image; none match erosion.

  3. Final Answer:

    It shrinks the white regions by removing edge pixels. -> Option C

  4. Quick Check:

    Erosion = Shrink white regions [OK]
Quick Trick: Erosion shrinks shapes by cutting edges [OK]
Common Mistakes:
  • Confusing erosion with dilation
  • Thinking erosion adds pixels
  • Mixing erosion with color inversion

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