[Solved] How can you combine SciPy filters to remove noise and then highlight edges in a color image? — Ans: Apply median filter on each color channel, then Sobel filter on grayscale | SciPy

SciPy - Image Processing (scipy.ndimage)

How can you combine SciPy filters to remove noise and then highlight edges in a color image?

AApply median filter on each color channel, then Sobel filter on grayscale

BApply Sobel filter on each color channel, then median filter on grayscale

CApply Gaussian filter on grayscale only, ignoring color channels

DApply median filter on grayscale, then invert colors

Step-by-Step Solution

Solution:

Step 1: Remove noise per color channel
Median filter works well on each color channel to reduce noise without mixing colors.
Step 2: Convert to grayscale for edge detection
Applying Sobel filter on grayscale simplifies edge detection across combined channels.
Final Answer:
Apply median filter on each color channel, then Sobel filter on grayscale -> Option A
Quick Check:
Noise removal per channel + edge detection on grayscale [OK]

Quick Trick: Filter noise per channel, detect edges on grayscale [OK]

Common Mistakes:

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