[Solved] What is wrong with this code that tries to get the blue channel?blue_channel = img[:, :, 3] — Ans: Index 3 is out of bounds for color channels | Matplotlib

Matplotlib - Image Display

What is wrong with this code that tries to get the blue channel?

blue_channel = img[:, :, 3]

ABlue channel is not in the last dimension

BIndex 3 is out of bounds for color channels

CMissing parentheses in slicing

DShould use img[:, :, 0] for blue

Step-by-Step Solution

Solution:

Step 1: Check color channel indices
RGB images have channels indexed 0,1,2 only.
Step 2: Identify index error
Index 3 is out of range and causes an error.
Final Answer:
Index 3 is out of bounds for color channels -> Option B
Quick Check:
Valid channel indices: 0,1,2 only [OK]

Quick Trick: Channel indices go from 0 to 2 in RGB images [OK]

Common Mistakes:

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