Matplotlib - Image Display
Which of the following is the correct way to extract the green channel from a 3D image array named
img in matplotlib?Which of the following is the correct way to extract the green channel from a 3D image array named img in matplotlib?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Recall channel indexing in image arrays
Color channels are stored in the last dimension, with red=0, green=1, blue=2.Step 2: Extract green channel correctly
To get green, select all rows and columns, but only index 1 in the last dimension: img[:, :, 1].Final Answer:
green = img[:, :, 1] -> Option DQuick Check:
Green channel index = 1 [OK]
Quick Trick: Use img[:, :, 1] to get green channel [OK]
Common Mistakes:
- Mixing up axis order and indexing rows or columns
- Using wrong channel index for green
- Selecting wrong dimensions
Master "Image Display" in Matplotlib
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