Matplotlib - Image Display
Which of the following is the correct syntax to extract the blue channel from a 3D numpy image array named
img?Which of the following is the correct syntax to extract the blue channel from a 3D numpy image array named img?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Understand image array dimensions
Image arrays have shape (height, width, channels). The last dimension is color channels.Step 2: Extract blue channel
Blue channel is index 2 in the last dimension, so use img[:, :, 2].Final Answer:
blue_channel = img[:, :, 2] -> Option AQuick Check:
Blue channel extraction = img[:, :, 2] [OK]
Quick Trick: Use img[:, :, 2] to get blue channel from RGB image [OK]
Common Mistakes:
- Mixing axis order
- Using wrong index for blue
- Slicing rows or columns incorrectly
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