Generated by claude-sonnet-4-6 · 2026-06-21 03:18 · grounding rag
Model Answer
Computers store RGB images using three separate channels — Red (R), Green (G), and Blue (B). Each channel is a 2D array of pixels, with each pixel value ranging from 0 to 255. All three channels are combined to form the final colour image. Thus, each pixel in an RGB image has three values that together determine its colour.
Source: Chapter 5, RGB Images section
Explanation
- The examiner expects you to mention: three channels (R, G, B), pixel values 0–255, and that combining all three gives the final colour.
- Avoid writing about grayscale here — stay focused on RGB storage.
- A diagram description (channels stacked) earns full marks if time allows, but the written explanation above is sufficient for 2 marks.