Understanding Chroma Keying & Green Sub-Pixel Optics
Pure Green (hexadecimal #00FF00) represents the highest luminous efficacy channel in digital display hardware. Because digital camera Bayer filter sensors feature twice as many green photodiodes (RGGB pattern) as red or blue, green delivers the cleanest chrominance keying separation with the lowest video sensor noise.
For display calibration, a solid green screen energizes only the green sub-pixel array (0, 255, 0), making it easy to isolate dead green transistors and evaluate color filter uniformity.
Comparison Table: Sub-Pixel Transistor Diagnostic Matrix on Green
| Transistor Failure Mode | Visual Artifact on Green (#00FF00) | Hardware Diagnosis |
|---|---|---|
| Dead Green Sub-Pixel | Black Pinprick Dot | Green transistor failed in open-circuit state. |
| Stuck Red Sub-Pixel | Yellow Dot (#FFFF00) | Red emitter locked ON, mixing with green field. |
| Stuck Blue Sub-Pixel | Cyan Dot (#00FFFF) | Blue emitter locked ON, mixing with green field. |
| All Sub-Pixels Locked ON | Bright White Dot (#FFFFFF) | Hot pixel defect. |