HDR Tone Mapping

This setup is composed of two Gemini with their Composite charts. The composite chart contains three main patterns — grayscale, 24-color matrix, and dead leaves. The setup lets you verify your camera’s ability to consistently reproduce colors, manage noise, and preserve contrast and texture in comparison with an objective reference. Using recommended lighting, you can simulate a dynamic range of up to 15 EV in the test scene.

Reference:

• Charts: CT002 (CT001 old version for Kinoflo)
• Transmitting lighting systems: GEMINI_002

Contrast preservation:​

• Histogram
• Entropy for each channel

Color consistency:​

• Color fidelity
• White balance
• Metrics: ∆L, ∆a, ∆b, ∆ab, ∆E, ∆C, ∆H

Texture preservation:​

• Texture MTF and acutance
• Edge MTF and acutance
• Visual noise at 50%
• Exposure (grey level at 18%)