Deep notes on sensors, drift, and architecture.
Engineering writeups for integrators, OEM partners, and customers who want to know exactly what is happening underneath the hood.
PDF report signing and evidence chain
How PerfectLum/EPD/Chroma sign reports, embed measurement metadata, and survive long-term archival.
Delta-E variants — which one to actually use
CIE76 vs CIE94 vs CIEDE2000 vs CIEDE2000 graphic arts — what each measures and when it matters for verification.
SmartSensor S1 I²C and UART register map overview
How the S1 OEM module exposes calibration and measurement registers, with read/write examples.
RemoteQA air-gapped deployment architecture
The components, network boundaries, and update model for running RemoteQA in fully isolated networks.
Backlight aging and luminance drift over time
Empirical drift curves we measure across LED, OLED, and CCFL panels, and what they imply for QA cadence.
Inside the CIE Tristimulus filter stack
How the glass filter array maps incoming light to RGB tristimulus values, and why 20-bit resolution matters.
