GUIDE Infrared / InfiRay
Free companion analysis software for InfiRay (GUIDE) thermal cameras. InfiRay cameras are the most affordable genuine thermal cameras available (~£200-600), making this the thermal analysis entry point for investigators on a budget.
InfiRay Studio is the PC analysis companion for InfiRay thermal cameras, manufactured by GUIDE Infrared. InfiRay cameras — particularly the P2 Pro smartphone attachment (~£200) and P-series standalone cameras (~£300-600) — have made genuine thermal imaging accessible to investigators who cannot afford FLIR equipment (~£1,500-8,000+). InfiRay Studio opens the camera's native file format and provides basic measurement tools.
The software provides spot temperature measurement, area analysis, and line profile tools. You can click any point in a thermal image to read its temperature, draw a rectangle to see the temperature range within a region, or draw a line to see temperature variation across a cross-section. Palettes can be switched to optimise contrast for different analytical purposes (rainbow, iron, white hot, black hot).
InfiRay cameras have an important limitation compared to FLIR Research Studio: not all models capture fully calibrated radiometric data, and the accuracy of budget thermal sensors is lower (typically ±2°C vs FLIR's ±1°C or better). Small temperature differences (under 1°C) should be treated with caution. The tool is still highly valuable for identifying larger thermal anomalies — drafts, heat sources, surface temperature patterns — at a fraction of FLIR system costs.
Investigator Note
Verify your specific InfiRay camera model captures radiometric data before relying on temperature measurements. ±2°C accuracy means temperature differences below 1-2°C are within measurement uncertainty and should not be presented as significant anomalies.
