Hi @LeoDJ and @TilCreator, I recently purchased a Thermal Master P2 camera, and I'm working on extracting temperature data from the raw image files for further analysis. So far, I’ve managed to retrieve the raw data from the JPG files and convert it to temperature using the formula suggested by @LeoDJ in another blog (thank you for that helpful insight!):
T = x / 64 - 273.15 (Eq. 1)
However, I’ve run into an issue when switching the camera to extended range mode (100–600°C). The conversion using Eq. 1 appears to give incorrect results, even though the Temp Master app and the saved JPG image show accurate temperatures.
I tested a hot source at approximately 280°C, verified with both the Thermal Master P2 and a FLIR E75 camera. Both cameras reported a consistent temperature of ~280°C, so I’m confident that’s the correct value. However, when I extract the raw values from the JPG and apply Eq. 1, I get a result of 310°C. In another test, a source at 310.1°C yields a converted temperature of 442.7°C using the same equation, a clear mismatch.
I also tried reading the image using P2 Pro Viewer (https://p2proviewer.streamlit.app/) and observed the same (incorrect) temperature values, which suggest the issue lies in the conversion rather than the raw extraction.
Do you have an idea on why that happens? Does P2Pro-Viewer apply any different corrections when in Low-Gain mode?
Any suggestions, insights, or guidance would be greatly appreciated! Thanks in advance for your help.
Best regards,
Simone
Additional detail on the above as well as testing JPG can be found at: https://www.eevblog.com/forum/thermal-imaging/infiray-and-their-p2-pro-discussion/msg5927754/#msg5927754
Hi @LeoDJ and @TilCreator, I recently purchased a Thermal Master P2 camera, and I'm working on extracting temperature data from the raw image files for further analysis. So far, I’ve managed to retrieve the raw data from the JPG files and convert it to temperature using the formula suggested by @LeoDJ in another blog (thank you for that helpful insight!):
T = x / 64 - 273.15 (Eq. 1)
However, I’ve run into an issue when switching the camera to extended range mode (100–600°C). The conversion using Eq. 1 appears to give incorrect results, even though the Temp Master app and the saved JPG image show accurate temperatures.
I tested a hot source at approximately 280°C, verified with both the Thermal Master P2 and a FLIR E75 camera. Both cameras reported a consistent temperature of ~280°C, so I’m confident that’s the correct value. However, when I extract the raw values from the JPG and apply Eq. 1, I get a result of 310°C. In another test, a source at 310.1°C yields a converted temperature of 442.7°C using the same equation, a clear mismatch.
I also tried reading the image using P2 Pro Viewer (https://p2proviewer.streamlit.app/) and observed the same (incorrect) temperature values, which suggest the issue lies in the conversion rather than the raw extraction.
Do you have an idea on why that happens? Does P2Pro-Viewer apply any different corrections when in Low-Gain mode?
Any suggestions, insights, or guidance would be greatly appreciated! Thanks in advance for your help.
Best regards,
Simone
Additional detail on the above as well as testing JPG can be found at: https://www.eevblog.com/forum/thermal-imaging/infiray-and-their-p2-pro-discussion/msg5927754/#msg5927754