EEVblog Electronics Community Forum
Products => Thermal Imaging => Topic started by: edgar_eacg on March 19, 2019, 10:16:07 pm
-
Greetings,
Has someone been able to decode the raw thermal image for FLIR T630sc model? I've been working with P640 and ZenMuseXT models as mentioned in enhancement: extract binary data from FLIR radiometric jpg (http://enhancement: extract binary data from FLIR radiometric jpg) . But now that I try to do it, in the same way, the raw thermal data has no sense and I can't get the digital counts from it. According to its datasheet https://www.flirmedia.com/MMC/THG/Brochures/RND_015/RND_015_US.pdf (https://www.flirmedia.com/MMC/THG/Brochures/RND_015/RND_015_US.pdf) the dynamic range is 14 bit and verifying with ExifTool the byte order is also Little-Endian. I can extract RawThermalImage with ExifTool but the data has no sense when comparing with a csv counts datasheet generated with ResearchIR. The attachments don't allow files bigger than 1 MB so, this is the drive link of a T630sc file sample:
https://drive.google.com/open?id=1zuD9QJIqbxYiP6NZ-NogAo4xCBkxREVA (https://drive.google.com/open?id=1zuD9QJIqbxYiP6NZ-NogAo4xCBkxREVA)
Please, if someone has accomplished the corresponding decoding, provide some guidelines.
Meanwhile, I'll continue trying.
Beforehand, Thanks.
-
edgar_eacg,
I don't know if you're still interested in this from a year ago, but I decoded the file you posted to google_drive (FLIR0036.jpg). The radiometric data is in PNG format with the bytes reversed. In other words, after you decompress the PNG, you have to swap bytes to get good temperature data. If you do this you will get a minimum temperature of 3.2 C and a maximum of 54.9 C and a center point temperature (at x=320, y=240) of 26.8 C. Hope this helps.