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gtatters / Thermimage

R Package for working with radiometric thermal image files and data
GNU General Public License v3.0
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Package not extracting thermal image data #21

Closed RussellGrayxd closed 2 years ago

RussellGrayxd commented 2 years ago

I have a dji mavic 2 enterprise advanced and collected a few thermal images I would like to analyze in R (see example attached). However, when I try to read in the data I get and error message (see code and error below):

##########################

Thermal image analysis

########################## setwd("D:/Detections") list.files() library(Thermimage) library(fields) f <- "D:/Detections/DJI_0067_T_S.JPG" img <- readflirJPG(f, exiftoolpath="installed")

Warning: [minor] Bad MakerNotes directory - D:/Detections/DJI_0067_T_S.JPG Error in if (cams$Info$RawThermalImageType == "TIFF") { : argument is of length zero In addition: Warning message: In readflirJPG(f, exiftoolpath = "installed") : Exiftool cannot extract raw thermal image data. Image does not contain FLIR radiometric data. Check with the user manual or manufacturer or ensure camera is set to save radiometric information.

There is nothing wrong with the radiometric data, I have read this same image into the DJI thermal analysis tool without issue. I am running Windows 10. with R 4.0.3 and freshly installed Thermimage.

DJI_0067_T_S

gtatters commented 2 years ago

As the error code suggests, exiftool cannot convert this image type using the assumptions built into Thermimage package. The package was only built for FLIR research style cameras, not the drone cameras.