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Title: Red Tone Reproduction Curve
Post by: gverhoev on July 12, 2016, 07:02:59 PM

Hi all,

I am unsuccessful in extracting the Red/Green/Blue Tone Reproduction Curves from the colour profile of an image file. I don't know what I do wrong. Using something like:
exiftool.exe -b -GreenTRC Apple_RGB.jpg > curve.txt does not provide me any numbers that represent this curve.

Could somebody point me out my mistake? Cheers,

Geert

Title: Re: Red Tone Reproduction Curve
Post by: Phil Harvey on July 12, 2016, 09:36:21 PM

Hi Geert,

The output from your command is the binary data for the green tone curve. You would have to read the ICC specification to see how to interpret this data.

- Phil

Title: Re: Red Tone Reproduction Curve
Post by: gverhoev on July 13, 2016, 06:05:03 AM

OK Phil, so you are saying my code is correct and I should not expect to see any numbers that represent these curves? Will check this further. Many thanks.

Title: Re: Red Tone Reproduction Curve
Post by: Phil Harvey on July 13, 2016, 08:24:18 AM

Yup

ExifTool Forum

ExifTool => The "exiftool" Application => Topic started by: gverhoev on July 12, 2016, 07:02:59 PM