[ldd-img] Addition of IOF class

[katecrombie]

Issue Type ENHANCEMENT request.

Describe the issue identified (if applicable) There are no available attributes to describe image IOF parameters.

The Mars2020 Mastcam-Z team would like the addition of attributes to describe reflectance (IOF) images. These attributes could be made into a class if that is better for general use.

iof_conversion_coefficient - IOF Conversion coefficient (float_array) iof_conversion_coefficient_std - 1-sigma standard deviation in IOF conversion coefficient (float_array)

Describe the solution you'd like These attributes could go just after the class, or where ever you feel these are best located.

PDS4 IM Version 1.16

Need-by Date Needed for the upcoming Mars2020 data release.

Additional context Add any other context or examples products

[thareUSGS]

@katecrombie Is this need imminent?

For any new IOF can we simply add "radiance factor" as a radiometric_type? https://github.com/pds-data-dictionaries/ldd-img/blob/9f9bfa9c619132f9a929cece2a761e60f40eae35/src/PDS4_IMG_IngestLDD.xml#L2931

And then add these two new attributes as optional under the Radiometric_Correction class: https://github.com/pds-data-dictionaries/ldd-img/blob/9f9bfa9c619132f9a929cece2a761e60f40eae35/src/PDS4_IMG_IngestLDD.xml#L6578

But you also list them as float_array? Are they really or just a single floating-point value? Arrays again are harder to support in XML and I would need an example.

[katecrombie]

@thareUSGS , if this is easy to implement, soon would be good.

I like the "radiance factor" as a radiometric_type solution.

The two new IOF attributes could be implemented the same way as responsivity and responsivity_std. (no float arrays, it would be a single floating point value per attribute)

[thareUSGS]

still need better radiance factor definition but implemented. Having wired "logs" directory issue. Hopefully it will clean itself up.