Reflectance data
This directory contains reflectance target files. These contain reflectance spectra for the different patches in the target, with the PCT data being recorded for a range of different stereo reflectance angles with the incidence angle being fixed at roughly the position of the PCT on the rover.
Each file is a PCOT archive (.parc) file which should be placed
in the cameras directory. This must be specified in the .pcot.ini file
in the locations section:
[Locations]
reflectances = /home/white/PCOT/reflectances
.pcot.ini can be
found in the user's home directory.
Reflectance files
Danger
At this stage of development the data may be inaccurate!
Colorchecker (Simple reflectance)
These contain data extracted from the Excel spreadsheet downloaded from https://babelcolor.com/colorchecker-2.htm#CCP2_data
Patches: B, BLK, C, G, M, N3.5, N5, N6.5, N8, R, W, Y, bgreen, dskin, flower, foli, lskin, modred, orng, oyel, purblu, purp, sky, ygreen
colorchecker.parc - 14415 bytes
PCT (BRDF for PCT)
Data captured by Jack Langston in August 2025, consisting of RS3500 captures of reflectance spectra from the different on Aberystwyth's PCT. The angles supported are phi in 30 degree increments between 210-360 inclusive, and theta in 5 degree increments between -80 and 80 inclusive. The zero phi angle runs from the centre of the WCT2065 (big pink) patch to the centre of the Pyroceram (big white) patch.
Patches: BG18, BG3, NG11, NG4, OG515, Pyroceram, RG610, WCT2065
pct.parc - 11303893 bytes
Spectralon (Simple reflectance)
Data captured from spectralon patches
Patches: S20, S40, S60, S80, S99
spectralon.parc - 37992 bytes