This script documents the process used to correct the gradient error in the Seek Thermal cameras.
This is based on the technique used by Seek but is a non-faithful reproduction to document the method. It is hoped that it will provide a launching point for alternative clients to work around the hardware error.
The script is tested with GNU Octave 3.8.2, it should also work with Matlab.
% Load the data files load('data/floor.mat'); floor = flipud(fliplr(medfilt2(raw-cal)))(:,3:206+2) load('data/face.mat'); face = flipud(fliplr(medfilt2(raw-cal)))(:,3:206+2) % Reset the gradient filter clear de_gradient % Prime the low-pass-filter for i=1:20 de_gradient(floor); end % Generate the corrected face corrected = de_gradient(face);