Is it possible to add a video filter?

I mainly use Tracker for black&white videos and I often need to edit my video's to increase contrast in order to see the objects I'm following.
One easy way is a logarithmic filter that boosts the magnitude nonlinearly, making differences in intensity more excessive.


This is how I did it in matlab
RGBc = imread(filename)
a = double(RGBc)/255; % Normalized Image
c = 2; % Constant
RGBc = c*log(1 + (a)); % Log Transform

But it would be awesome to have this as a native filter in Tracker.