Add proper color keying to tracker-pt

Instead of just selecting the red/green/blue channels, also subtract the
other channels. This allows for point tracking with just colored spots,
rather than IR LEDs -- green and magenta work particularly well for
this.

This keeps the existing "Red/Green/Blue only" options, but adds
"Red/Green/Blue/Cyan/Yellow/Magenta filter" options, which do a better
job of isolating those colors.

1 files changed, 6 insertions, 0 deletions

diff --git a/tracker-pt/ftnoir_tracker_pt_dialog.cpp b/tracker-pt/ftnoir_tracker_pt_dialog.cpp
index edf689a9..6c284381 100644
--- a/tracker-pt/ftnoir_tracker_pt_dialog.cpp
+++ b/tracker-pt/ftnoir_tracker_pt_dialog.cpp
@@ -100,6 +100,12 @@ TrackerDialog_PT::TrackerDialog_PT(const QString& module_name) :
         pt_color_red_only,
         pt_color_green_only,
         pt_color_blue_only,
+        pt_color_red_filter,
+        pt_color_green_filter,
+        pt_color_blue_filter,
+        pt_color_cyan_filter,
+        pt_color_yellow_filter,
+        pt_color_magenta_filter,
     };
 
     for (unsigned k = 0; k < std::size(color_types); k++)