X-Git-Url: http://git.kpe.io/?a=blobdiff_plain;ds=sidebyside;f=include%2Fbackprojectors.h;h=f0cc19a1d0147ce6da2dab7169f44735418cc2df;hb=6850134e4711a842cc7c0a306a9e4243df06b952;hp=0a2a8e12c68b75ed0c91ffc17b42a97cb1e3a659;hpb=b8d8c64ac7fe071dd806064ae37f48e0e5b153bd;p=ctsim.git

diff --git a/include/backprojectors.h b/include/backprojectors.h
index 0a2a8e1..f0cc19a 100644
--- a/include/backprojectors.h
+++ b/include/backprojectors.h
@@ -9,7 +9,7 @@
 **  This is part of the CTSim program
 **  Copyright (C) 1983-2000 Kevin Rosenberg
 **
-**  $Id: backprojectors.h,v 1.6 2000/07/07 15:30:59 kevin Exp $
+**  $Id: backprojectors.h,v 1.7 2000/07/09 08:16:17 kevin Exp $
 **
 **  This program is free software; you can redistribute it and/or modify
 **  it under the terms of the GNU General Public License (version 2) as
@@ -52,7 +52,8 @@ class Backprojector
     I_2BSPLINE,
     I_3BSPLINE,
 #endif
-    INTERP_LINEAR        // Linear interpolation 
+    INTERP_LINEAR,        // Linear interpolation 
+    INTERP_FREQ_PREINTERPOLATE,
   } InterpolationID;
 
   static const char BPROJ_TRIG_STR[]=     "trig";
@@ -65,7 +66,7 @@ class Backprojector
   static const char INTERP_NEAREST_STR[]=  "nearest";
   static const char INTERP_LINEAR_STR[]=   "linear";
   static const char INTERP_BSPLINE_STR[]=  "bspline";
-
+  static const char INTERP_FREQ_PREINTERPOLATE_STR[]= "freq_preinterpolate";
 
   Backprojector (const Projections& proj, ImageFile& im, const char* const backprojName, const char* const interpName);