updated Gabor ground truth (now 4 frequencies)

tests/test_gabor_truth.h

@@ -1,41 +1,32 @@
 #include <vector>
 
 // Ground truth at 
-//      f0 = { 1, 2, 4, 8, 16, 32, 64 }
-//      gamma = 0.1
-//      sig2lam = 0.8
-//      kernel size = 16
-//      f0LP = 0.1
-//      theta = pi / 4
-//      GRAYthr = 0.025
+//      'gabor_f0': 0.1
+//      'gabor_freqs' : [4.0, 16.0, 32.0, 64.0]
+//      'gabor_thetas' : [0.0, 45.0, 90.0, 135.0]
+//      'gabor_gamma' : 0.1
+//      'gabor_kersize' : 16
+//      'gabor_sig2lam' : 0.8
+//      'gabor_thold' : 0.025
 //
 const static std::vector<std::vector<double>> gabor_truth = {
-    {   0.98876404494382020,
-        0.32584269662921350,
-        0.62921348314606740,
-        1.0,
-        1.0,
-        0.96629213483146070,
-        0.95505617977528090 },
-    {   0.080717488789237665,
-        0.0,
-        0.0,
-        0.99551569506726456,
-        0.98654708520179368,
-        0.96860986547085204,
-        0.90582959641255600 },
-    {   0.25268817204301075,
-        0.0053763440860215058,
-        0.10215053763440861,
-        0.98387096774193550,
-        0.97311827956989250,
-        0.94086021505376349,
-        0.88172043010752688 },
-    {   0.53886010362694303,
-        0.20207253886010362,
+    {   1.0112359550561798,
+        0.83146067415730340,
+        0.79775280898876400,
+        0.49438202247191010 },
+
+    {   1.0044843049327354,
+        0.72645739910313900,
         0.0,
-        0.95854922279792742,
-        0.92746113989637302,
-        0.92227979274611394,
-        0.89637305699481862 },
+        0.0 },
+
+    {   1.0053763440860215,
+        0.89247311827956988,
+        0.12903225806451613,
+        0.0 },
+
+    {   1.0103626943005182,
+        0.89637305699481862,
+        0.34715025906735753,
+        0.0 },
 };