utility to compare feature cache files across two feature caches

utils/cmp_feat_caches.m

+function cmp_feat_caches(dir1, dir2)
+% For comparing new feat cache files to known good
+% feat cache files after some change
+
+s = dir([dir1 '/*.mat']);
+
+for i = 1:length(s)
+  [a,b,c] = fileparts(s(i).name);
+  s1 = [dir1 '/' s(i).name];
+  s2 = [dir2 '/' b '.mat'];
+  if ~exist(s2)
+    fprintf('Skipping %s\n', s(i).name);
+    continue;
+  end
+
+  d1 = load(s1);
+  d2 = load(s2);
+
+  %  gt: [2448x1 logical]
+  %  overlap: [2448x20 single]
+  %  boxes: [2448x4 single]
+  %  feat: [2448x9216 single]
+  %  class: [2448x1 uint8]
+
+  assert(sum(abs(d1.gt - d2.gt)) == 0);
+  assert(sum(sum(abs(d1.overlap - d2.overlap))) == 0);
+  assert(sum(sum(abs(d1.boxes - d2.boxes))) == 0);
+  assert(sum(sum(abs(d1.feat - d2.feat))) == 0);
+  assert(sum(abs(d1.class - d2.class)) == 0);
+
+  fprintf('%d is ok\n', i);
+end