Q'] dir containing test ground truth
   .pLoad    - [] params for bbGt&gt;bbLoad for test data (see bbGt&gt;bbLoad)
   .thr      - [.5] threshold on overlap area for comparing two bbs
   .mul      - [0] if true allow multiple matches to each gt
   .reapply  - [0] if true re-apply detector even if bbs already computed
   .ref      - [10.^(-2:.25:0)] reference points (see bbGt&gt;compRoc)
   .lims     - [3.1e-3 1e1 .05 1] plot axis limits
   .show     - [0] optional figure number for display

 OUTPUT