added PR- suffix in detrac results table head

Author: bochinski

README.md

@@ -67,16 +67,16 @@ Note that you still need a working python environment.
 You should obtain something like the following results for the 'DETRAC-Train' set:
 
 ##### DETRAC-Train Results
-| Detector | Rcll | Prcn | FAR | MT    | PT  | ML     | FP      | FN      | IDs   | FM    | MOTA | MOTP | MOTAL |
-| -------- | ---- | ---- | --- | ----- | --- | ------ | ------- | ------- | ----- | ----- |----- |------|-------|
-| EB       |22.12 |31.53 |0.26 |17.65  |13.22|18.41   |14796.52 |171806.84|2311.25|2445.89|19.41 |28.89 |19.78  |
-| R-CNN    |27.86 |52.90 |0.11 |19.53  |17.03|18.56   |9047.95  |157521.18|4842.18|4969.57|25.46 |44.39 |26.29  |
+| Detector | PR-Rcll | PR-Prcn | PR-FAR | PR-MT | PR-PT  | PR-ML | PR-FP   | PR-FN   | PR-IDs| PR-FM | PR-MOTA | PR-MOTP | PR-MOTAL |
+| -------- | ------- | ------- | ------ | ----- | ------ | ----- | ------- | ------- | ----- | ----- | ------- | ------- | -------- |
+| EB       |22.12    |31.53    |0.26    |17.65  |13.22   |18.41  |14796.52 |171806.84|2311.25|2445.89|19.41    |28.89    |19.78     |
+| R-CNN    |27.86    |52.90    |0.11    |19.53  |17.03   |18.56  |9047.95  |157521.18|4842.18|4969.57|25.46    |44.39    |26.29     |
 
 ##### DETRAC-Test (Overall) Results
-| Detector | Rcll | Prcn | FAR | MT    | PT  | ML     | FP      | FN      | IDs   | FM    | MOTA | MOTP | MOTAL |
-| -------- | ---- | ---- | --- | ----- | --- | ------ | ------- | ------- | ----- | ----- |----- |------|-------|
-| EB       |22.11 |31.53 |0.26 |17.65  |13.22|18.41   |14796.52 |171806.84|2311.25|2445.89|19.41 |28.89 |19.77  |
-| R-CNN    |20.37 |44.86 |0.40 |13.81  |16.40|20.69   |22535.15 |193041.87|5029.42|5795.73|16.01 |38.35 |16.81  |
+| Detector | PR-Rcll | PR-Prcn | PR-FAR | PR-MT | PR-PT  | PR-ML | PR-FP   | PR-FN   | PR-IDs| PR-FM | PR-MOTA | PR-MOTP | PR-MOTAL |
+| -------- | ------- | ------- | ------ | ----- | ------ | ----- | ------- | ------- | ----- | ----- | ------- | ------- | -------- |
+| EB       |22.11    |31.53    |0.26    |17.65  |13.22   |18.41  |14796.52 |171806.84|2311.25|2445.89|19.41    |28.89    |19.77     |
+| R-CNN    |20.37    |44.86    |0.40    |13.81  |16.40   |20.69  |22535.15 |193041.87|5029.42|5795.73|16.01    |38.35    |16.81     |
 
 ##### EB detections
 The public detections of [EB](http://zyb.im/research/EB/) are not available on the