fix some solov2 inference error (#1648)

configs/solov2/README.md

@@ -12,17 +12,17 @@ SOLOv2 (Segmenting Objects by Locations) is a fast instance segmentation framewo
 
 ## Model Zoo
 
-| Backbone                | Multi-scale training  | Lr schd | Inf time (V100) | Mask AP |         Download                  | Configs |
+| Backbone                | Multi-scale training  | Lr schd | V100 FP32(FPS) | Mask AP |         Download                  | Configs |
 | :---------------------: | :-------------------: | :-----: | :------------: | :-----: | :---------: | :------------------------: |
-| Mobilenetv3-FPN                 |  True                |   3x    |     20.0ms          |  30.0   | [model](https://paddlemodels.bj.bcebos.com/object_detection/solov2_mobilenetv3_fpn_448_3x.pdparams) | [config](https://github.com/PaddlePaddle/PaddleDetection/tree/master/configs/solov2/solov2_mobilenetv3_fpn_448_3x.yml) |
-| R50-FPN                 |  False                |   1x    |     45.7ms          |  35.6   | [model](https://paddlemodels.bj.bcebos.com/object_detection/solov2_r50_fpn_1x.pdparams) | [config](https://github.com/PaddlePaddle/PaddleDetection/tree/master/configs/solov2/solov2_r50_fpn_1x.yml) |
-| R50-FPN                 |  True                |   3x    |     45.7ms          |  37.9   | [model](https://paddlemodels.bj.bcebos.com/object_detection/solov2_r50_fpn_3x.pdparams) | [config](https://github.com/PaddlePaddle/PaddleDetection/tree/master/configs/solov2/solov2_r50_fpn_3x.yml) |
-| R101-VD-FPN                 |  True               |   3x    |     82.6ms       |  42.6   | [model](https://paddlemodels.bj.bcebos.com/object_detection/solov2_r101_vd_fpn_3x.pdparams) | [config](https://github.com/PaddlePaddle/PaddleDetection/tree/master/configs/solov2/solov2_r101_vd_fpn_3x.yml) |
+| Mobilenetv3-FPN                 |  True                |   3x    |     50          |  30.0   | [model](https://paddlemodels.bj.bcebos.com/object_detection/solov2_mobilenetv3_fpn_448_3x.pdparams) | [config](https://github.com/PaddlePaddle/PaddleDetection/tree/master/configs/solov2/solov2_mobilenetv3_fpn_448_3x.yml) |
+| R50-FPN                 |  False                |   1x    |     21.9          |  35.6   | [model](https://paddlemodels.bj.bcebos.com/object_detection/solov2_r50_fpn_1x.pdparams) | [config](https://github.com/PaddlePaddle/PaddleDetection/tree/master/configs/solov2/solov2_r50_fpn_1x.yml) |
+| R50-FPN                 |  True                |   3x    |     21.9          |  37.9   | [model](https://paddlemodels.bj.bcebos.com/object_detection/solov2_r50_fpn_3x.pdparams) | [config](https://github.com/PaddlePaddle/PaddleDetection/tree/master/configs/solov2/solov2_r50_fpn_3x.yml) |
+| R101-VD-FPN                 |  True               |   3x    |     12.1       |  42.6   | [model](https://paddlemodels.bj.bcebos.com/object_detection/solov2_r101_vd_fpn_3x.pdparams) | [config](https://github.com/PaddlePaddle/PaddleDetection/tree/master/configs/solov2/solov2_r101_vd_fpn_3x.yml) |
 
 ## Enhanced model
-| Backbone                | Input size  | Lr schd | Inf time (V100) | Mask AP |         Download                  | Configs |
+| Backbone                | Input size  | Lr schd | V100 FP32(FPS) | Mask AP |         Download                  | Configs |
 | :---------------------: | :-------------------: | :-----: | :------------: | :-----: | :---------: | :------------------------: |
-| Light-R50-VD-DCN-FPN          |  512     |   3x    |     25.9ms          |  38.8   | [model](https://paddlemodels.bj.bcebos.com/object_detection/solov2_light_r50_vd_fpn_dcn_512_3x.pdparams) | [config](https://github.com/PaddlePaddle/PaddleDetection/tree/master/configs/solov2/solov2_light_r50_vd_fpn_dcn_512_3x.yml) |
+| Light-R50-VD-DCN-FPN          |  512     |   3x    |     38.6          |  38.8   | [model](https://paddlemodels.bj.bcebos.com/object_detection/solov2_light_r50_vd_fpn_dcn_512_3x.pdparams) | [config](https://github.com/PaddlePaddle/PaddleDetection/tree/master/configs/solov2/solov2_light_r50_vd_fpn_dcn_512_3x.yml) |
 
 ## Citations
 ```

deploy/python/infer.py

@@ -41,7 +41,7 @@ SUPPORT_MODELS = {
 }
 
 
-class Detector():
+class Detector(object):
     """
     Args:
         config (object): config of model, defined by `Config(model_dir)`

ppdet/utils/export_utils.py

@@ -38,7 +38,7 @@ TRT_MIN_SUBGRAPH = {
     'Face': 3,
     'TTFNet': 3,
     'FCOS': 3,
-    'SOLOv2': 3,
+    'SOLOv2': 60,
 }
 RESIZE_SCALE_SET = {
     'RCNN',