Fix obj365 CACasacdeRCNN config and doc (#219)

* fix obj365 cascade rcnn config
* fix obj365 cascade rcnn doc

configs/obj365/cascade_rcnn_dcnv2_se154_vd_fpn_gn_cas.yml

@@ -11,7 +11,7 @@ metric: COCO
 num_classes: 501
 
 CascadeRCNN:
-  backbone: ResNet
+  backbone: SENet
   fpn: FPN
   rpn_head: FPNRPNHead
   roi_extractor: FPNRoIAlign
@@ -122,7 +122,7 @@ TrainReader:
     image_dir: train
   sample_transforms:
   - !DecodeImage
-    to_rgb: False
+    to_rgb: True
   - !RandomFlipImage
     is_mask_flip: true
     is_normalized: false
@@ -197,7 +197,7 @@ EvalReader:
     image_dir: val
   sample_transforms:
   - !DecodeImage
-    to_rgb: False
+    to_rgb: True
   - !NormalizeImage
     is_channel_first: false
     is_scale: False
@@ -230,7 +230,7 @@ TestReader:
     anno_path: dataset/obj365/annotations/val.json
   sample_transforms:
   - !DecodeImage
-    to_rgb: False
+    to_rgb: True
   - !NormalizeImage
     is_channel_first: false
     is_scale: False

docs/featured_model/CACascadeRCNN.md

@@ -38,7 +38,7 @@ python tools/train.py -c configs/obj365/cascade_rcnn_dcnv2_se154_vd_fpn_gn.yml
 
 |        模型         | 验证集 mAP |                           下载链接                           |
 | :-----------------: | :--------: | :----------------------------------------------------------: |
-| CACascadeRCNN SE154 |    31.7    | [model](https://paddlemodels.bj.bcebos.com/object_detection/cascade_rcnn_dcnv2_se154_vd_fpn_gn_cas_obj365.tar) |
+| CACascadeRCNN SE154 |    31.6    | [model](https://paddlemodels.bj.bcebos.com/object_detection/cascade_rcnn_dcnv2_se154_vd_fpn_gn_cas_obj365.tar) |
 
 ## 模型效果