!11125 fix bugs of wrong height and width of ssd and change training config

From: @c_34
Reviewed-by: @wuxuejian,@zhouyaqiang0,@oacjiewen
Signed-off-by: @oacjiewen

model_zoo/official/cv/ssd/src/anchor_generator.py

@@ -39,7 +39,7 @@ class GridAnchorGenerator:
         scales_grid = scales_grid.reshape([-1])
         aspect_ratios_grid = aspect_ratios_grid.reshape([-1])
 
-        feature_size = [self.image_shape[0] / step, self.image_shape[0] / step]
+        feature_size = [self.image_shape[0] / step, self.image_shape[1] / step]
         grid_height, grid_width = feature_size
 
         base_size = np.array([self.scale * step, self.scale * step]).astype(np.float32)

model_zoo/official/cv/ssd/src/dataset.py

@@ -122,7 +122,7 @@ def preprocess_fn(img_id, image, box, is_training):
     def _data_aug(image, box, is_training, image_size=(300, 300)):
         """Data augmentation function."""
         ih, iw, _ = image.shape
-        w, h = image_size
+        h, w = image_size
 
         if not is_training:
             return _infer_data(image, image_size)

model_zoo/official/cv/ssd/src/ssd.py

@@ -356,19 +356,16 @@ class SsdMobilenetV1Fpn(nn.Cell):
     Examples:backbone
          SsdMobilenetV1Fpn(config, True).
     """
-    def __init__(self, config, is_training=True):
+    def __init__(self, config):
         super(SsdMobilenetV1Fpn, self).__init__()
         self.multi_box = WeightSharedMultiBox(config)
-        self.is_training = is_training
-        if not is_training:
-            self.activation = P.Sigmoid()
-
+        self.activation = P.Sigmoid()
         self.feature_extractor = mobilenet_v1_fpn(config)
 
     def construct(self, x):
         features = self.feature_extractor(x)
         pred_loc, pred_label = self.multi_box(features)
-        if not self.is_training:
+        if not self.training:
             pred_label = self.activation(pred_label)
         pred_loc = F.cast(pred_loc, mstype.float32)
         pred_label = F.cast(pred_label, mstype.float32)