add ceil_mode and with_last_pool to vgg

mmcv/cnn/vgg.py

@@ -16,7 +16,8 @@ def conv3x3(in_planes, out_planes, dilation=1):
         dilation=dilation)
 
 
-def make_vgg_layer(inplanes, planes, num_blocks, dilation=1, with_bn=False):
+def make_vgg_layer(inplanes, planes, num_blocks, dilation=1, with_bn=False,
+                   ceil_mode=False):
     layers = []
     for _ in range(num_blocks):
         layers.append(conv3x3(inplanes, planes, dilation))
@@ -24,7 +25,7 @@ def make_vgg_layer(inplanes, planes, num_blocks, dilation=1, with_bn=False):
             layers.append(nn.BatchNorm2d(planes))
         layers.append(nn.ReLU(inplace=True))
         inplanes = planes
-    layers.append(nn.MaxPool2d(kernel_size=2, stride=2))
+    layers.append(nn.MaxPool2d(kernel_size=2, stride=2, ceil_mode=ceil_mode))
 
     return layers
 
@@ -62,7 +63,9 @@ class VGG(nn.Module):
                  out_indices=(0, 1, 2, 3, 4),
                  frozen_stages=-1,
                  bn_eval=True,
-                 bn_frozen=False):
+                 bn_frozen=False,
+                 ceil_mode=False,
+                 with_last_pool=True):
         super(VGG, self).__init__()
         if depth not in self.arch_settings:
             raise KeyError('invalid depth {} for vgg'.format(depth))
@@ -92,11 +95,14 @@ class VGG(nn.Module):
                 planes,
                 num_blocks,
                 dilation=dilation,
-                with_bn=with_bn)
+                with_bn=with_bn,
+                ceil_mode=ceil_mode)
             vgg_layers.extend(vgg_layer)
             self.inplanes = planes
             self.range_sub_modules.append([start_idx, end_idx])
             start_idx = end_idx
+        if not with_last_pool:
+            vgg_layers.pop(-1)
         self.module_name = 'features'
         self.add_module(self.module_name, nn.Sequential(*vgg_layers))