fusenet.patch

diff -x .git -x .gitignore -r -N -u ./to_onnx.py esanet/src/models/external_code/fusenet-pytorch/to_onnx.py
--- ./to_onnx.py	1970-01-01 01:00:00.000000000 +0100
+++ esanet/fusenet-pytorch/to_onnx.py	2020-12-04 17:56:52.000000000 +0100
@@ -0,0 +1,29 @@
+import os
+import torch
+from models import networks
+
+N_CLASSES = 37
+H = 480
+W = 640
+
+model = networks.FusenetGenerator(N_CLASSES)
+model.eval()
+
+rgb = torch.rand(size=(1, 3, H, W), dtype=torch.float32)
+depth = torch.rand(size=(1, 1, H, W), dtype=torch.float32)
+
+onnx_file_path = os.path.join('fusenet.onnx')
+
+torch.onnx.export(model,
+                  (rgb, depth),
+                  onnx_file_path,
+                  export_params=True,
+                  input_names=['rgb', 'depth'],
+                  output_names=['output'],
+                  do_constant_folding=True,
+                  verbose=False,
+                  opset_version=11
+                  )
+
+# problem: KeyError: 'max_unpool2d' (apparently not supported by onnx)
+# https://github.com/pytorch/pytorch/issues/25088