fix(torch): correct output name for onnx classification model

tools/torch/trace_torchvision.py

@@ -37,6 +37,7 @@
 parser.add_argument('--print-models', action='store_true', help="Print all the available models names and exit")
 parser.add_argument('--to-dd-native', action='store_true', help="Prepare the model so that the weights can be loaded on native model with dede")
 parser.add_argument('--to-onnx', action="store_true", help="If specified, export to onnx instead of jit.")
+parser.add_argument('--onnx_out', type=str, default="prob", help="Name of onnx output")
 parser.add_argument('--weights', type=str, help="If not None, these weights will be embedded in the model before exporting")
 parser.add_argument('-a', "--all", action='store_true', help="Export all available models")
 parser.add_argument('-v', "--verbose", action='store_true', help="Set logging level to INFO")
@@ -336,11 +337,13 @@ def get_detection_input(batch_size=1, img_width=224, img_height=224):
         # remove extension
         filename = filename[:-3] + ".onnx"
         example = get_image_input(args.batch_size, args.img_width, args.img_height) 
+
+        # change for detection
         torch.onnx.export(
                 model, example, filename,
                 export_params=True, verbose=args.verbose,
                 opset_version=11, do_constant_folding=True,
-                input_names=["input"], output_names=["output"])
+                input_names=["input"], output_names=[args.onnx_out])
         # dynamic_axes={"input":{0:"batch_size"},"output":{0:"batch_size"}}
     else:
         logging.info("Saving to %s", filename)