Add end2end yolov7 onnx export for TensorRT8.0+ and onnxruntime(testi…

…ng now) (WongKinYiu#273)

* Add end2end yolov7 onnx export for TensorRT8.0+

* Add usage in README

* Update yolo.py

* Update yolo.py

* Add tensorrt onnxruntime examples

* Add usage in README

Co-authored-by: Alexey <[email protected]>

README.md

@@ -164,6 +164,7 @@ python export.py --weights yolov7-tiny.pt --grid --include-nms
 ```
 
 **ONNX to TensorRT**
+
 ```shell
 git clone https://github.com/Linaom1214/tensorrt-python.git
 cd tensorrt-python
@@ -197,6 +198,25 @@ Yolov7-mask & YOLOv7-pose
     </a>
 </div>
 
+## End2End Detect for TensorRT8+ and onnxruntime
+
+Usage:
+
+```shell
+# export end2end onnx for TensorRT8+ backend
+python export.py --weights yolov7-d6.pt --grid --end2end --simplify --topk-all 100 --iou-thres 0.65 --conf-thres 0.35
+
+# convert onnx to TensorRT engine
+/usr/src/tensorrt/bin/trtexec --onnx=yolov7-d6.onnx --saveEngine=yolov7-d6.engine --fp16
+
+# export end2end onnx for onnxruntime backend
+python export.py --weights yolov7-d6.pt --grid --end2end --simplify --topk-all 100 --iou-thres 0.65 --conf-thres 0.35 --max-wh 7680
+```
+
+See more information for tensorrt end2end detect in [end2end_tensorrt.ipynb](end2end_tensorrt.ipynb) .
+
+See more information for onnxruntime end2end detect in [end2end_onnxruntime.ipynb](end2end_onnxruntime.ipynb) .
+
 ## Acknowledgements
 
 <details><summary> <b>Expand</b> </summary>