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I was trying to load yolov7-nms-640.onnx downloaded from YOLOv7 official repo (https://github.com/WongKinYiu/yolov7/) using OpenCV dnn module. But I got an error message

OpenCV(4.6.0) Error: Unspecified error (> Node [NonMaxSuppression@ai.onnx]:(onnx_node!NonMaxSuppression_430) parse error: OpenCV(4.6.0) c:\build\master_winpack-build-win64-vc15\opencv\modules\dnn\src\layer_internals.hpp:110: error: (-2:Unspecified error) Can't create layer "onnx_node!NonMaxSuppression_430" of type "NonMaxSuppression" in function 'cv::dnn::dnn4_v20220524::detail::LayerData::getLayerInstance'
> ) in cv::dnn::dnn4_v20220524::ONNXImporter::handleNode, file c:\build\master_winpack-build-win64-vc15\opencv\modules\dnn\src\onnx\onnx_importer.cpp, line 1040.

Can I load Yolov7 using OpenCV?

Suraj Rao
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Ajesh Mon R
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1 Answers1

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You can't use YOLOv7 with 'NMS processing inside de model' but, you can use YOLOv7 and do postprocessing for getting the final boxes.

Antonio Bejar
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