Problem has been solved. I used the onnx file prvided in SiamTrackers/NanoTrack/models/nanotrackv2 at master · HonglinChu/SiamTrackers · GitHub
, but nanotrackerv3 rather than nanotrackv2 (since it’s said v3 could achieve better perfomance), things went good when I submissively used nanotrackerv2.
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