58 lines
2.1 KiB
Python
58 lines
2.1 KiB
Python
# 该脚本用来加载模型并导出为torchscript模型（去除部分后处理）
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import sys
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sys.path.append(R"../0_yolov5_7.0")
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import argparse
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import os
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import cv2
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import torch
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import numpy as np
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from utils.augmentations import letterbox
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from models.experimental import attempt_load
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from models.yolo import Detect
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# 修改前向，去除前向中后处理操作
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def new_forward(self, x):
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for i in range(self.nl):
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x[i] = self.m[i](x[i]) # conv
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return x
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def save_trace_model(img_path, model_path, test_size):
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h, w = opt.imgsz[0],opt.imgsz[1]
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dumyin = torch.randn(1,3,h, w,dtype=torch.float32)
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# 加载模型
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model = attempt_load(model_path)
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Detect.forward = new_forward # replace the forward of Detect
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# 保存 torchscript model
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y = torch.jit.trace(model, dumyin ,strict=False)
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torch.jit.save(y, TRACE_PATH)
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print('TorchScript export success, saved in %s' % TRACE_PATH)
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# plin
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torch.jit.save(torch.jit.trace(model,torch.randn(1,3,352,640,dtype=torch.float32)),"../2_compile/fmodel/yolov5s_352x640.pt")
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if __name__ == "__main__":
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parser = argparse.ArgumentParser()
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parser.add_argument('--model_pt', type=str, default=R'../weights/yolov5s.pt', help='model path')
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parser.add_argument('--trace_path', type=str, default=R"../2_compile/fmodel/yolov5s_640x640.pt", help='trace path')
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parser.add_argument('--source', type=str, default=R'../0_yolov5_7.0/data/images/bus.jpg', help='image path')
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parser.add_argument('--imgsz', nargs='+', type=int, default=[640], help='image size')
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opt = parser.parse_args()
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TRACE_PATH = opt.trace_path
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opt.imgsz *= 2 if len(opt.imgsz) == 1 else 1
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test_size = tuple(opt.imgsz)
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if os.path.isfile(opt.source):
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save_trace_model(opt.source, opt.model_pt, test_size)
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elif os.path.isdir(opt.source):
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image_list = os.listdir(opt.source)
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for image_file in image_list:
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image_path = opt.source + "//" + image_file
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save_trace_model(image_path, opt.model_pt, test_size)
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