pt2rknn.py

import sys
from rknn.api import RKNN

DATASET_PATH = './dataset.txt'
DEFAULT_RKNN_PATH = './output.rknn'
DEFAULT_QUANT = True

def parse_arg():
    if len(sys.argv) < 3:
        print("Usage: python3 {} onnx_model_path [platform] [dtype(optional)] [output_rknn_path(optional)]".format(sys.argv[0]));
        print("       platform choose from [rk3562,rk3566,rk3568,rk3588,rk1808,rv1109,rv1126]")
        print("       dtype choose from [i8, fp] for [rk3562,rk3566,rk3568,rk3588]")
        print("       dtype choose from [u8, fp] for [rk1808,rv1109,rv1126]")
        exit(1)

    model_path = sys.argv[1]
    platform = sys.argv[2]

    do_quant = DEFAULT_QUANT
    if len(sys.argv) > 3:
        model_type = sys.argv[3]
        if model_type not in ['i8', 'u8', 'fp']:
            print("ERROR: Invalid model type: {}".format(model_type))
            exit(1)
        elif model_type in ['i8', 'u8']:
            do_quant = True
        else:
            do_quant = False

    if len(sys.argv) > 4:
        output_path = sys.argv[4]
    else:
        output_path = DEFAULT_RKNN_PATH

    return model_path, platform, do_quant, output_path

if __name__ == '__main__':
    model_path, platform, do_quant, output_path = parse_arg()

    # Create RKNN object
    rknn = RKNN(verbose=False)

    # Pre-process config
    print('--> Config model')
    rknn.config(mean_values=[[0, 0, 0]], std_values=[
                    [255, 255, 255]], target_platform=platform)
    print('done')

    # 加载Pytorch模型，如果是使用airockchip/ultralytics_yolov8的main分支，将导入onnx模型
    print('--> Loading model')
    #ret = rknn.load_onnx(model=model_path)
    ret = rknn.load_pytorch(model=model_path, input_size_list=[[1, 3, 640, 640]])
    if ret != 0:
        print('Load model failed!')
        exit(ret)
    print('done')

    # Build model
    print('--> Building model')
    ret = rknn.build(do_quantization=do_quant, dataset=DATASET_PATH)
    if ret != 0:
        print('Build model failed!')
        exit(ret)
    print('done')

    # Export rknn model
    print('--> Export rknn model')
    ret = rknn.export_rknn(output_path)
    if ret != 0:
        print('Export rknn model failed!')
        exit(ret)
    print('done')

    # 精度分析,,输出目录./snapshot
    #print('--> Accuracy analysis')
    #ret = rknn.accuracy_analysis(inputs=['./subset/000000052891.jpg'])
    #if ret != 0:
    #    print('Accuracy analysis failed!')
    #    exit(ret)
    #print('done')

    # Release
    rknn.release()