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import numpy as np | ||
import pickle as pkl | ||
from pathlib import Path | ||
import tqdm | ||
import copy | ||
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def create_integrated_db_with_infos(args, root_path): | ||
""" | ||
Args: | ||
args: | ||
Returns: | ||
""" | ||
# prepare | ||
db_infos_path = root_path / args.src_db_info | ||
db_info_global_path = str(db_infos_path)[:-4] + '_global' + '.pkl' | ||
global_db_path = root_path / (args.new_db_name + '.npy') | ||
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db_infos = pkl.load(open(db_infos_path, 'rb')) | ||
db_info_global = copy.deepcopy(db_infos) | ||
start_idx = 0 | ||
global_db_list = [] | ||
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for category, class_info in db_infos.items(): | ||
print('>>> Start processing %s' % category) | ||
for idx, info in tqdm.tqdm(enumerate(class_info), total=len(class_info)): | ||
obj_path = root_path / info['path'] | ||
obj_points = np.fromfile(str(obj_path), dtype=np.float32).reshape( | ||
[-1, args.num_point_features]) | ||
num_points = obj_points.shape[0] | ||
db_info_global[category][idx]['global_data_offset'] = (start_idx, start_idx + num_points) | ||
start_idx += num_points | ||
global_db_list.append(obj_points) | ||
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global_db = np.concatenate(global_db_list) | ||
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with open(global_db_path, 'wb') as f: | ||
np.save(f, global_db) | ||
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with open(db_info_global_path, 'wb') as f: | ||
pkl.dump(db_info_global, f) | ||
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print(f"Successfully create integrated database at {global_db_path}") | ||
print(f"Successfully create integrated database info at {db_info_global_path}") | ||
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return db_info_global, global_db | ||
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def verify(info, whole_db, root_path, num_point_features): | ||
obj_path = root_path / info['path'] | ||
obj_points = np.fromfile(str(obj_path), dtype=np.float32).reshape([-1, num_point_features]) | ||
mean_origin = obj_points.mean() | ||
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start_idx, end_idx = info['global_data_offset'] | ||
obj_points_new = whole_db[start_idx:end_idx] | ||
mean_new = obj_points_new.mean() | ||
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assert mean_origin == mean_new | ||
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print("Verification pass!") | ||
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if __name__ == '__main__': | ||
import argparse | ||
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parser = argparse.ArgumentParser(description='arg parser') | ||
parser.add_argument('--root_path', type=str, default=None, help='specify the root path') | ||
parser.add_argument('--src_db_info', type=str, default='waymo_processed_data_v0_5_0_waymo_dbinfos_train_sampled_1.pkl', help='') | ||
parser.add_argument('--new_db_name', type=str, default='waymo_processed_data_v0_5_0_gt_database_train_sampled_1_global', help='') | ||
parser.add_argument('--num_point_features', type=int, default=5, | ||
help='number of feature channels for points') | ||
parser.add_argument('--class_name', type=str, default='Vehicle', | ||
help='category name for verification') | ||
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args = parser.parse_args() | ||
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root_path = Path(args.root_path) | ||
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db_infos_global, whole_db = create_integrated_db_with_infos(args, root_path) | ||
# simple verify | ||
verify(db_infos_global[args.class_name][0], whole_db, root_path, args.num_point_features) |
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