Datasets:
Download aux-data/load_data.py from IGNF/FLAIR-1-2: direct link, hf CLI and curl.
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https://huggingface.co/datasets/IGNF/FLAIR-1-2/resolve/refs%2Fpr%2F3/aux-data/load_data.py
- Command line
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hf download hf://datasets/IGNF/FLAIR-1-2@refs/pr/3/aux-data/load_data.py
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curl -L -o load_data.py https://huggingface.co/datasets/IGNF/FLAIR-1-2/resolve/refs%2Fpr%2F3/aux-data/load_data.py
4.92 kB
| def load_data (config: dict): | |
| def get_data_paths(config: dict, path_domains: str, paths_data: dict, matching_dict: dict) -> dict: | |
| #### return data paths | |
| def list_items(path, filter): | |
| for path in Path(path).rglob(filter): | |
| yield path.resolve().as_posix() | |
| ## data paths dict | |
| data = {'PATH_IMG':[], 'PATH_SP_DATA':[], 'SP_COORDS':[], 'PATH_SP_DATES':[], 'PATH_SP_MASKS':[], 'PATH_LABELS':[], 'MTD_AERIAL':[]} | |
| for domain in path_domains: | |
| aerial = sorted(list(list_items(Path(path_data)/domain, 'IMG*.tif')), key=lambda x: int(x.split('_')[-1][:-4])) | |
| sen2sp = sorted(list(list_items(Path(path_data)/domain, '*data.npy'))) | |
| sprods = sorted(list(list_items(Path(path_data)/domain, '*products.txt'))) | |
| smasks = sorted(list(list_items(Path(path_data)/domain, '*masks.npy'))) | |
| labels = sorted(list(list_items(Path(path_data)/domain, 'MSK*.tif')), key=lambda x: int(x.split('_')[-1][:-4])) | |
| coords = [] | |
| for k in aerial: | |
| coords.append(matching_dict[k.split('/')[-1]]) | |
| data['PATH_IMG'] += aerial | |
| data['PATH_SP_DATA'] += sen2sp*len(aerial) | |
| data['PATH_SP_DATES'] += sprods*len(aerial) | |
| data['PATH_SP_MASKS'] += smasks*len(aerial) | |
| data['SP_COORDS'] += coords | |
| data['PATH_LABELS'] += labels | |
| if config['aerial_metadata'] == True: | |
| data = adding_encoded_metadata(config['data']['path_metadata_aerial'], data) | |
| return data | |
| ###### READING CONFIG AND GETTING DATA PATHS | |
| path_data = config['data']['HF_data_path'] | |
| train_domains, val_domains, test_domains = config['data']['domains_train'], config['data']['domains_val'], config['data']['domains_test'] | |
| with open(config['data']['path_sp_centroids'], 'r') as file: | |
| matching_dict = json.load(file) | |
| dict_train = get_data_paths(config, train_domains, path_data, matching_dict) | |
| dict_val = get_data_paths(config, val_domains, path_data, matching_dict) | |
| dict_test = get_data_paths(config, test_domains, path_data, matching_dict) | |
| return dict_train, dict_val, dict_test | |
| def adding_encoded_metadata(path_metadata_file: str, dict_paths: dict, loc_enc_size: int = 32): | |
| """ | |
| For every aerial image in the dataset, get metadata, encode and add to data dict. | |
| """ | |
| #### encode metadata | |
| def coordenc_opt(coords, enc_size=32) -> np.array: | |
| d = int(enc_size/2) | |
| d_i = np.arange(0, d / 2) | |
| freq = 1 / (10e7 ** (2 * d_i / d)) | |
| x,y = coords[0]/10e7, coords[1]/10e7 | |
| enc = np.zeros(d * 2) | |
| enc[0:d:2] = np.sin(x * freq) | |
| enc[1:d:2] = np.cos(x * freq) | |
| enc[d::2] = np.sin(y * freq) | |
| enc[d + 1::2] = np.cos(y * freq) | |
| return list(enc) | |
| def norm_alti(alti: int) -> float: | |
| min_alti = 0 | |
| max_alti = 3164.9099121094 ### MAX DATASET | |
| return [(alti-min_alti) / (max_alti-min_alti)] | |
| def format_cam(cam: str) -> np.array: | |
| return [[1,0] if 'UCE' in cam else [0,1]][0] | |
| def cyclical_enc_datetime(date: str, time: str) -> list: | |
| def norm(num: float) -> float: | |
| return (num-(-1))/(1-(-1)) | |
| year, month, day = date.split('-') | |
| if year == '2018': enc_y = [1,0,0,0] | |
| elif year == '2019': enc_y = [0,1,0,0] | |
| elif year == '2020': enc_y = [0,0,1,0] | |
| elif year == '2021': enc_y = [0,0,0,1] | |
| sin_month = np.sin(2*np.pi*(int(month)-1/12)) ## months of year | |
| cos_month = np.cos(2*np.pi*(int(month)-1/12)) | |
| sin_day = np.sin(2*np.pi*(int(day)/31)) ## max days | |
| cos_day = np.cos(2*np.pi*(int(day)/31)) | |
| h,m=time.split('h') | |
| sec_day = int(h) * 3600 + int(m) * 60 | |
| sin_time = np.sin(2*np.pi*(sec_day/86400)) ## total sec in day | |
| cos_time = np.cos(2*np.pi*(sec_day/86400)) | |
| return enc_y+[norm(sin_month),norm(cos_month),norm(sin_day),norm(cos_day),norm(sin_time),norm(cos_time)] | |
| with open(path_metadata_file, 'r') as f: | |
| metadata_dict = json.load(f) | |
| for img in dict_paths['PATH_IMG']: | |
| curr_img = img.split('/')[-1][:-4] | |
| enc_coords = coordenc_opt([metadata_dict[curr_img]["patch_centroid_x"], metadata_dict[curr_img]["patch_centroid_y"]], enc_size=loc_enc_size) | |
| enc_alti = norm_alti(metadata_dict[curr_img]["patch_centroid_z"]) | |
| enc_camera = format_cam(metadata_dict[curr_img]['camera']) | |
| enc_temporal = cyclical_enc_datetime(metadata_dict[curr_img]['date'], metadata_dict[curr_img]['time']) | |
| mtd_enc = enc_coords+enc_alti+enc_camera+enc_temporal | |
| dict_paths['MTD_AERIAL'].append(mtd_enc) | |
| return dict_paths |