worlabel/ai/app/utils/file_utils.py

150 lines
6.0 KiB
Python

import os
import shutil
import yaml
from PIL import Image
from schemas.train_request import TrainDataInfo
from schemas.predict_response import LabelData
import urllib
import json
def get_dataset_root_path(project_id):
"""데이터셋 루트 절대 경로 반환"""
return os.path.join(os.getcwd(), 'resources', 'projects', str(project_id), "train")
def make_dir(path:str, init: bool):
"""
path : 디렉토리 경로
init : 폴더를 초기화 할지 여부
"""
if (os.path.exists(path) and init):
shutil.rmtree(path)
os.makedirs(path, exist_ok=True)
def make_yml(path:str, model_categories):
data = {
"train": f"{path}/train",
"val": f"{path}/val",
"nc": len(model_categories),
"names": model_categories
}
with open(os.path.join(path, "dataset.yaml"), 'w') as f:
yaml.dump(data, f)
def process_directories(dataset_root_path:str, model_categories:list[str]):
"""학습을 위한 디렉토리 생성"""
make_dir(dataset_root_path, init=False)
make_dir(os.path.join(dataset_root_path, "train"), init=True)
make_dir(os.path.join(dataset_root_path, "val"), init=True)
if os.path.exists(os.path.join(dataset_root_path, "result")):
shutil.rmtree(os.path.join(dataset_root_path, "result"))
make_yml(dataset_root_path, model_categories)
def process_image_and_label(data:TrainDataInfo, dataset_root_path:str, child_path:str, label_converter:dict[int,int]):
"""이미지 저장 및 레이블 파일 생성"""
# 이미지 url로부터 파일명 분리
img_name = data.image_url.split('/')[-1]
img_path = os.path.join(dataset_root_path,child_path,img_name)
# url로부터 이미지 다운로드
urllib.request.urlretrieve(data.image_url, img_path)
# 파일명에서 확장자를 제거하여 img_title을 얻는다
img_title = os.path.splitext(os.path.basename(img_path))[0]
# 레이블 파일 경로
label_path = os.path.join(dataset_root_path, child_path, f"{img_title}.txt")
# 레이블 객체 불러오기
label = json.loads(urllib.request.urlopen(data.data_url).read())
# 레이블 -> 학습용 레이블 데이터 파싱 후 생성
if label['task_type'] == "det":
create_detection_train_label(label, label_path, label_converter)
elif label["task_type"] == "seg":
create_segmentation_train_label(label, label_path, label_converter)
def create_detection_train_label(label:dict, label_path:str, label_converter:dict[int, int]):
with open(label_path, "w") as train_label_txt:
for shape in label["shapes"]:
train_label = []
x1 = shape["points"][0][0]
y1 = shape["points"][0][1]
x2 = shape["points"][1][0]
y2 = shape["points"][1][1]
train_label.append(str(label_converter[shape["group_id"]])) # label Id
train_label.append(str((x1 + x2) / 2 / label["imageWidth"])) # 중심 x 좌표
train_label.append(str((y1 + y2) / 2 / label["imageHeight"])) # 중심 y 좌표
train_label.append(str((x2 - x1) / label["imageWidth"])) # 너비
train_label.append(str((y2 - y1) / label["imageHeight"] )) # 높이
train_label_txt.write(" ".join(train_label)+"\n")
def create_segmentation_train_label(label:dict, label_path:str, label_converter:dict[int, int]):
with open(label_path, "w") as train_label_txt:
for shape in label["shapes"]:
train_label = []
train_label.append(str(label_converter[shape["group_id"]])) # label Id
for x, y in shape["points"]:
train_label.append(str(x / label["imageWidth"]))
train_label.append(str(y / label["imageHeight"]))
train_label_txt.write(" ".join(train_label)+"\n")
def join_path(path, *paths):
"""os.path.join()과 같은 기능, os import 하기 싫어서 만듦"""
return os.path.join(path, *paths)
def get_model_keys(project_id:int):
path = os.path.join("resources","projects",str(project_id), "models")
if not os.path.exists(path):
raise FileNotFoundError()
files = os.listdir(path)
return files
def delete_file(path):
if not os.path.exists(path):
raise FileNotFoundError()
os.remove(path)
def save_file(path, file):
# 경로에서 디렉토리 부분만 추출 (파일명을 제외한 경로)
dir_path = os.path.dirname(path)
os.makedirs(dir_path, exist_ok=True)
with open(path, "wb") as buffer:
shutil.copyfileobj(file.file, buffer)
def get_file_name(path):
if not os.path.exists(path):
raise FileNotFoundError()
return os.path.basename(path)
def process_directories_in_cls(dataset_root_path:str, model_categories:list[str]):
"""classification 학습을 위한 디렉토리 생성"""
make_dir(dataset_root_path, init=False)
for category in model_categories:
make_dir(os.path.join(dataset_root_path, "train", category), init=True)
make_dir(os.path.join(dataset_root_path, "test", category), init=True)
if os.path.exists(os.path.join(dataset_root_path, "result")):
shutil.rmtree(os.path.join(dataset_root_path, "result"))
def process_image_and_label_in_cls(data:TrainDataInfo, dataset_root_path:str, child_path:str):
"""이미지 저장 및 레이블 파일 생성"""
# 이미지 url로부터 파일명 분리
img_name = data.image_url.split('/')[-1]
# 레이블 객체 불러오기
label = json.loads(urllib.request.urlopen(data.data_url).read())
label_name = label["shapes"][0]["label"]
label_path = os.path.join(dataset_root_path,child_path,label_name)
# url로부터 이미지 다운로드
if os.path.exists(label_path):
urllib.request.urlretrieve(data.image_url, os.path.join(label_path, img_name))
else:
# raise FileNotFoundError("failed download")
print("Not Found Label Category. Failed Download")
# 레이블 데이터 중에서 프로젝트 카테고리에 해당되지않는 데이터가 있는 경우 처리 1. 에러 raise 2. 무시(+ warning)