Feat: Detection AI 모델 훈련 데이터 세팅 - S11P21S002-106

This commit is contained in:
김진현 2024-09-08 16:46:52 +09:00
parent 9abf99b992
commit 144d837361
4 changed files with 195 additions and 1 deletions

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@ -1,8 +1,12 @@
from fastapi import APIRouter, HTTPException
from schemas.predict_request import PredictRequest
from schemas.train_request import TrainRequest
from schemas.predict_response import PredictResponse, LabelData
from services.ai_service import load_detection_model
from utils.dataset_utils import split_data
from utils.file_utils import get_dataset_root_path, process_directories, process_image_and_label
from typing import List
from PIL import Image
router = APIRouter()
@router.post("/detection", response_model=List[PredictResponse])
@ -72,4 +76,24 @@ def predict(request: PredictRequest):
})
except Exception as e:
raise HTTPException(status_code=500, detail="label parsing exception: "+str(e))
return response
return response
@router.post("/detection/train")
def train(request: TrainRequest):
# 데이터셋 루트 경로 얻기
dataset_root_path = get_dataset_root_path(request.project_id)
# 디렉토리 생성 및 초기화
process_directories(dataset_root_path)
# 학습 데이터 분류
train_data, val_data = split_data(request.data, request.ratio, request.seed)
# 학습 데이터 처리
for data in train_data:
process_image_and_label(data, dataset_root_path, "train")
# 검증 데이터 처리
for data in val_data:
process_image_and_label(data, dataset_root_path, "val")

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from pydantic import BaseModel
from typing import List, Optional
from schemas.predict_response import LabelData
class TrainDataInfo(BaseModel):
image_url: str
label: LabelData
class TrainRequest(BaseModel):
project_id: int
data: List[TrainDataInfo]
seed: Optional[int] = None # 랜덤 변수 시드
ratio: Optional[float] = 0.8 # 훈련/검증 분할 비율

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import random
from typing import List, Any, Optional
def split_data(data:List[Any], ratio:float, seed:Optional[int] = None):
random.seed(seed)
train_size = int(ratio * len(data))
random.shuffle(data)
random.seed(None)
train_data = data[:train_size]
val_data = data[train_size:]
return train_data, val_data

145
ai/app/utils/file_utils.py Normal file
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import os
import shutil
import yaml
from PIL import Image
from schemas.train_request import TrainDataInfo
def get_dataset_root_path(project_id):
"""프로젝트 ID를 기반으로 데이터셋 루트 경로 반환"""
return os.path.join('test-data', 'projects', str(project_id), 'train_model')
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):
data = {
"train": "train",
"val": "val",
"nc": 80,
"names":
{
0: "person",
1: "bicycle",
2: "car",
3: "motorcycle",
4: "airplane",
5: "bus",
6: "train",
7: "truck",
8: "boat",
9: "traffic light",
10: "fire hydrant",
11: "stop sign",
12: "parking meter",
13: "bench",
14: "bird",
15: "cat",
16: "dog",
17: "horse",
18: "sheep",
19: "cow",
20: "elephant",
21: "bear",
22: "zebra",
23: "giraffe",
24: "backpack",
25: "umbrella",
26: "handbag",
27: "tie",
28: "suitcase",
29: "frisbee",
30: "skis",
31: "snowboard",
32: "sports ball",
33: "kite",
34: "baseball bat",
35: "baseball glove",
36: "skateboard",
37: "surfboard",
38: "tennis racket",
39: "bottle",
40: "wine glass",
41: "cup",
42: "fork",
43: "knife",
44: "spoon",
45: "bowl",
46: "banana",
47: "apple",
48: "sandwich",
49: "orange",
50: "broccoli",
51: "carrot",
52: "hot dog",
53: "pizza",
54: "donut",
55: "cake",
56: "chair",
57: "couch",
58: "potted plant",
59: "bed",
60: "dining table",
61: "toilet",
62: "tv",
63: "laptop",
64: "mouse",
65: "remote",
66: "keyboard",
67: "cell phone",
68: "microwave",
69: "oven",
70: "toaster",
71: "sink",
72: "refrigerator",
73: "book",
74: "clock",
75: "vase",
76: "scissors",
77: "teddy bear",
78: "hair drier",
79: "toothbrush"
}
}
with open(path, 'w') as f:
yaml.dump(data, f)
def process_directories(dataset_root_path: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)
make_yml(os.path.join(dataset_root_path, "dataset.yaml"))
def process_image_and_label(data:TrainDataInfo, dataset_root_path:str, child_path:str):
"""이미지 저장 및 레이블 파일 생성"""
# 이미지 저장
img = Image.open(data.image_url)
# 파일명에서 확장자를 제거하여 img_title과 img_ext 생성
img_title, img_ext = os.path.splitext(os.path.basename(data.image_url))
# 이미지 파일 저장 (확장자를 그대로 사용)
img.save(os.path.join(dataset_root_path, child_path, img_title + img_ext))
# 레이블 -> 학습용 레이블 데이터 파싱(detection)
label = data.label
with open(os.path.join(dataset_root_path, child_path, f"{img_title}.txt"), "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(shape.group_id)) # label Id
train_label.append(str((x1 + x2) / 2)) # 중심 x 좌표
train_label.append(str((y1 + y2) / 2)) # 중심 y 좌표
train_label.append(str(x2 - x1)) # 너비
train_label.append(str(y2 - y1)) # 높이
train_label_txt.write(" ".join(train_label)+"\n")