feat: 新增42号人脸特征与72号B端关键点接口

scripts/face_ratios_test_server.py

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+"""Local-only ratio experiment: python -m uvicorn scripts.face_ratios_test_server:app --port 8190."""
+import threading
+import base64
+from pathlib import Path
+
+import cv2
+from fastapi import FastAPI, UploadFile, File, HTTPException
+from fastapi.responses import FileResponse
+from fastapi.staticfiles import StaticFiles
+
+from face_analysis.face_ratios import detect_framed_ratio_points
+from face_analysis.special_points import NoFaceError, NonFrontalError
+
+static_dir = Path(__file__).resolve().parents[1] / "static"
+cases_dir = static_dir / "face_ratio_cases"
+cases_dir.mkdir(exist_ok=True)
+app = FastAPI()
+app.mount("/cases", StaticFiles(directory=cases_dir, html=True), name="cases")
+lock = threading.Lock()
+
+
+@app.get("/")
+def index():
+    return FileResponse(static_dir / "test_face_ratios.html")
+
+
+@app.post("/detect")
+def detect(image_file: UploadFile = File(...)):
+    raw = image_file.file.read(20 * 1024 * 1024 + 1)
+    if len(raw) > 20 * 1024 * 1024:
+        raise HTTPException(413, "图片不能超过20MB")
+    from hairline.framing import decode_portrait
+    image = decode_portrait(raw)
+    if image is None:
+        raise HTTPException(400, "无法读取图片")
+    try:
+        with lock:
+            image, data = detect_framed_ratio_points(image)
+            data["input_image_base64"] = (
+                "data:image/png;base64," + base64.b64encode(cv2.imencode(".png", image)[1]).decode()
+            )
+            return data
+    except (NoFaceError, NonFrontalError, ValueError) as exc:
+        raise HTTPException(422, str(exc)) from exc