170 lines
5.9 KiB
Python
170 lines
5.9 KiB
Python
from fastapi import FastAPI, HTTPException
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from pydantic import BaseModel
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from typing import List, Optional
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import cv2
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from ultralytics import YOLO
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import requests
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import numpy as np
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import time
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from contextlib import asynccontextmanager
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import logging
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import os
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from logging.handlers import RotatingFileHandler
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from urllib.parse import urlparse
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# 设置日志配置
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log_dir = "logs"
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os.makedirs(log_dir, exist_ok=True)
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# 配置日志
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log_file = os.path.join(log_dir, "app.log")
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logger = logging.getLogger("Sishu_AI_Annotation")
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logger.setLevel(logging.DEBUG)
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# 设置文件回滚，每个日志文件最大10MB，最多保留5个文件
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handler = RotatingFileHandler(log_file, maxBytes=10 * 1024 * 1024, backupCount=5)
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formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
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handler.setFormatter(formatter)
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logger.addHandler(handler)
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@asynccontextmanager
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async def app_lifespan(app: FastAPI):
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"""定义应用的生命周期事件"""
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global model
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logger.info("正在加载模型...")
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model = YOLO("./model/sishu_thin_24_12.onnx") # 加载YOLO模型
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logger.info("模型加载完成")
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yield # 生命周期的运行阶段
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# 在这里可以执行任何必要的清理操作
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# FastAPI应用
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app = FastAPI(lifespan=app_lifespan)
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# 定义请求参数模型
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class AnnotateRequest(BaseModel):
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image_urls: List[str] # 图片的网络路径列表
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target_labels: Optional[List[str]] = None # 标签列表
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conf_threshold: Optional[float] = 0.3 # 模型推理的阈值
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# 为每个标签生成固定颜色（红色，黄色，蓝色，绿色）
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def generate_label_colors(labels):
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colors = {
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"red": (255, 0, 0),
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"yellow": (255, 255, 0),
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"blue": (0, 0, 255),
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"green": (0, 255, 0),
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}
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label_colors = {}
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color_list = list(colors.values())
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for i, label in enumerate(labels):
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label_colors[label] = color_list[i % len(color_list)] # 循环分配颜色
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return label_colors
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# 通过URL加载图像
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def load_image_from_url(image_url):
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try:
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response = requests.get(image_url)
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response.raise_for_status()
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image_array = np.frombuffer(response.content, np.uint8)
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image = cv2.imdecode(image_array, cv2.IMREAD_COLOR)
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if image is None:
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logger.error(f"无法解码图像：{image_url}")
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return None
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return image
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except requests.exceptions.RequestException as e:
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logger.error(f"请求失败: {e}")
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return None
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# 对图像进行智能标注
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def annotate_images(model, image_urls, target_labels=None, conf_threshold=0.1):
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annotation_results = {}
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all_labels = model.names.values()
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label_colors = generate_label_colors(all_labels)
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for image_url in image_urls:
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# 假设 image_path 可能是一个 URL 或者本地路径
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if image_url.startswith("http"):
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# 如果是URL，加载在线图片
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start_time = time.time() # 记录开始时间
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image = load_image_from_url(image_url)
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end_time = time.time() # 记录结束时间
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load_time = end_time - start_time
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logger.debug(f"加载图像 {image_url} 的时间: {load_time:.3f} 秒")
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else:
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# 如果是本地路径，使用cv2读取
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image = cv2.imread(image_url)
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if image is None:
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logger.error(f"无法读取图像：{image_url}")
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continue
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image_height, image_width = image.shape[:2]
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results = model(image, task="detect", conf=conf_threshold)
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image_annotations = []
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path = urlparse(image_url).path
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file_name = os.path.basename(path)
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for result in results:
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for box in result.boxes:
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x1, y1, x2, y2 = map(int, box.xyxy[0])
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label = model.names[int(box.cls[0])]
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conf = box.conf[0]
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if target_labels is None or label in target_labels:
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color = label_colors[label]
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cv2.rectangle(image, (x1, y1), (x2, y2), color, 2)
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label_text = f"{label} {conf:.2f}"
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cv2.putText(image, label_text, (x1, y1 - 10), cv2.FONT_HERSHEY_SIMPLEX, 0.6, color, 2)
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normalized_x = x1 / image_width
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normalized_y = y1 / image_height
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normalized_width = (x2 - x1) / image_width
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normalized_height = (y2 - y1) / image_height
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annotation = {
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"label": label,
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"x": normalized_x * 100,
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"y": normalized_y * 100,
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"width": normalized_width * 100,
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"height": normalized_height * 100,
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}
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image_annotations.append(annotation)
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annotation_results[image_url] = image_annotations if image_annotations else [] # 保存标注后的图像
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output_path = os.path.join("./output", os.path.basename(image_url))
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cv2.imwrite(output_path, image)
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logger.info("图片路径：{}".format(output_path))
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return annotation_results
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# FastAPI端点 - 图像标注接口
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@app.post("/annotate")
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async def annotate(request: AnnotateRequest):
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try:
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logger.info("开始处理请求: %s", request.dict())
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annotation_results = annotate_images(
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model=model,
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image_urls=request.image_urls,
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target_labels=request.target_labels,
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conf_threshold=request.conf_threshold
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)
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logger.info("请求处理完成")
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logger.info("annotations:{}", annotation_results)
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return {"annotations": annotation_results}
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except Exception as e:
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logger.error(f"发生错误: {e}")
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raise HTTPException(status_code=500, detail=str(e))
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# 示例用法: 调用接口时会返回JSON格式的标注结果，包含图片的路径和标注信息。
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