使用GPT-4o识别云量

gpt4o.py

import os
import base64
import requests
import json

def get_cloudiness(image_path):
    # 读取OpenAI API Key
    api_key = os.getenv('OPENAI_API_KEY')
    
    if not api_key:
        raise ValueError("API key not found. Please set the 'OPENAI_API_KEY' environment variable.")
    
    # 编码图像为base64
    def encode_image(image_path):
        with open(image_path, "rb") as image_file:
            return base64.b64encode(image_file.read()).decode('utf-8')

    base64_image = encode_image(image_path)

    headers = {
        "Content-Type": "application/json",
        "Authorization": f"Bearer {api_key}"
    }

    payload = {
        "model": "gpt-4o",
        "messages": [
            {
                "role": "user",
                "content": [
                    {
                        "type": "text",
                        "text": "图中云量是多少？输出成JSON，在cloud域内输出0-100的整数. 0是晴天，100是阴天。",
                    },
                    {
                        "type": "image_url",
                        "image_url": {"url": f"data:image/jpeg;base64,{base64_image}"}
                    }
                ]
            }
        ],
        "max_tokens": 50,
        "response_format": {"type": "json_object"}
    }

    response = requests.post("https://api.openai.com/v1/chat/completions", headers=headers, json=payload)
    response_data = response.json()

    # 检查响应中是否有云量信息
    if 'choices' in response_data and len(response_data['choices']) > 0:
        content = response_data['choices'][0]['message']['content']
        content = json.loads(content)
        cloudiness = content.get("cloud", None)
        if cloudiness is not None:
            return cloudiness
        else:
            print(content)
            raise ValueError("Cloudiness value not found in the response.")
    else:
        print(response_data)
        raise ValueError("Invalid response from the API.")

# 示例代码
if __name__ == "__main__":
    image_paths = ['Cloudy.jpg', 'Moon.jpg', 'Clear.jpg']
    try:
        for image_path in image_paths:
            cloudiness = get_cloudiness(image_path)
            print(f"{image_path}, Cloudiness: {cloudiness}")
    except Exception as e:
        print(f"Error: {e}")