使用Autodesk Forge的Reality Capture API生成的高程图Geotiff包含了地理坐标信息和高程数据。

以下是一个使用Reality Capture API生成高程图Geotiff的Python示例代码：

import requests
import json

# 获取访问令牌
def get_access_token(client_id, client_secret):
    url = "https://developer.api.autodesk.com/authentication/v1/authenticate"

    payload = {
        "client_id": client_id,
        "client_secret": client_secret,
        "grant_type": "client_credentials",
        "scope": "data:read"
    }

    response = requests.post(url, data=payload)
    return response.json()["access_token"]

# 使用Reality Capture API生成高程图
def generate_elevation_map(file_path, access_token):
    url = "https://developer.api.autodesk.com/photo-to-3d/v1/file"
    
    headers = {
        "Authorization": f"Bearer {access_token}",
        "Content-Type": "application/json"
    }
    
    payload = {
        "photosceneid": "your_photoscene_id",
        "generate_elevation": True
    }
    
    with open(file_path, "rb") as file:
        files = {"file": file}
        response = requests.post(url, headers=headers, data=json.dumps(payload), files=files)
    
    return response.json()

# 下载生成的Geotiff文件
def download_geotiff(file_url, save_path):
    response = requests.get(file_url)
    
    with open(save_path, "wb") as file:
        file.write(response.content)

# 主函数
def main():
    client_id = "your_client_id"
    client_secret = "your_client_secret"
    file_path = "path_to_your_image.jpg"
    save_path = "path_to_save_geotiff.tif"
    
    access_token = get_access_token(client_id, client_secret)
    response = generate_elevation_map(file_path, access_token)
    download_geotiff(response["elevationmap_geotiff_url"], save_path)

if __name__ == "__main__":
    main()

在上述代码中，需要替换以下变量：

• client_id：你的Autodesk Forge应用程序的Client ID。
• client_secret：你的Autodesk Forge应用程序的Client Secret。
• file_path：要生成高程图的图像文件路径。
• save_path：保存生成的Geotiff文件的路径。

该代码会自动使用Reality Capture API生成高程图Geotiff文件，并将其保存到指定路径。