BrandAnalysis/utils/utils.py

import base64
from io import BytesIO
from PIL import Image, features
import pillow_avif
import requests

def image_to_base(image_path):
    with open(image_path, 'rb') as image_file:
        image_base = base64.b64encode(image_file.read()).decode('utf-8')
    return image_base

def pil_image_to_base64(image, format="JPEG"):
    """将图像转换为Base64的编码字符串"""
    buffered = BytesIO()
    image.save(buffered, format=format)
    return base64.b64encode(buffered.getvalue()).decode("utf-8")

def load_image_from_url(image_url):
    """根据url加载图像"""
    headers = {
        "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36",
        "Referer": "https://www.aliexpress.com/",
        "Accept-Language": "en-US,en;q=0.9",
    }
    response = requests.get(image_url, headers=headers)
    image = Image.open(BytesIO(response.content))
    return image

def load_image_from_cos(cos_url):
    """下载腾讯云COS的AVIF文件，并转换为可处理的图像数据"""
    try:
        response = requests.get(cos_url)
        response.raise_for_status() # 检查请求是否成功
        
        img = Image.open(BytesIO(response.content))
        return img
    except requests.exceptions.RequestException as e:
        raise requests.exceptions.RequestException(f"下载失败：{e}")
    except Exception as e:
        raise ValueError(f"解析AVIF失败：{e}")
            

if __name__ == "__main__":
    # url = 'https://img.alicdn.com/imgextra/i1/2212526294503/O1CN01P0qxZL1j8QU5cC4ed_!!2212526294503.jpg_q75.jpg_.webp'
    # image = load_image_from_url(url)
    # image.save('./product.png')  # 保存为PNG
    
    cos_url = "https://dev-govern-private-1251740668.cos.ap-guangzhou.myqcloud.com/private/20250723/b9c411c4c2514367afc4dd4ad199eb0d.webp?q-sign-algorithm=sha1&q-ak=AKIDIWXN4kqgpiMm0z4T5VgcKn4KSP8cZwnO&q-sign-time=1753320960%3B1753328160&q-key-time=1753320960%3B1753328160&q-header-list=host&q-url-param-list=&q-signature=f6223c1353c1c97c8e42355625dec94967c9c2f6"
    image = load_image_from_cos(cos_url)
    image.save('./product.png')