feat（新功能）:

fix（修复bug）:
docs（文档变更）:
refactor（重构）:
test(增加测试): 旧版product 测试

app/service/generate_image/service_generate_product_image.py

@@ -331,18 +331,33 @@ def infer_cancel(tasks_id):
 
 def pre_processing_image(image_url):
     image = oss_get_image(bucket=image_url.split('/')[0], object_name=image_url[image_url.find('/') + 1:], data_type="PIL")
-    # 调整图片高度为768像素，保持宽高比
-    width, height = image.size
-    new_height = 768
-    new_width = int(width * (new_height / height))
+    # 目标图片的尺寸
+    target_width = 512
+    target_height = 768
+
+    # 原始图片的尺寸
+    original_width, original_height = image.size
+
+    # 计算宽度和高度的缩放比例
+    width_ratio = target_width / original_width
+    height_ratio = target_height / original_height
+
+    # 选择较小的缩放比例，确保图片能完整放入目标图片中
+    scale_ratio = min(width_ratio, height_ratio)
+
+    # 计算调整后的尺寸
+    new_width = int(original_width * scale_ratio)
+    new_height = int(original_height * scale_ratio)
+
+    # 调整图片大小
     resized_image = image.resize((new_width, new_height))
 
     # 创建一个 512x768 的透明图片
-    result_image = Image.new("RGBA", (512, 768), (255, 255, 255, 255))
+    result_image = Image.new("RGBA", (target_width, target_height), (255, 255, 255, 0))
 
     # 计算需要粘贴的位置，使图片居中
-    x_offset = (512 - new_width) // 2
-    y_offset = 0
+    x_offset = (target_width - new_width) // 2
+    y_offset = (target_height - new_height) // 2
 
     # 将调整大小后的图片粘贴到透明图片上
     result_image.paste(resized_image, (x_offset, y_offset), mask=resized_image.split()[3])
@@ -371,8 +386,8 @@ if __name__ == '__main__':
         tasks_id="123-89",
         # prompt="",
         image_strength=0.7,
-        prompt="The best quality, masterpiece, real image.,high quality clothing details,8K realistic,HDR",
-        image_url="aida-results/result_40c7924e-e220-11ef-8ea2-0242ac150003.png",
+        prompt=" The best quality, masterpiece, real image.Outwear,high quality clothing details,8K realistic,HDR",
+        image_url="aida-results/result_40b1a2fe-e220-11ef-9bfa-0242ac150003.png",
         product_type="single"
     )
     server = GenerateProductImage(rd)