diff --git a/odm_preprocess.py b/odm_preprocess.py
index 392ac03..2c7b2de 100644
--- a/odm_preprocess.py
+++ b/odm_preprocess.py
@@ -122,7 +122,7 @@ class ImagePreprocessor:
         free_space = disk_usage.free
 
         # 计算所需空间（输入大小的1.5倍）
-        required_space = input_size * 1.5
+        required_space = input_size * 12
 
         if free_space < required_space:
             error_msg = (