add img choice

ui_functions.py

@@ -6,10 +6,10 @@ import base64
 import re
 
 def change_img_choices(sample_size):
-    choices = ['图片1(img1)']
+    choices = []
     for i in range(sample_size):
         choices.append(
-            '图片{}(img_{})'.format(i+1,i+1)
+            '图片{}(img{})'.format(i+1,i+1)
         )
     update_choices = gr.update(choices=choices)
     return update_choices