fix issue #2086

ppocr/utils/utility.py

@@ -52,12 +52,14 @@ def get_image_file_list(img_file):
         raise Exception("not found any img file in {}".format(img_file))
 
     img_end = {'jpg', 'bmp', 'png', 'jpeg', 'rgb', 'tif', 'tiff', 'gif', 'GIF'}
-    if os.path.isfile(img_file) and imghdr.what(img_file) in img_end:
+    if os.path.isfile(img_file) and os.path.splitext(img_file)[-1][1:].lower(
+    ) in img_end:
         imgs_lists.append(img_file)
     elif os.path.isdir(img_file):
         for single_file in os.listdir(img_file):
             file_path = os.path.join(img_file, single_file)
-            if os.path.isfile(file_path) and imghdr.what(file_path) in img_end:
+            if os.path.isfile(file_path) and os.path.splitext(file_path)[-1][
+                    1:].lower() in img_end:
                 imgs_lists.append(file_path)
     if len(imgs_lists) == 0:
         raise Exception("not found any img file in {}".format(img_file))
@@ -77,4 +79,4 @@ def check_and_read_gif(img_path):
             frame = cv2.cvtColor(frame, cv2.COLOR_GRAY2RGB)
         imgvalue = frame[:, :, ::-1]
         return imgvalue, True
-    return None, False
\ No newline at end of file
+    return None, False