!49719 fix pillow pad

Merge pull request !49719 from luoyang/fix-pillow-pad

mindspore/python/mindspore/dataset/vision/py_transforms_util.py

@@ -964,6 +964,8 @@ def pad(img, padding, fill_value, padding_mode):
             image = ImageOps.expand(img, border=(left, top, right, bottom), fill=fill_value)
             image.putpalette(palette)
             return image
+        if isinstance(fill_value, tuple) and (img.mode == 'L' or img.mode == '1'):
+            fill_value = (fill_value[0],)
         return ImageOps.expand(img, border=(left, top, right, bottom), fill=fill_value)
 
     if img.mode == 'P':

tests/ut/python/dataset/test_random_crop.py

@@ -17,6 +17,7 @@ Testing RandomCrop op in DE
 """
 import numpy as np
 import pytest
+from PIL import Image
 
 import mindspore.dataset.transforms as ops
 import mindspore.dataset.vision as vision
@@ -550,6 +551,18 @@ def test_random_crop_09():
     assert error_msg in str(error_info.value)
 
 
+def test_random_crop_10():
+    """
+    Feature: RandomCrop
+    Description: Test Py RandomCrop with grayscale/binary image
+    Expectation: The dataset is processed as expected
+    """
+    path = "../data/dataset/apple.jpg"
+    image_list = [Image.open(path), Image.open(path).convert('1'), Image.open(path).convert('L')]
+    for image in image_list:
+        _ = vision.RandomCrop((28))(image)
+
+
 def test_random_crop_comp(plot=False):
     """
     Feature: RandomCrop op
@@ -667,6 +680,7 @@ if __name__ == "__main__":
     test_random_crop_07_py()
     test_random_crop_08_py()
     test_random_crop_09()
+    test_random_crop_10()
     test_random_crop_op_c(True)
     test_random_crop_op_py(True)
     test_random_crop_comp(True)

tests/ut/python/mindrecord/test_imagenet_to_mindrecord.py

@@ -67,7 +67,10 @@ def test_imagenet_to_mindrecord(fixture_file):
     for i in range(PARTITION_NUMBER):
         assert os.path.exists(file_name + str(i))
         assert os.path.exists(file_name + str(i) + ".db")
-    read(file_name + "0")
+    read([file_name + "0",
+          file_name + "1",
+          file_name + "2",
+          file_name + "3"])
 
 def test_imagenet_to_mindrecord_default_partition_number(fixture_file):
     """