Update pipeline.py

pipeline.py

@@ -50,6 +50,8 @@ from diffusers.pipelines.pipeline_utils import DiffusionPipeline
 from diffusers.utils import deprecate
 
 import torchvision
+import PIL
+import PIL.Image
 import math
 
 logger = logging.get_logger(__name__)  # pylint: disable=invalid-name
@@ -785,7 +787,7 @@ class AnimateDiffPipeline(DiffusionPipeline, TextualInversionLoaderMixin, IPAdap
         x_velocity: Optional[float] = 0,
         y_velocity: Optional[float] = 0,
         scale_velocity: Optional[float] = 0,
-        init_image: Optional[str] = None,
+        init_image: Optional[PIL.Image.Image] = None,
         init_image_strength: Optional[float] = 1.0,
         init_noise_correlation: Optional[float] = 0.0,
     ):