fix logic determining whether indices is image / video shape in lfq

Author: lucidrains

setup.py

@@ -3,7 +3,7 @@
 setup(
   name = 'vector_quantize_pytorch',
   packages = find_packages(),
-  version = '1.9.16',
+  version = '1.9.18',
   license='MIT',
   description = 'Vector Quantization - Pytorch',
   long_description_content_type = 'text/markdown',

vector_quantize_pytorch/lookup_free_quantization.py

@@ -129,7 +129,7 @@ def indices_to_codes(
         indices,
         project_out = True
     ):
-        is_img_or_video = indices.ndim >= 3
+        is_img_or_video = indices.ndim >= (3 + int(self.keep_num_codebooks_dim))
 
         if not self.keep_num_codebooks_dim:
             indices = rearrange(indices, '... -> ... 1')