enhancement: make DPI default 300 when using chipper (#174)

Made `pdf_image_dpi` default to `None` to allow for conditional default, 300 when using chipper, 200 otherwise.

Author: qued

CHANGELOG.md

@@ -1,6 +1,7 @@
-## 0.5.11-dev0
+## 0.5.11
 
 * Add warning when chipper is used with < 300 DPI
+* Use None default for dpi so defaults can be properly handled upstream
 
 ## 0.5.10
 

unstructured_inference/__version__.py

@@ -1 +1 @@
-__version__ = "0.5.11-dev0"  # pragma: no cover
+__version__ = "0.5.11"  # pragma: no cover

unstructured_inference/inference/layout.py

@@ -367,7 +367,7 @@ def process_data_with_model(
     ocr_mode: str = "entire_page",
     fixed_layouts: Optional[List[Optional[List[TextRegion]]]] = None,
     extract_tables: bool = False,
-    pdf_image_dpi: int = 200,
+    pdf_image_dpi: Optional[int] = None,
 ) -> DocumentLayout:
     """Processes pdf file in the form of a file handler (supporting a read method) into a
     DocumentLayout by using a model identified by model_name."""
@@ -397,11 +397,13 @@ def process_file_with_model(
     ocr_mode: str = "entire_page",
     fixed_layouts: Optional[List[Optional[List[TextRegion]]]] = None,
     extract_tables: bool = False,
-    pdf_image_dpi: int = 200,
+    pdf_image_dpi: Optional[int] = None,
 ) -> DocumentLayout:
     """Processes pdf file with name filename into a DocumentLayout by using a model identified by
     model_name."""
 
+    if pdf_image_dpi is None:
+        pdf_image_dpi = 300 if model_name == "chipper" else 200
     if (pdf_image_dpi < 300) and (model_name == "chipper"):
         logger.warning(
             "The Chipper model performs better when images are rendered with DPI >= 300 "