Feature: support barcode upscaling for better detection of small barcodes (#3655)

src/documents/barcodes.py

@@ -203,11 +203,21 @@ class BarcodeReader:
         try:
             pages_from_path = convert_from_path(
                 self.pdf_file,
-                dpi=300,
+                dpi=settings.CONSUMER_BARCODE_DPI,
                 output_folder=self.temp_dir.name,
             )
 
             for current_page_number, page in enumerate(pages_from_path):
+                factor = settings.CONSUMER_BARCODE_UPSCALE
+                if factor > 1.0:
+                    logger.debug(
+                        f"Upscaling image by {factor} for better barcode detection",
+                    )
+                    x, y = page.size
+                    page = page.resize(
+                        (int(round(x * factor)), (int(round(y * factor)))),
+                    )
+
                 for barcode_value in reader(page):
                     self.barcodes.append(
                         Barcode(current_page_number, barcode_value),