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

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Bastian Machek
2023-06-27 19:18:47 +02:00
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parent b9335a738f
commit 324e30bd4b
6 changed files with 85 additions and 1 deletions
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docs/configuration.md
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@@ -1095,6 +1095,27 @@ barcode.
Defaults to "ASN"
`PAPERLESS_CONSUMER_BARCODE_UPSCALE=<float>`
: Defines the upscale factor used in barcode detection.
Improves the detection of small barcodes, i.e. with a value of 1.5 by
upscaling the document beforce the detection process. Upscaling will
only take place if value is bigger than 1.0. Otherwise upscaling will
not be performed to save resources. Try using in combination with
PAPERLESS_CONSUMER_BARCODE_DPI set to a value higher than default.
Defaults to 0.0
`PAPERLESS_CONSUMER_BARCODE_DPI=<int>`
: During barcode detection every page from a PDF document needs
to be converted to an image. A dpi value can be specified in the
conversion process. Default is 300. If the detection of small barcodes
fails a bigger dpi value i.e. 600 can fix the issue. Try using in
combination with PAPERLESS_CONSUMER_BARCODE_UPSCALE bigger than 1.0.
Defaults to "300"
## Binaries
There are a few external software packages that Paperless expects to