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Feature: collate two single-sided multipage scans (#3784)

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* Feature: collate two single-sided scans

Some ADF only support single-sided scans, making scanning
double-sided documents a bit annoying.

This new feature enables Paperless to do most of the work,
by merging two seperate scans into a single one, collating
the even and odd numbered pages.

* Documentation: clarify that collation is disabled by default

* Apply suggestions from code review

Co-authored-by: shamoon <4887959+shamoon@users.noreply.github.com>

* Address code review remarks

* Grammar fixes

---------

Co-authored-by: shamoon <4887959+shamoon@users.noreply.github.com>
This commit is contained in:
Dennis Brakhane
2023-07-24 09:29:04 +02:00
committed by GitHub
parent 9f5d47c320
commit 8c7554e081
11 changed files with 584 additions and 48 deletions
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docs/configuration.md
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@@ -1116,6 +1116,43 @@ combination with PAPERLESS_CONSUMER_BARCODE_UPSCALE bigger than 1.0.
Defaults to "300"
## Collate Double-Sided Documents {#collate}
`PAPERLESS_CONSUMER_ENABLE_COLLATE_DOUBLE_SIDED=<bool>`
: Enables automatic collation of two single-sided scans into a double-sided
document.
This is useful if you have an automatic document feeder that only supports
single-sided scans, but you need to scan a double-sided document. If your
ADF supports double-sided scans natively, you do not need this feature.
`PAPERLESS_CONSUMER_RECURSIVE` must be enabled for this to work.
For more information, read the [corresponding section in the advanced
documentation](/advanced_usage#collate).
Defaults to false.
`PAPERLESS_CONSUMER_COLLATE_DOUBLE_SIDED_SUBDIR_NAME=<str>`
: The name of the subdirectory that the collate feature expects documents to
arrive.
This only has an effect if `PAPERLESS_CONSUMER_ENABLE_COLLATE_DOUBLE_SIDED`
has been enabled. Note that Paperless will not automatically create the
directory.
Defaults to "double-sided".
`PAPERLESS_CONSUMER_COLLATE_DOUBLE_SIDED_TIFF_SUPPORT=<bool>`
: Whether TIFF image files should be supported when collating documents.
This will automatically convert any TIFF image(s) to pdfs for later
processing. This only has an effect if
`PAPERLESS_CONSUMER_ENABLE_COLLATE_DOUBLE_SIDED` has been enabled.
Defaults to false.
## Binaries
There are a few external software packages that Paperless expects to