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Scanning / adding not working at all #202

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vonAlenberg opened this issue Jan 16, 2020 · 3 comments
Open

Scanning / adding not working at all #202

vonAlenberg opened this issue Jan 16, 2020 · 3 comments

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@vonAlenberg
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vonAlenberg commented Jan 16, 2020 •
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I try to create usable TIFFs using the instructions from the webpage, but everything fails.

Here is the file I use:
analog1.PDF

sdaps:

sdaps convert PROJECT analog1.PDF -o output.tif
------------------------------------------------------------------------------
- SDAPS -- convert
------------------------------------------------------------------------------
analog1.PDF: Not a TIFF or MDI file, bad magic number 20517 (0x5025).

imagemagick

convert -density 300 analog1.PDF -threshold 30% -compress none analog1.tif

creates a horrible tif-file. So I adjust the threshold to 70%

convert -density 300 analog1.PDF -threshold 70% -compress none analog1.tif

which results in a nice tif-file. However, sdaps cannot add it:

sdaps add 5b/analog analog1.tif                                          
------------------------------------------------------------------------------
- SDAPS -- add
------------------------------------------------------------------------------
Invalid input file analog1.tif. You need to specify a (multipage) monochrome TIFF as input.

I tried preprocessing with GIMP, not helping.

What do I have to do to get this stuff working? About 60 sheets waiting for me...

System

Arch Linux 5.3.18-1-surface #1 SMP PREEMPT Sat Dec 28 00:09:48 CET 2019 x86_64 GNU/Linux
sdaps 1.9.7
opencv 4.2.0-1
opencv-python (4.1.2.30)
@benzea
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benzea commented Jan 16, 2020

Did you try to follow the instructions? Because they explicitly state to add -monochrome to the convert command line after the -threshold X% argument.

The easier thing is to just use add --convert and throw in the PDF directly.

@vonAlenberg
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Did you try to follow the instructions? Because they explicitly state to add -monochrome to the convert command line after the -threshold X% argument.

Yes, just forgot to paste it into here.

The easier thing is to just use add --convert and throw in the PDF directly.

Same error as before, however it works. 1.tif is added to the folder. Why?

@benzea
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benzea commented Jan 17, 2020

Because there is an automated fallback and the file is converted to the correct format for you.

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@benzea @vonAlenberg