Daniel Reetz, the founder of the DIY Book Scanner community, has recently started making videos of prototyping and shop tips. If you are tinkering with a book scanner (or any other project) in your home shop, these tips will come in handy. https://www.youtube.com/channel/UCn0gq8 ... g_8K1nfInQ

SpreadPi: The new DIY Book Scanner control system.

Johannes Baiter's Spreads and SpreadPi are the latest control systems and postprocessors for DIY scanning. http://spreads.readthedocs.org
kifty
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Re: SpreadPi: The new DIY Book Scanner control system.

Post by kifty » 26 May 2014, 16:51

Hmmm... spomwii's photos may be focusing correctly, but mine definitely aren't, at least not consistently. Any ideas about what might be causing this? I need to pack up the kit for the conference on Wednesday, and I'd like to show off something OCR-able.

Can I go into CHDK and force autofocus off somehow, or does spreadPi overwrite those settings?

markvdb
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Re: SpreadPi: The new DIY Book Scanner control system.

Post by markvdb » 26 May 2014, 18:03

kifty wrote:Hmmm... spomwii's photos may be focusing correctly, but mine definitely aren't, at least not consistently. Any ideas about what might be causing this? I need to pack up the kit for the conference on Wednesday, and I'd like to show off something OCR-able.

Can I go into CHDK and force autofocus off somehow, or does spreadPi overwrite those settings?
The default values are in a file named config.yaml. You can find the file in the directory/home/spreads/.config/spreads . These are the default settings:

https://github.com/DIYBookScanner/sprea ... onfig.yaml
Mark
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kifty
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Re: SpreadPi: The new DIY Book Scanner control system.

Post by kifty » 26 May 2014, 21:10

Does all of the confuguration information that is generated when you run "spread configure" end up in config.yaml? I noticed there doesn't seem to be any kind of "autofocus" switch in there.

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daniel_reetz
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Re: SpreadPi: The new DIY Book Scanner control system.

Post by daniel_reetz » 26 May 2014, 21:11

markvdb wrote:
kifty wrote:Hmmm... spomwii's photos may be focusing correctly, but mine definitely aren't, at least not consistently. Any ideas about what might be causing this? I need to pack up the kit for the conference on Wednesday, and I'd like to show off something OCR-able.

Can I go into CHDK and force autofocus off somehow, or does spreadPi overwrite those settings?
The default values are in a file named config.yaml. You can find the file in the directory/home/spreads/.config/spreads . These are the default settings:

https://github.com/DIYBookScanner/sprea ... onfig.yaml
Huh, I don't see anything in there relating to focus at all. This is probably something we need to bring up with Johannes. He is currently on vacation, I understand, returning after the 28th. Can't wait to have you up and running so we have a few more people with working setups... we really need to build a critical mass of people that can help with all these teething issues.

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Re: SpreadPi: The new DIY Book Scanner control system.

Post by jbaiter » 27 May 2014, 01:31

spomwii, the issue with footpedal-induced shots not being registered by the counter is due to a bug in the event-handling code that has I've already fixed in my not yet published postprocessing branch. I will merge it once I am home from my vacation and added some tests :)
spreads: Command-line workflow assistant

spomwii
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Re: SpreadPi: The new DIY Book Scanner control system.

Post by spomwii » 27 May 2014, 02:40

jbaiter wrote:spomwii, the issue with footpedal-induced shots not being registered by the counter is due to a bug in the event-handling code that has I've already fixed in my not yet published postprocessing branch. I will merge it once I am home from my vacation and added some tests :)
Ah, thanks :)
I moved the pedal directly to the pi again last night, and then it worked as normal again. :)

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Re: SpreadPi: The new DIY Book Scanner control system.

Post by spomwii » 27 May 2014, 02:43

daniel_reetz wrote:
markvdb wrote:
kifty wrote:Hmmm... spomwii's photos may be focusing correctly, but mine definitely aren't, at least not consistently. Any ideas about what might be causing this? I need to pack up the kit for the conference on Wednesday, and I'd like to show off something OCR-able.

Can I go into CHDK and force autofocus off somehow, or does spreadPi overwrite those settings?
The default values are in a file named config.yaml. You can find the file in the directory/home/spreads/.config/spreads . These are the default settings:

https://github.com/DIYBookScanner/sprea ... onfig.yaml
Huh, I don't see anything in there relating to focus at all. This is probably something we need to bring up with Johannes. He is currently on vacation, I understand, returning after the 28th. Can't wait to have you up and running so we have a few more people with working setups... we really need to build a critical mass of people that can help with all these teething issues.
I am not sure if this is relevant any more but I remember when I bought the kit from Mark and was using the keypedal script, it was important to set these settings on the cameras: https://github.com/markvdb/diybookscann ... ettings.md

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Re: SpreadPi: The new DIY Book Scanner control system.

Post by markvdb » 27 May 2014, 03:49

Not relevant anymore.
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PocketLibrarian
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Re: SpreadPi: The new DIY Book Scanner control system.

Post by PocketLibrarian » 31 Jan 2015, 01:13

What is "not relevant anymore"?
The entire project?
Thanks,
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Cypris2010
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Re: SpreadPi: The new DIY Book Scanner control system.

Post by Cypris2010 » 03 Feb 2015, 14:51

Has anybody of you already got hand on a raspberry pi 2?

Would be interesting to know how it can handle postprocessing.

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