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by dtic
Tue May 28, 2013 7:56 pm
Forum: Camera board
Topic: how to update
Replies: 5
Views: 1414

Re: how to update

First run

Code: Select all

sudo apt-get install rpi-update
Then each time you want to update run

Code: Select all

sudo rpi-update
by dtic
Tue May 28, 2013 7:50 pm
Forum: Camera board
Topic: raspistill timelapse after disconnecting network cable
Replies: 23
Views: 17233

Re: raspistill timelapse after disconnecting network cable

You have to use nohup command , because when ssh session timedout, it will terminate commands that you run over ssh It worked without nohup for me - strange... The next time I use this command also: It is never too late to learn! Adding & at the end as Brickart first suggested worked in my 6 hour t...
by dtic
Tue May 28, 2013 7:04 am
Forum: Camera board
Topic: raspistill timelapse after disconnecting network cable
Replies: 23
Views: 17233

Re: raspistill timelapse after disconnecting network cable

My solution was: putting the job into the background. So try raspistill -o a%04d.jpg -t 21600000 -tl 30000 & Thanks. I will try that. But, out of pure curiousity, can anyone tell why the process worked for ~2 hours before ending? I didn't connect to the raspi during that time and hadn't intentional...
by dtic
Tue May 28, 2013 6:03 am
Forum: Camera board
Topic: raspistill timelapse after disconnecting network cable
Replies: 23
Views: 17233

raspistill timelapse after disconnecting network cable

I log into the raspi (with up to date wheezy-raspbian) over a wired network using SSH and then run this command: raspistill -o a%04d.jpg -t 21600000 -tl 30000 That should take one photo every 30 second for 6 hours in a row. I then remove the network cable. Result after 6 hours: only 257 saved images...
by dtic
Sun May 26, 2013 7:45 pm
Forum: Camera board
Topic: Camera Interface Specs
Replies: 353
Views: 91681

Re: Camera Interface Specs

jamesh wrote:Did you try setting the sharpness to maximum? Not great for photo's but might make text easier to scan.
I tried that in fixed focus mode and it didn't help IIRC. But I haven't tested that in combination with a manual focus change yet though.
by dtic
Sun May 26, 2013 7:39 pm
Forum: Camera board
Topic: Camera Interface Specs
Replies: 353
Views: 91681

Re: Camera Interface Specs

You don't have to binarize the image (you can use gray scale/color), but if you do so, you can adapt "thickness". It's also a good idea to double the resolution when binarizing it. I am quite familiar with the Scan Tailor settings. Outputting grayscale/color, and so on, does not improve the output ...
by dtic
Sun May 26, 2013 2:47 pm
Forum: Camera board
Topic: Camera Interface Specs
Replies: 353
Views: 91681

Re: Camera Interface Specs

1) the image is the sharpest I got from manual tweaking of the focus. The original fixed focus gave me worse results. The image is from before latest firmware update (using rpi-update). I found it tricky to get rid of all the glue (maybe a sewing pin isn't the optimal operating tool? :lol:). The len...
by dtic
Sun May 26, 2013 1:10 pm
Forum: Camera board
Topic: Camera Interface Specs
Replies: 353
Views: 91681

Re: Camera Interface Specs

I'm planning to use it for a book scanner (if the quality ist good enough, at least after applying some further procdessing), but I won't have a camera before August. But one thing is already sure: you need an additional near lens in front of the camera; there's a whole thread discussing the detail...
by dtic
Fri May 10, 2013 7:59 pm
Forum: Camera board
Topic: Camera Interface Specs
Replies: 353
Views: 91681

Re: Camera Interface Specs

Hi, the camera module might prove useful for DIY book scanning of the kind investigated at http://diybookscanner.org and other places. Currently many such setups use Canon point and shoot cameras with the custom CHDK firmware. Could someone with access to a camera module please do this quick test: T...

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