Re: [Jocr-devels] recognizing 7 segment numbers

[Carl K. <ca...@pe...>]

awesome!  thanks.

Know of any python bindings for gocr?  i could use PIL for the image stuff, and 
the -> database step would be easier.

Carl K

Christian Stern wrote:
> I tested it out.
> 
> gorc was able to read the digits. i cropped the picture. turned in
> black and white and removed the dot. if the cam is on a fixed position
> it is possible to put all these in a script to get your volt-display
> into a file or database.
> 
> script:
> 
> read pictures exiv for datestamp
> crop it to digits only
> (remove dot)
> black and white
> gorc
> -> database
> 
> If there is no contant brightness and a window you will need some
> settings fit to the daylight outside.
> 
> possible!
> 
> Christian Stern
> 
> 2008/7/23 Carl Karsten <ca...@pe...>:
>> I have a webcam pointed at a digital volt meeter - it saves a jpg every minute.
>>  I want to graph the numbers over time (time stamp of the file) - here is a sample:
>>
>> http://dev.personnelware.com/carl/temp/Jul23/a/motion/01-20080723093400-snapshot.jpg
>>
>> I am guessing this is outside what gocr is meant for, but figured I would ask,
>> and ask for suggestions too.
>>
>> one thought is I can probably check for which segments are on, and then it is a
>> simple lookup: assign segments to bits, 0 is the 6 outer segments on, so
>> something like 1111110 = 0x7e = 126.  1 is just the 2 on the right: 0110 0000 -
>> 0x60 = 96.
>>
>> 126, 0
>> 96, 1
>> ...
>> 127, 8
>>
>> The tricky part is identifying where the segments are.  for the most part
>> everything is stationary, but as I re-configure my tests I move the cam/meeter
>> around, so each run will have the segments in different parts of the image.
>> If gocr could somehow help with this, yay.
>>
>> Carl K
>>
>>
>>
>>
>>
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