Meter Reading with tesseract

[erwin.clo...@gmail.com]

Is Tesseract suited to extract a meter reading from a picture of a
gas, electricity or water meter ?

It would be nice to be able to take a picture of your meters with your
smartphone and then upload the results to a spreadsheet or to your
company's website.
Now I have the possibility to manually enter a meter reading on the
websit of my electricity provider, but i have to go to my meter and
write down the numbers on a piece of paper, go bak to my pc and
manually enter the numbers. It would be nice to be able to do that
with an app that ocr's a picture and sends the readings to that
website.

[Jimmy O'Regan]

On 27 July 2010 15:00, erwin.clo...@gmail.com

<erwin.clo...@gmail.com> wrote:
> Is Tesseract suited to extract a meter reading from a picture of a
> gas, electricity or water meter ?
>

No more than it is to reading licence plates, but people have tried
anyway - whether or not they're successful, I can't say (the list
isn't exactly inundated with success stories - people generally only
write when there's a problem).

Give it a try, and see if it works out. If the recognition works out
ok, maybe someone will be motivated to write an app. Or you could
always get in touch with Apple's marketing people -- "reading my power
meter -- there *isn't* an app for that".

--
<Leftmost> jimregan, that's because deep inside you, you are evil.
<Leftmost> Also not-so-deep inside you.

[Jessica Ulyate]

I am currently using Tesseract to recognize characters from photos of
water meters. I've used a variety of methods to extract a clean, black
and white line of numbers from the photo and I've trained a new
character set that is comprised of images of the dials. The biggest
issue I'd say is not training Tesseract to recognize the numbers, but
rather being able to consistently produce/extract clear numbers from a
photo. (If you're interested, I currently have a recognition success
rate of >90% )

[Giuseppe Menga]

Jessica,
I'm fearly interested.
In my case I have to recognize the expiration date of medecins, and for the
numbers, the used fonts are difficult to find.
I also was planning to train tesseract directly from a set of photos.
Are you using the not yet released version 3.0 or the last official release?
I'm interested to have more details.

Giuseppe

--------------------------------------------------
From: "Jessica Ulyate" <jessica...@gmail.com>
Sent: Friday, September 24, 2010 9:03 AM
To: "tesseract-ocr" <tesser...@googlegroups.com>
Subject: Re: Meter Reading with tesseract

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[Jimmy O'Regan]

On 24 September 2010 10:06, Giuseppe Menga <me...@polito.it> wrote:
> Jessica,
> I'm fearly interested.
> In my case I have to recognize the expiration date of medecins, and for the
> numbers, the used fonts are difficult to find.
> I also was planning to train tesseract directly from a set of photos.
> Are you using the not yet released version 3.0 or the last official release?

Tesseract 3.0 will be released in the coming week.

[Sven Pedersen]

Hi Mehdi,

She has not posted to the list in a while, but Nick suggested using ImageMagick command line to someone with a similar issue:

 convert in.png -monochrome -density 600 -compress none out.tif

Perhaps you can search the archives with 'tesseract meter reading'

--Sven

On Wed, Jan 23, 2013 at 10:51 AM, Mehdi Chouiten <chou...@gmail.com> wrote:

Jessica, can you please explain in a more detailed way your method ?

I'm facing the same problem as you.

Thanks.

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--
``All that is gold does not glitter,
  not all those who wander are lost;
the old that is strong does not wither,
  deep roots are not reached by the frost.
From the ashes a fire shall be woken,
  a light from the shadows shall spring;
renewed shall be blade that was broken,
  the crownless again shall be king.”

[Ngoc Thanh Huynh]

Hi Jess,
I know it was a long time ago but are you still playing with Tesseract? I am currently doing my final year project in uni and I am trying to use Tesseract which doesn't give me a high successful rate (like 20%). I really desire to know how you do your preprocessing and training data. If you still remember anything or still keeping your codes can you please help me out, that would save my life!
My email address is thanh.h...@gmail.com