[bksvol-discuss] Re: scanning/ocr

  • From: "Judy s." <cherryjam@xxxxxxxxxxxxxxxx>
  • To: bksvol-discuss@xxxxxxxxxxxxx
  • Date: Sat, 20 Dec 2014 14:27:09 -0600

Hi Chris,
I wish I had some ideas for you, but all of the tricks I use require vision and some expertise in graphics packages. I just OCRed a pamphlet that had black text against a dark blue background. I have no idea why the publisher made those color choices as the text was very difficult for me to discern on the original printed page even with vision. I was able to OCR it only after using a graphics package to alter the background color and brightness of each page's image.
Other times when that doesn't work I've sometimes been able to OCR pages after splitting the four underlying CMYK (cyan, magenta, yellow, and key, or black) color channels, and working with the resulting individual channel that results from that which has the best contrast. Doing that definitely requires an advanced graphics package, like GIMP or Photoshop or PaintShop Pro, as well as vision and some expertise in graphics.
If anyone has found a way to tackle this kind of difficult OCR without having to find someone with vision and a graphics package, I'd love to know how to do it because the graphics package routine I'm using isn't a good solution, it's just the best one I've found so far. 


Judy s.
Follow me on Twitter at QuackersNCheese <https://twitter.com/QuackersNCheese> 
On 12/20/2014 3:55 PM, Susan Lumpkin wrote:
Am wondering if green is a color it may not like? I know there are several colors which don’t recognize well but am not sure of which ones they are. Good luck and perhaps someone with vision who knows about colors and scanning will respond to us. 

Susan
*From:*bksvol-discuss-bounce@xxxxxxxxxxxxx [mailto:bksvol-discuss-bounce@xxxxxxxxxxxxx] *On Behalf Of *Christopher Zeigler 
*Sent:* Saturday, December 20, 2014 9:07 AM
*To:* bksvol-discuss@xxxxxxxxxxxxx
*Subject:* [bksvol-discuss] Re: scanning/ocr

I was referring to I was asking about the  kurzweil 1000
I was trying to scan a book and I am visually impaired and the background is green and it is having trouble recognizing the text so I was wondering if anybody had any ideas on how to get this way to recognize the text properly
On Dec 19, 2014 9:28 PM, "Paonia N'Shaiha" <paonia6@xxxxxxxxx <mailto:paonia6@xxxxxxxxx>> wrote: 

Is this what you mean:
http://ocr4linux.com/en:start

Also anyone using this offer suggestions for settings?

Thank you

Paonia
On Fri, Dec 19, 2014 at 6:22 PM, Kelly Pierce <kellytalk@xxxxxxxxx <mailto:kellytalk@xxxxxxxxx>> wrote: 

given that you do not need something that is accessible with a screen
reader, have you considered the package OCR for Linux? It offers a
Linux command line interface using the FineReader OCR engine.  A free
trial is offered.

Kelly
On 12/19/14, Paonia N'Shaiha <paonia6@xxxxxxxxx <mailto:paonia6@xxxxxxxxx>> wrote: 
> Kelly,
> So I know more then I did when I posted this.
>
> I am the person and have low vision but for this conversation I am sighted. > I have 20+ of technical computer experience and would prefer to do this on 
> the Linux command line then in a windows gui.
>
> I have someone who is doing the scanning for me on some fancy Canon
> scanner. PDF Version 1.3 (Acrobat 4.x). I just need to OCR the PDF's.
>
> Thank you!
> Paonia
>
>
> On Fri, Dec 19, 2014 at 1:27 PM, Kelly Pierce <kellytalk@xxxxxxxxx <mailto:kellytalk@xxxxxxxxx>> wrote: 
>
>> It depends whether the person is blind or sighted.  Please be more
>> specific about the capacities and skills of the person who will use
>> this software.
>>
>> Kelly
>>
>> On 12/18/14, Paonia N'Shaiha <paonia6@xxxxxxxxx <mailto:paonia6@xxxxxxxxx>> wrote: 
>> > What do people find works well for them both in terms of scanning and
>> then
>> > ocr and scanning with ocr? Also any particular settings that produce
>> better
>> > rtf's?
>> >
>> > Thank you
>> > Paonia
>> >
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