[jawsscripts] Re: Convenient OCR usage with Flash installation window

  • From: "Geoff Chapman" <gch@xxxxxxxxxxxxxxxx>
  • To: <jawsscripts@xxxxxxxxxxxxx>
  • Date: Tue, 23 Oct 2012 03:23:23 +1100

Awesome! do let us know how that goes David eh.


----- Original Message ----- 
From: "David Farough" <David.Farough@xxxxxxxxxxxxx>
To: <jawsscripts@xxxxxxxxxxxxx>
Sent: Tuesday, October 23, 2012 1:51 AM
Subject: [jawsscripts] Re: Convenient OCR usage with Flash installation 
window


> Next time I see the dialogue I will change to high contrast settings
> with black on white and see what results with Convenient OCR.
>
> David Farough
> Application Accessibility Coordinator/coordonateur de l'accessibilitÃ
> Information Technology Services Directorate /
> Direction des services d'information technologiques
> Public Service Commission / Commission de la fonction publique
> Email / Courriel:  David.Farough@xxxxxxxxxxxxx
> Tel. / TÃl:    (613) 992-2779
>
>>>> "Geoff Chapman" <gch@xxxxxxxxxxxxxxxx> 07:54 PM Sunday, October 21,
> 2012 >>>
> ah. hmmm, Thanks Don for this further clarification upon contrast and
> enlargement.
>
> I certainly hadn't cottoned on to the greyscale, then setting a
> "threshold?"
> and then converting to black and white thing.  I'm still not sure I
> totally
> get that, but it sounds like the conversion to greyscale thing is
> necessary
> before one can convert to the presumably more contrasted black/white.
> upon
> which the OCR might conceivably do a better job.
> Ok, I think I get that much.
>
> And your saying this can't be done then, on the whole windows OS screen
>
> itself then, before running convenient OCR? and then setting it back to
>
> normal afterwards? Or I guess that isn't that feasible to do??? Maybe
> it
> can't even be done in windows colour schemes anywayz.
>
> I wonder.
>
>
> ----- Original Message ----- 
> From: "Don Marang" <donald.marang@xxxxxxxxx>
> To: <jawsscripts@xxxxxxxxxxxxx>
> Sent: Saturday, October 20, 2012 11:39 PM
> Subject: [jawsscripts] Re: Convenient OCR usage with Flash installation
>
> window
>
>
>> Normally, before performing OCR of a screen or window, an image of
> the
>> area is taken and some preprocessing is performed.  It is possible
> to
>> help with contrast problems to convert to grayscale and then set a
>> threshold and convert to black and White.  Like I said before, most
> OCR
>> engines do not do well with inverse video or low resolution, so
>> reversing colors and enlarging 3x may be needed as well.
>> However, I am not sure these OCR preprocessing tips help with the
> JAWS
>> Convenience OCR.  I am not sure there is any method to manipulate or
> get
>> access to the temporary image of the window before OCR is performed.
>>
>>
>> *Don Marang*
>> Vinux Package Development Coordinator - vinuxproject.org
>> <http://www.vinuxproject.org/>
>>
>>
>> On 10/20/2012 12:06 AM, Geoff Chapman wrote:
>>> Thanks for this david.
>>>
>>> Firstly not relevant I know, but I simply cannot belieeeeeeve adobe
> has
>>> gotten away with providing such a ridiculously inaccessibly/poorly
> coded
>>> front end flash updater! for, - how many years now? just
> unbelievable!
>>>
>>>
>>> Secondly though, I think somehow I've disabled this, or made it
>>> autoupdate
>>> or something,
>>> as I haven't seen it pop up on my machine for a goodish while now.
>>>
>>> Do you know if there's a way of forcing it to reappear by any
> chance?
>>>
>>> Problem is with messing with color schemes in windows, is I'd
> imagine
>>> optimally you'd kinda need a sightling nearby to indicate what kind
> of
>>> contrast difference one's choices actually visually made to that
> window,
>>> before running the Convenient OCR test on it.
>>> Would not one?
>>> tricky!
>>> ----- Original Message ----- 
>>> From: "David Farough" <David.Farough@xxxxxxxxxxxxx>
>>> To: <jawsscripts@xxxxxxxxxxxxx>
>>> Sent: Saturday, October 20, 2012 12:47 AM
>>> Subject: [jawsscripts] Convenient OCR usage with Flash installation
>
>>> window
>>>
>>>
>>>> Recently someone on the list suggested that Convenient OCR might
> help
>>>> with the Flash installation screen.  Recently I tried it out.  The
> only
>>>> text that convenient OCR could find was the window title.
> Probably
>>>> because much of the window is dark red with light or white text.
> Those
>>>> infamous buttons are black text on a gray background.  this is a
> good
>>>> example which seems to strengthen Don's findings.
>>>>
>>>> If anyone gets better results than I had I would be interested to
> know
>>>> how they did it.
>>>>
>>>> David Farough
>>>> Application Accessibility Coordinator/coordonateur de
> l'accessibilitÃÂ
>>>> Information Technology Services Directorate /
>>>> Direction des services d'information technologiques
>>>> Public Service Commission / Commission de la fonction publique
>>>> Email / Courriel:  David.Farough@xxxxxxxxxxxxx
>>>> Tel. / TÃÂl:    (613) 992-2779
>>>>
>>>>>>> Don Marang <donald.
>>>> Most of my experience with color combinations is with attempting
> to
>>>> get
>>>> good results from screen snapshots in Vinux with my speedy-ocr
> profgam.
>>>>
>>>> It needs good contrast and does not do well in inverse video.  I
> want
>>>> to
>>>> find a way to tell if inverse colors are being used, so I can
> reverse
>>>> them again before performing OCR.  I probably will run the OCR
> both
>>>> ways
>>>> and pick the most accurate.  First, I need to determine
> automatically
>>>> which is more accurate, possibly by getting confidence info from
> the
>>>> OCR
>>>> engine.
>>>>
>>>> I have yet to find an accessible light text on a dark background
> color
>>>> scheme for my website suitable for low vision users.  I have not
> found
>>>> good colors for visited, hover, and active links.
>>>>
>>>>
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