Re: .uvc WebCam Data

["Martin McCormick" <martin.m@suddenlink.net>]

deloptes <deloptes@gmail.com> writes:
> I still don't get it how you want to capture and process video to text to
> audio - perhaps deduplicate frame content etc. - how many frames per 
> second
> do you want to process, cause I did not get this with the 4Mhz and how it
> is relevant. I was thinking your display is running at 60Hz, which is most
> common nowdays. This means you have 60 images/sec .... hmmm how do you
> process 60/sec?
> I am really wondering.

You have actually asked about the only questionI can
intelligently answer at this point and I am greatful for that.

	I was marveling at how fast the analog-to-digital A/D
converter has to work.

	I don't know yet whether I must run at 60 frames per
second all the time and simply grab one frame when ready or if I
can tell the video extraction application to just take one still
picture but I need at least 1 good full screen shot.

	After getting the shot, I should have a jpg or similar
digital image which will look like a freeze frame of the screen.

	It's not quite useful yet but the OCR engine turns it in
to ASCII text.

	Computer users who are blind either use text-to-speech or
text to Braille text applications to finally extract intelligence
from the text resulting from the OCR output.

	This "reading" of the ASCII dump will let the user of the
system know what is on the screen.

	One presses buttons to change a setting and then it's
time to take another picture and OCR that to see what one just
changed.

	I really won't need to take more than one picture every
couple of seconds as it probably takes that long to process each
still and listen to the output.

	Also, I am hoping to be able to compare the most recent
screen grab with the previous grab to see what changed rather than
read all the unchanged portions of the screen.

	Keep in mind that this is not motion video and a blinking
cursor is probably the only change over many seconds.

Martin