Stenography
deoxy t2
Hello friends.
I'm new to the list and new in Objective-C and Apple programming and I have a very timely question, I want to manipulate images to develop stenography, but do not know where begin. I'm reading:1.-vImage Programming Guide2 Core Image Programming Guide
But it is not clear which library is correct in order to manipulate images and achieve what I want.
any ideas?.
Thanks a lot.
deoxyt2.-
http://deoxyt2.livejournal.com
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Alex Zavatone
On Mar 27, 2012, at 4:19 PM, deoxy t2 wrote:
>
>
> Hello friends.
> I'm new to the list and new in Objective-C and Apple programming and I have a very timely question, I want to manipulate images to develop stenography, but do not know where begin. I'm reading:1.-vImage Programming Guide2 Core Image Programming Guide
> But it is not clear which library is correct in order to manipulate images and achieve what I want.
What do you want?
> any ideas?.
> Thanks a lot.
> deoxyt2.-
> http://deoxyt2.livejournal.com
>
- Alex Zavatone
Graham Cox
On 28/03/2012, at 7:19 AM, deoxy t2 wrote:
>
>
> Hello friends.
> I'm new to the list and new in Objective-C and Apple programming and I have a very timely question, I want to manipulate images to develop stenography, but do not know where begin. I'm reading:1.-vImage Programming Guide2 Core Image Programming Guide
> But it is not clear which library is correct in order to manipulate images and achieve what I want.
> any ideas?.
> Thanks a lot.
> deoxyt2.-
> http://deoxyt2.livejournal.com
Stenography? Writing using shorthand? Did you mean Steganography?
vImage is powerful and very low level. It's probably unnecessary for steganography. Just create or obtain the bitmap for the image and manipulate its bits. A bitmap is wrapped by NSBitmapImageRep which is wrapped by NSImage. You can load an image (for a JPEG, say) very easily using NSImage, get its NSBitmapImageRep, get the bitmap buffer, change the bits and write it out.
If you really did mean Stenography, perhaps you could explain what you want. I imagine stenography is possible using a custom font and a NSTextView, though parsing plain text into its stenographic form is more an exercise in tokenising the input text and mapping that to stenographic units.
Beyond that, you probably need to ask more specific questions.
--Graham
Gregory Weston
> I'm new to the list and new in Objective-C and Apple programming and I have a very timely question, I want to manipulate images to develop stenography, but do not know where begin. I'm reading:1.-vImage Programming Guide2 Core Image Programming Guide
> But it is not clear which library is correct in order to manipulate images and achieve what I want.
> any ideas?.
Just so we're clear, you're asking about steGAnography, right?
Reaves, Timothy
in to text.
On Sun, Apr 1, 2012 at 7:07 AM, Gregory Weston <gwe...@mac.com> wrote:
> deoxy t2 wrote:
>
> > I'm new to the list and new in Objective-C and Apple programming and I
> have a very timely question, I want to manipulate images to develop
> stenography, but do not know where begin. I'm reading:1.-vImage Programming
> Guide2 Core Image Programming Guide
> > But it is not clear which library is correct in order to manipulate
> images and achieve what I want.
> > any ideas?.
>
> Just so we're clear, you're asking about steGAnography, right?
>
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Kirk Kerekes
"Stenography" is writing in shorthand.
NSBitMapImageRep allows individual pixel access.
On Apr 1, 2012, at 12:16 AM, cocoa-de...@lists.apple.com wrote:
> Message: 9
> Date: Tue, 27 Mar 2012 20:19:26 +0000
> From: deoxy t2 <deo...@lacamaradegas.cl>
> To: coco...@lists.apple.com
> Subject: Stenography
> Message-ID: <SNT124-W50615EF80...@phx.gbl>
> Content-Type: text/plain; charset="iso-8859-1"
>
>
>
> Hello friends.
> I'm new to the list and new in Objective-C and Apple programming and I have a very timely question, I want to manipulate images to develop stenography, but do not know where begin. I'm reading:1.-vImage Programming Guide2 Core Image Programming Guide
> But it is not clear which library is correct in order to manipulate images and achieve what I want.
> any ideas?.
> Thanks a lot.
> deoxyt2.-
> http://deoxyt2.livejournal.com
>
vincent habchi
> He wants to write an app that will take a picture of shorthand and turn it
> in to text.
Stenography (Greek stenos-: reduced) is an obsolete system of script secretaries used to take notes on the fly. I’m not sure, but I think it is a syllabic script. I don’t think anybody use it anymore: it has been superseded by Siri :)
>
Steganography comes from Greek steganos, roof, wherefore it’s use for obfuscated communications.
Vincent
Alex Zavatone
It pays to actually be able to spell the term you are asking people for advice on.
Mikkel Islay
Since the original poster explicitly wrote "stenography", it seems plausible that was what he meant.
In fact, i know that trainee journalists in the UK are taught shorthand, even though it seems surprising. No doubt the same applies for other countries (and professions) as well. For all their virtues smart-phones and tablets have some limitations when it comes to text-input. An app for transcribing shorthand to longhand would have its uses and audience, no doubt.
Mikkel
On 2 Apr 2012, at 14:49, Alex Zavatone wrote:
> Thank you Kirk.
>
> It pays to actually be able to spell the term you are asking people for advice on.
>
>
> On Apr 2, 2012, at 8:42 AM, Kirk Kerekes wrote:
>
>> For the sake of later Googlers, the word is "Steganography" (<http://en.wikipedia.org/wiki/Steganography>.
>>
>> "Stenography" is writing in shorthand.
>>
>> NSBitMapImageRep allows individual pixel access.
>>
>> On Apr 1, 2012, at 12:16 AM, cocoa-de...@lists.apple.com wrote:
>
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Peter Teeson
> Le 2 avr. 2012 à 14:37, "Reaves, Timothy" <tre...@silverfieldstech.com> a écrit :
> Stenography (Greek stenos-: reduced) is an obsolete system of script secretaries used to take notes on the fly.
Indeed. I had a secretary who knew both Pitman and Gregg stenography methods. That dates me for sure.
(She would then go to a typewriter to produce the letter or article - hehehehe)
Perhaps a current use of a similar mechanism would be a court reporter or the Congressional floor reporters
walking around to each person speaking.
> Steganography comes from Greek steganos, roof, wherefore it’s use for obfuscated communications.
Lee Ann Rucker
On Apr 2, 2012, at 8:18 AM, Peter Teeson wrote:
> On 2012-04-02, at 8:46 AM, vincent habchi wrote:
>> Le 2 avr. 2012 à 14:37, "Reaves, Timothy" <tre...@silverfieldstech.com> a écrit :
>>> He wants to write an app that will take a picture of shorthand and turn it into text.
>> Stenography (Greek stenos-: reduced) is an obsolete system of script secretaries used to take notes on the fly.
>> I’m not sure, but I think it is a syllabic script. I don’t think anybody uses it anymore: it has been superseded by Siri :)
> Indeed. I had a secretary who knew both Pitman and Gregg stenography methods. That dates me for sure.
> (She would then go to a typewriter to produce the letter or article - hehehehe)
> Perhaps a current use of a similar mechanism would be a court reporter or the Congressional floor reporters
> walking around to each person speaking.
>> Steganography comes from Greek steganos, roof, wherefore it’s use for obfuscated communications.
> Fascinating article.. thanks.
Well, there is some crossover - some stenographers had a style so idiosyncratic that only they could read it.
Peter Teeson
On 2012-04-02, at 2:24 PM, Lee Ann Rucker wrote:
>
> On Apr 2, 2012, at 8:18 AM, Peter Teeson wrote:
>
>> On 2012-04-02, at 8:46 AM, vincent habchi wrote:
>>> Le 2 avr. 2012 à 14:37, "Reaves, Timothy" <tre...@silverfieldstech.com> a écrit :
>>>> He wants to write an app that will take a picture of shorthand and turn it into text.
>>> Stenography (Greek stenos-: reduced) is an obsolete system of script secretaries used to take notes on the fly.
>>> I’m not sure, but I think it is a syllabic script. I don’t think anybody uses it anymore: it has been superseded by Siri :)
>> Indeed. I had a secretary who knew both Pitman and Gregg stenography methods. That dates me for sure.
>> (She would then go to a typewriter to produce the letter or article - hehehehe)
>> Perhaps a current use of a similar mechanism would be a court reporter or the Congressional floor reporters
>> walking around to each person speaking.
>>> Steganography comes from Greek steganos, roof, wherefore it’s use for obfuscated communications.
>> Fascinating article.. thanks.
> Well, there is some crossover - some stenographers had a style so idiosyncratic that only they could read it.
ROTFL