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 _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
