Steganography: Hiding and Extracting Text in Image using DWT

I am doing a project on steganography using skin tone detection and DWT. I am using the following steps for embedding: 1)Load image 2)Skin tone detection 3)Cropping (key) 4)DWT 5)Embed secret message in B plane 6)IDWT 7)Image reconstruction. But I seem to have problem regarding the extraction part. The steps I need to follow: 1)Load stego image 2)skin tone detection 3)Crop according to the key 4)DWT 5)extract message. I can perform the first 4 steps. But I don't have any algorithms or steps to extract the message. Please can anyone suggest any methods to extract the text message?

Answer 1

[Arun Kumar]

it depends on which algorithm you used in embedding section

[Nagaveni S A]

Here is the website from where I got my code. Even though I have made some changes in other part of the code according to my needs, the basic embedding algorithm is same and untouched.

http://btechgurus.blogspot.in/2012/05/matlab-code-skintone-based.html

[Randrianjohany Tolotra]

Please,could i have your code please?

[Image Analyst]

The Mathworks does not allow posting of steganography code on their website.

[Mumthas S]

Please mail me the code on [e-mail]

[Hayder mohammedqasim]

Please,could i have your code please?

[Walter Roberson]

Hayder mohammedqasim: probably no-one was notified about your message; certainly Nagaveni was not notified. You can contact Nagaveni by clicking on their username and then using the Contact button in their profile.

Answer 2

[Image Analyst]

The Mathworks does not allow posting of steganography code on their website.

However I was able to post a demo where I "encoded" text into an image in my File Exchange http://www.mathworks.com/matlabcentral/fileexchange/54155-encoding-text-into-image-gray-levels

Encoding/decoding and watermarking is allowed. Cryptography and steganography is not.

[Karbala'a Unvi. Science]

that is a great function that you are doing here I hope that one day I will be abel to so

Thank you for that

Answer 3

[Amal]

Steganography Hide text in an image Using LSB? Matlab GUI

[Image Analyst]

See attached.

Answer 4

[Amal]

Steganography: Hiding Text in Image using LSB?

[Image Analyst]

Why are you Answering @Nagaveni S A again with the same "Answer" you just posted an hour earlier? And I replied to your "Answer" (that was actually a question, not an answer). If you don't like my code, then start writing your own or hire someone to write it for you. I'm not sure what you want or expect from us. You're a man of very few words.