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Budoor Salem


Active since 2016

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why JPEG toolbox is not working with matlab R2017b?
I just download a trial version of MATLAB R2017b and I wanted to check if I can read an image using "jpeg_read()" from Phill sal...

6 years ago | 1 answer | 0

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answer

Question


why extracting the secret message from the quantized DCT coefficient of the setgo image gives different message?
when embedding DCT steganography this is the process I did DCT on image value to switch to the transform domain I did th...

7 years ago | 0 answers | 0

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answers

Question


extracting message bits from the LSB of the Quantized DCT coeffcients of stego photo
during the extraction of bits from the LSB of the Quantized DCT coefficients of a stego photo to retrieve the message when shou...

7 years ago | 0 answers | 0

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answers

Question


JPEG Steganography extraction of message
in JPEG Steganography when we do steganography (the embedding )using the LSB of the quantized DCT Coefficients to embed message...

7 years ago | 0 answers | 0

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answers

Question


when using Phil Sallee JPEG toolbox to extract the DCT coefficients are these the quantized DCT coeefcients or they are only DCT coeffcients??
please help I am confused when I write this code im=jpeg_read('Original.jpg'); Lum=im.coef_arrays{im.comp_info(1)....

7 years ago | 0 answers | 0

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answers

Question


JPEG Compression using blockproc is taking so long time when I run it?
I am doing a JPEG compression on an image.. I used blockproc function to perform the DCT and The quantization, however when I ru...

7 years ago | 0 answers | 0

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answers

Question


what are the steps to use Phil Sallee's JPEG toolbox for MATLAB?
I don't know how to integrate Phil Sallee's JPEG toolbox with MATLAB to start using it what are the right steps to be able to ...

7 years ago | 2 answers | 0

2

answers

Answered
error using "bitset" function for DCT steganography...please help
At first, thank you Mr. Walter for taking the time answering me but I am sorry Mr. Walter I did not understand what I need to d...

7 years ago | 0

Question


error using "bitset" function for DCT steganography...please help
I was working on DCT steganography function after getting the quantized DCT coefficients I did this embedding function on the f...

7 years ago | 2 answers | 0

2

answers

Question


I'm trying a simple LSB steganography for embedding and extracting a small message..but whenever I try to extract I keep getting different message :( something wrong with this code.can anyone help please tell me where it got wrong in the extraction..
% try LSB embedding X=imread('peppers.jpg'); X1=X(:,:,1); % embed in the first channel msg='The secret message'; msgB=de...

7 years ago | 0 answers | 0

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answers

Question


I want to make a DCT steganography on the quantized DCT coefficients... should I do the embedding block by block?? and can I use the blockproc function in Matlab for embedding ?
DCT steganography embedding function using Matlab

7 years ago | 1 answer | 0

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