Feeds
質問
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...
約8年 前 | 1 件の回答 | 0
1
回答質問
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...
8年以上 前 | 0 件の回答 | 0
0
回答質問
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...
8年以上 前 | 0 件の回答 | 0
0
回答質問
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...
8年以上 前 | 0 件の回答 | 0
0
回答質問
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)....
9年弱 前 | 0 件の回答 | 0
0
回答質問
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...
約9年 前 | 0 件の回答 | 0
0
回答質問
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 ...
約9年 前 | 2 件の回答 | 0
2
回答回答済み
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...
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...
約9年 前 | 0
質問
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...
約9年 前 | 2 件の回答 | 0
2
回答質問
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...
9年以上 前 | 0 件の回答 | 0
0
回答質問
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
9年以上 前 | 1 件の回答 | 0
