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Lester


Active since 2013

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I require a code for embedding and extraction of a watermark from an image (DCT Domain). Please help.
we want to - embed a watermark - extract d watermark - prevent it from attacks - provide additional functionalities like sec...

9 years ago | 3 answers | 0

3

answers

Question


How to convert invisible watermark to visible watermark? Please help
clc; clear all; start_time=cputime; k=50; blocksize=8; file_name1='C:\Users\Public\Pictures\Sample Pic...

10 years ago | 2 answers | 0

2

answers

Answered
Problem in extracting the watermark ! !
sir , may i know what are the steps followed for embedding and extracting the image in DCT domain in the above code....???

10 years ago | 0

Question


i have a code for dct watermarking wherin the watermark is getting embedded but the watermark is an invisible watermark.....wat changes do i hve to make to make the watermark visible?
clc; clear all; start_time=cputime; k=50; blocksize=8; file_name1='C:\Users\Public\Pictures\Sample Picture...

10 years ago | 0 answers | 0

0

answers

Answered
This is a dct code on watermark embedding. Please fix it
How do you go about embedding the watermark in the color planes? I didn't get you sir

10 years ago | 0

Question


This is a dct code on watermark embedding. Please fix it
The error I'm encountering is this --> Warning: Size vector should be a row vector with integer elements. > In wa...

10 years ago | 2 answers | 0

2

answers

Answered
I require a code for embedding and extraction of a watermark from an image (DCT Domain). Please help.
Very grateful sir...but the code you have provided is LSB watermarking..what about the code in the DCT domain? is it the same?

10 years ago | 0