Youssra
Mohemmed Ben Abdellah University
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How to implement ABC algorithm for image watermarking?
Hello, I'm working on image watermarking, and I'm trying to use ABC (Artifical Bee Colony) algorithm to optimize scaling facto...
fast 7 Jahre vor | 1 Antwort | 0
1
AntwortFrage
Why the division of two positive values gives negative value?
Hello,I'm using the following code to find a positive factor: [U S V] = svd(image, 'econ'); % calculate the SVD of the imag...
fast 8 Jahre vor | 1 Antwort | 0
1
AntwortFrage
How to choose non sensitive coefficients for watermarking?
Hello, I'm working on image watermarking, I'm working with DWT and SVD and I want to embed a watermark in some coefficients that...
etwa 8 Jahre vor | 0 Antworten | 0
0
AntwortenFrage
Convert binary values to a decimal matrix
Hello, Suppose that I have a matrix a= [1 3; 4 2], I convert this matrix to binary format using this code: a=magic(2...
mehr als 8 Jahre vor | 1 Antwort | 0
1
AntwortFrage
convert a binary image to RGB color space
Hello, I have RGB image that I converted to binary to do some processing and I want to reconvert it back to its original color R...
mehr als 8 Jahre vor | 2 Antworten | 0
2
AntwortenFrage
Getting many outputs using blockproc
I want to apply SVD for each 4*4 blocks using the "blockproc" and get 3 outputs: U, S and V so I can reconstract all blocks toge...
fast 9 Jahre vor | 3 Antworten | 0
3
AntwortenFrage
how to detect a watermark
Hello, How do we know if an image is watermarked? Is there any function helps us to detect a waetermak before extracting it? ...
fast 9 Jahre vor | 0 Antworten | 0
0
AntwortenFrage
Problem with Watermarking in HSV color space
I'm trying to apply a DWT-SVD watermaking in HSV color space, but the final watermarked image is defenitely different than the o...
fast 9 Jahre vor | 0 Antworten | 0
0
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how to control the position of an image inside another one?
Hi, I need your help please. I'm working in Matlab and I have tow images one with size 256*256 and the other one with size 64*6...
etwa 9 Jahre vor | 2 Antworten | 0