Youssra
Mohemmed Ben Abdellah University
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Question
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...
plus de 8 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
plus de 9 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
plus de 9 ans il y a | 1 réponse | 0
0
réponseQuestion
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...
presque 10 ans il y a | 1 réponse | 0
1
réponseQuestion
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...
environ 10 ans il y a | 2 réponses | 0
2
réponsesQuestion
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...
plus de 10 ans il y a | 3 réponses | 0
3
réponsesQuestion
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? ...
plus de 10 ans il y a | 1 réponse | 0
0
réponseQuestion
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...
plus de 10 ans il y a | 1 réponse | 0
0
réponseQuestion
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...
plus de 10 ans il y a | 2 réponses | 0
