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megha prabhu


Active since 2018

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Implementation of El-gamaal algorithm for images
I have tried implementing the elgamal algo for image but i m unable to find the logical error.How can i modify the algo for impl...

6 years ago | 0 answers | 0

0

answers

Question


the code works well only for few cases when the array dimension is same ,need help when array dimension slightly changes(need to add q till the size of y )
q=mtimes(z,B); x=plus(Y,q); figure() imshow(x)

6 years ago | 0 answers | 0

0

answers

Answered
i have used the code to convert rgb image to binary , need to convert binary back to rgb
I tried using im2bw() it gives an error.how can I convert an an image to binary?

6 years ago | 0

Question


i have used the code to convert rgb image to binary , need to convert binary back to rgb
RGBi=im2double(imread('autumn.tif')); imshow(RGBi) Ii = rgb2gray(RGBi); imshow(Ii) bi=imbinari...

6 years ago | 3 answers | 0

3

answers

Question


what is meant by intensity factor(alpha)
DCMm=DCM+(α*Em) where: DCMm = DC matrix after embedding message DCM = DC matrix of cover image α = the intensity fact...

6 years ago | 1 answer | 0

1

answer

Question


error in steganography using dct
Error in finding b and c...what is the error? please help I = imread('cameraman.tif'); I2=imread('F:\watermark.jpg'); sub...

6 years ago | 0 answers | 0

0

answers

Question


how to implement one time pad encryption for images?
One time pad is an interesting method i implemented it on alphabets .I need help in implementing it on images?

6 years ago | 1 answer | 0

1

answer