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amitesh kumar
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Professional Interests: Image processing
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Question
Normalised Correlation Value after applying DCT
Hello everyone i am applying image normalization technique and DCT technique for embedding and extraction watermark image. he...
mer än 13 år ago | 0 answers | 0
0
answersQuestion
CDMA based using multiple PN sequences embeded into whole object
hii everyone I am trying to run this watermark embedding code. my cover image size is 512x512, watermark image is 64x64 and...
mer än 13 år ago | 0 answers | 0
0
answersQuestion
Image extraction from Watermarked image
Hello everyone... I am trying to extract "watermark image" from a watermarked image. For this i am selecting original image o...
mer än 13 år ago | 1 answer | 0
1
answerQuestion
watermark Embedding in Blocks
hello everyone i want to embed watermark in image of size 512*512 & watermark size is 64*64. first of all i am converting origi...
mer än 13 år ago | 3 answers | 1
3
answersError in Image Embedding....
thnku so much *Walter*...got executed prog successfully...i am getting original image, watermark image in perfect manner ..but t...
mer än 13 år ago | 0
Error in Image Embedding....
Thnx sir for ur answer. w(m,n)=0; planes{8}=ones(m,n); planes{8}= and(planes{8},w); % Adding the WaterMark ...
mer än 13 år ago | 0
Question
Error in Image Embedding....
Hello i am trying to run following code... i=imread('lena.tif'); s=double(i); j=imread('watermark.bmp'); w=double(j); ...
mer än 13 år ago | 3 answers | 0
3
answersQuestion
DCT transformation
hello i am trying to apply DCT transformation on image of size 512*512. for applying DCT i use following code I = im2doub...
mer än 13 år ago | 1 answer | 0
1
answerHow do I fix a "Subscripted assignment dimension mismatch."
%This program decode the watermark from the single embed watermarked image clc c=1; t=1; %To read in the watermarked image ...
mer än 13 år ago | 0
Question
How do I fix a "Subscripted assignment dimension mismatch."
clc c=1; t=1; % To read in the watermarked image [watermarked_image cmap]=imread('lsb_image.bmp'); waterma...
mer än 13 år ago | 3 answers | 0
3
answersQuestion
how to get low pass filter from image
When I am trying to run the following code, it is giving an error [ ??? Input argument "P" is undefined. Error in ==> idealf...
mer än 13 år ago | 1 answer | 0
1
answerQuestion
Low-pass filter for image
When I am trying to run the following code, it is giving an error [ ??? Input argument "P" is undefined. Error in ==> i...
mer än 13 år ago | 2 answers | 0
2
answersQuestion
Image retrieving
is it possible to get the original image back after applying fft and log polar transformation on image and its inverse .plz rep...
mer än 13 år ago | 1 answer | 0
1
answerQuestion
Hadamard Transformation
Hello everyone I would like to know that how to generate *Complex Hadamard Transformation Matrix* for N*N matrix . Is it poss...
mer än 13 år ago | 1 answer | 0
1
answerQuestion
Complex to Imaginary & Vice -Versa
Hello everyone I am applying fft on image which giving me complex value . for getting magnitude i am using " X = abs(Y)" f...
mer än 13 år ago | 2 answers | 0
2
answersQuestion
log-polar mapping conversion
I want to change 512*512 pixel gray image into log-polar format. What is the exact procedure to convert it. I tried this with th...
mer än 13 år ago | 2 answers | 0