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Title: CIRCULAR CONVOLUTION OF TWO FINITE LENGTH SEQUENCES USING DFT AND IDFT
Page Link: CIRCULAR CONVOLUTION OF TWO FINITE LENGTH SEQUENCES USING DFT AND IDFT -
Posted By: seminar class
Created at: Friday 06th of May 2011 06:10:45 PM
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Procedure:-
1) Find the length of the first sequence x=x_length
2) Find the length of the first sequence h=h_length
3) Take the circular convolution order as N
4) If x_length < N, pad enough number of zeros to x, so that the number of samples in the modified x=N
5) If h_length < N ,pad enough number of zeros to h, so that the number of samples in the modified h=N
6) Take DFT for modified x=x(k)
7) Take DFT for modified h=H(k)
8) Compute Y(K)=X(K)*H(K)
9) Compute y(n)=IDFT(Y(k))
10) Verify if y=conv(x, ....etc
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Title: Detecting Original Image Using Histogram DFT and SVM
Page Link: Detecting Original Image Using Histogram DFT and SVM -
Posted By: seminar class
Created at: Tuesday 03rd of May 2011 07:19:58 PM
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Abstract
Information hiding for covert communication is rapidlygaining momentum. With sophisticated techniques beingdeveloped in steganography, steganalysis needs to beuniversal. In this paper we propose Universal Steganalysisusing Histogram, Discrete Fourier Transform and SVM(SHDFT). The stego image has irregular statisticalcharacteristics as compare to cover image. Using Histogramand DFT, the statistical features are generated to train One-Class SVM to discriminate the cover and stego image.SHDFT algorithm is found to be efficient an ....etc
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Title: CIRCULAR CONVOLUTION OF TWO SEQUENCES
Page Link: CIRCULAR CONVOLUTION OF TWO SEQUENCES -
Posted By: seminar class
Created at: Friday 06th of May 2011 06:05:31 PM
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Procedure:-
1. Enter the sequence x
2. Enter the sequence y
3. Find the lengths of x and y,ie;Nx and Ny respectively
4. Check Nx=Ny:proceed if equal
5. Initialize a loop variable number of output points
6. For each out sample , access the samples of y in the cyclic order
7. Find the sum of products of x and cyclically folded and shifted y
Description:-
Steps for Cyclic Convolution
Steps for cyclic convolution are the same as the usual convolution, except all index calculations are done mod N = on ....etc
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Title: image steganography in frequency domain using dft matlab code
Page Link: image steganography in frequency domain using dft matlab code -
Posted By:
Created at: Wednesday 25th of May 2016 10:26:02 AM
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I need source code of Image Steganography in frequency domain using DFT .
plz email me at [email protected]
....etc
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Title: 2-D DFT of two dimensional finite extent sequences
Page Link: 2-D DFT of two dimensional finite extent sequences -
Posted By: project report helper
Created at: Friday 22nd of October 2010 01:36:17 PM
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2-D DFT of two dimensional finite extent sequences.
2-D DFT and Convolution
The DFT can be computed with a fast algorithm and it is sometimes beneficial to do the convolution of two sequences A (M1 £ N1) and B (M2 £ N2) via point DFTs. Speed improvements are only possible if both sequences have large dimensions. Otherwise convolutions are better implemented via the convolution sum.
2-D Low-Pass Filtering of Images We will be intere ....etc
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Title: verilog code for circular convolution
Page Link: verilog code for circular convolution -
Posted By:
Created at: Sunday 27th of March 2016 08:57:42 PM
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I need code for circular convolution in verilog ....etc
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Title: LINEAR CONVOLUTION OF TWO FINITE LENGTH SEQUENCES USING DFT AND IDFT
Page Link: LINEAR CONVOLUTION OF TWO FINITE LENGTH SEQUENCES USING DFT AND IDFT -
Posted By: seminar class
Created at: Friday 06th of May 2011 06:10:48 PM
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Procedure:-
1) Find the length of the first sequence x=x_length
2) Find the length of the second sequence h=h_length
3) Estimate the number of samples in the result of linear convolution of x &h=Y_length
4) If X_length
5) If h_length
6) Take DFT for modified x=x(k)
7) Take DFT for modified h=H(k)
8) ....etc
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Title: circular convolution of different length sequences
Page Link: circular convolution of different length sequences -
Posted By:
Created at: Wednesday 21st of November 2012 01:44:31 AM
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circular convolution of different length sequences ....etc
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Title: CIRCULAR CONVOLUTION
Page Link: CIRCULAR CONVOLUTION -
Posted By: seminar class
Created at: Friday 06th of May 2011 06:22:23 PM
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#include
#include
int m,n,x,h,y,i,j,temp,k,x2,a;
void main()
{
printf( enter the length of the first sequence\n);
scanf(%d,&m);
printf( enter the length of the second sequence\n);
scanf(%d,&n);
printf( enter the first sequence\n);
for(i=0;i
scanf(%d,&x);
printf( enter the second sequence\n);
for(j=0;j
scanf(%d,&h);
if(m-n!=0) /*If length of both sequences are not equal*/
{
if(m>n) /* Pad the smalle ....etc
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Title: circular convolution using vedic mathematics
Page Link: circular convolution using vedic mathematics -
Posted By:
Created at: Sunday 14th of April 2013 01:40:09 AM
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Circular convolution using vedic methode ....etc
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