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user137927
  • Member for 7 years, 5 months
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1 vote
3 answers
11k views

What is the intuition of "averaging is a low pass filter"?

1 vote
1 answer
4k views

How to find out if a transform matrix is separable?

2 votes
1 answer
5k views

Difference between 2$\pi f$ and $\omega$ in Fourier transform

6 votes
1 answer
12k views

2D Convolution as a Doubly Block Circulant Matrix Operating on a Vector

1 vote
1 answer
1k views

How to reconstruct signal of its phase and magnitude functions?

1 vote
1 answer
1k views

Is there any difference between using convolution and correlation for finding edges with Sobel?

1 vote
1 answer
151 views

Convolution of $f(2x)$ and $g(3x)$

2 votes
1 answer
4k views

Magnitude of function in $z$ domain

0 votes
1 answer
44 views

Difference between Fourier transform of $\left(\frac{1}{3}\right)^{-k}$ with $k\le -1$ and $\left(\frac{1}{3}\right)^{k}$ with $k\ge 1$

0 votes
1 answer
91 views

Why is being jointly WSS important in signal estimation with LMMSE estimator?

3 votes
2 answers
1k views

What is the Fourier transform of $\delta(t-a)$

1 vote
1 answer
1k views

How do derivative masks work for finding edges in image?

0 votes
1 answer
851 views

How to shift input for testing shift invariance in a system?

2 votes
3 answers
11k views

Why DTFT coefficients are periodic and why continuous Fourier transform coefficients are not periodic?

1 vote
1 answer
83 views

For image quantization, is it necessary to sample image?

0 votes
1 answer
6k views

Rotating and Shifting image doesn't change FFT2