Gilles
  • Member for 9 years, 6 months
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4 answers
80 votes
219k views
114 bookmarks
What is meant by a system's "impulse response" and "frequency response?"
6 answers
94 votes
179k views
75 bookmarks
Why should I zero-pad a signal before taking the Fourier transform?
8 answers
140 votes
163k views
128 bookmarks
Why is the Fourier transform so important?
8 answers
67 votes
114k views
40 bookmarks
How do I implement cross-correlation to prove two audio files are similar?
9 answers
75 votes
98k views
40 bookmarks
Why do we use the HSV colour space so often in vision and image processing?
10 answers
104 votes
85k views
86 bookmarks
What is the physical significance of negative frequencies?
3 answers
46 votes
82k views
40 bookmarks
Why is the FFT "mirrored"?
5 answers
124 votes
78k views
96 bookmarks
What does frequency domain denote in case of images?
4 answers
94 votes
77k views
39 bookmarks
What is the difference between a Fourier transform and a cosine transform?
3 answers
28 votes
75k views
26 bookmarks
Variance of White Gaussian Noise
5 answers
50 votes
69k views
24 bookmarks
What is the difference between phase delay and group delay?
5 answers
181 votes
64k views
102 bookmarks
"River" detection in text
7 answers
36 votes
64k views
47 bookmarks
Understanding the Matched Filter
6 answers
6 votes
64k views
8 bookmarks
Why Carrier signal can't have frequency less than Message signal
6 answers
61 votes
59k views
49 bookmarks
What is the distinction between ergodic and stationary?
4 answers
75 votes
58k views
65 bookmarks
What are some free alternatives to SIFT/ SURF that can be used in commercial applications?
8 answers
51 votes
55k views
32 bookmarks
Meaning of Hilbert Transform
3 answers
39 votes
50k views
30 bookmarks
What are the most common algorithms for adaptive thresholding?
2 answers
23 votes
50k views
32 bookmarks
Step by Step Camera Pose Estimation for Visual Tracking and Planar Markers
6 answers
46 votes
49k views
35 bookmarks
Simplest way of detecting where audio envelopes start and stop
5 answers
54 votes
48k views
35 bookmarks
What is the difference between convolution and cross-correlation?
4 answers
35 votes
47k views
15 bookmarks
Hilbert transform to compute signal envelope?
3 answers
111 votes
44k views
61 bookmarks
Why is it a bad idea to filter by zeroing out FFT bins?
5 answers
34 votes
44k views
16 bookmarks
Why are Gaussian filters used as low pass filters in image processing?
4 answers
35 votes
34k views
19 bookmarks
What is the true meaning of a minimum phase system?
2 answers
64 votes
32k views
83 bookmarks
Why so many methods of computing PSD?
5 answers
7 votes
30k views
10 bookmarks
Difference between DC component and zero frequency component of signal
2 answers
17 votes
30k views
14 bookmarks
How do I manually plot the frequency response of a bandpass Butterworth filter in MATLAB without freqz function?
3 answers
22 votes
30k views
11 bookmarks
What is the Gabor filter? And what are its main uses?
2 answers
24 votes
29k views
11 bookmarks
Stationary vs non-stationary signals?
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