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image-processing

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24 Questions

Votes Activity Newest Views
1
5
votes
3
answers
1k
views

What is energy in image processing?

image-processing computer-vision terminology signal-energy
Nov 4 '19 at 21:21 Laurent Duval 25.3k
2
4
votes
3
answers
2k
views

How to Zero Pad in Order to Perform Filtering in the Fourier (Frequency) Domain?

image-processing fourier-transform computer-vision convolution zero-padding
Oct 18 at 6:57 Royi 16.3k
1
3
votes
1
answer
734
views

What is the relation between time, frequency, spatial and spectral domains?

image-processing computer-vision terminology
May 4 at 17:00 Community♦ 1
 
3
votes
1
answer
260
views

What is the difference between an impulse response and a kernel?

image-processing filters computer-vision impulse-response terminology
Apr 18 at 10:58 alvitawa 111
 
2
votes
3
answers
557
views

What do we mean by spectrum?

image-processing computer-vision terminology
Nov 29 at 17:22 Laurent Duval 25.3k
1
2
votes
0
answers
74
views

How does the “additive operator splitting” exactly work?

image-processing computer-vision filtering non-linear anisotropic-diffusion
Jun 2 '19 at 11:38 nbro 395
 
2
votes
0
answers
224
views

Intuitively, why is the comb function the sampling function?

image-processing sampling computer-vision
Mar 28 '19 at 11:41 nbro 395
1
1
vote
2
answers
377
views

How Is the Gaussian Kernel Related to the Euclidean Distance of the Neighborhoods in the Non Local Means Denoising Algorithm?

image-processing matlab filters computer-vision denoising
Sep 22 at 17:18 Royi 16.3k
 
1
vote
2
answers
190
views

Why do we need multiple layers in each octave and multiple octaves in SIFT?

feature-extraction sift
Jun 25 at 7:18 Olli Niemitalo 11.7k
 
1
vote
2
answers
181
views

What Is the Relation Between Deblurring and Deconvolution in Computer Vision and Image Processing?

image-processing computer-vision deconvolution inverse-problem blur
May 20 '19 at 18:21 Fat32 23.8k
1
1
vote
2
answers
219
views

Why can convolution only be applied to compute the output of a linear filter?

image-processing filters computer-vision convolution linear-systems
Apr 10 '19 at 13:50 Izzo 608
 
1
vote
2
answers
235
views

Why isn't bilateral filtering shift-invariant?

image-processing filters computer-vision convolution
Apr 8 '19 at 13:54 Olli Niemitalo 11.7k
 
1
vote
1
answer
345
views

What is a periodic signal in image processing?

image-processing fourier-transform computer-vision periodic terminology
Apr 4 '19 at 1:40 user559678 21
 
0
votes
1
answer
86
views

What does this notation $g(x) = S\{\delta(t) \}(x)$ mean?

image-processing linear-systems notation
Jan 14 at 2:01 Community♦ 1
 
0
votes
1
answer
170
views

What is the difference between an image plane and a virtual image?

image-processing computer-vision camera
Dec 18 at 4:07 Community♦ 1
 
0
votes
0
answers
102
views

How does Lowe's ratio test work when you compute more than 2 nearest neighbours?

computer-vision feature-extraction sift feature-detection
May 21 at 16:25 nbro 395
 
0
votes
0
answers
22
views

What is the difference between template matching and object detection?

image-processing computer-vision object-recognition sift template-matching
May 20 at 23:05 nbro 395
 
0
votes
1
answer
42
views

What's the purpose of augmenting an image with a random “gradient”?

computer-vision python machine-learning preprocessing
Feb 26 at 15:00 sansuiso 3,719
 
0
votes
2
answers
289
views

What do the 1D filters represent when using imfilter?

image-processing matlab filters computer-vision convolution
Jun 5 '19 at 8:16 Florian 2,051
 
0
votes
1
answer
33
views

Why is the anisotropic diffusion equivalent to the heat equation when using a constant diffusion coefficient?

image-processing math proof anisotropic-diffusion
May 30 '19 at 16:13 nbro 395
 
0
votes
1
answer
324
views

What is the difference between domain and range filtering?

image-processing computer-vision image filtering terminology
Apr 3 '19 at 21:47 nbro 395
 
0
votes
0
answers
38
views

What is the difference between a range filter and a low-pass filter?

image-processing filters computer-vision lowpass-filter
Mar 29 '19 at 11:43 nbro 395
 
0
votes
1
answer
41
views

Why exactly is the Guassian filter a low-pass filter?

image-processing computer-vision lowpass-filter
Mar 28 '19 at 16:25 Hilmar 18.1k
1
0
votes
2
answers
188
views

What is the basic idea behind Fourier transform? [closed]

fourier-transform fourier fourier-series
Jan 21 '19 at 18:09 nbro 395
Signal Processing
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