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SheppLogan
  • Member for 7 years, 3 months
  • Last seen more than a month ago
7 votes
1 answer
3k views

What is a Kravchuk transform and how is it related to Fourier transforms?

6 votes
2 answers
4k views

2D convolution of image with filter as successive 1D convolutions

5 votes
2 answers
10k views

What effect does rotation in the spatial domain has on phase in Fourier transforms?

4 votes
1 answer
359 views

Estimation / Reconstruction of an Image from Its Missing Data 2D DFT

2 votes
2 answers
1k views

Sinc interpolation in spatial domain

2 votes
1 answer
2k views

Shannon-Nyquist theorem reconstruct 1Hz sine wave from 2 samples

1 vote
2 answers
957 views

Sinc interpolation of pure sine wave sampled just at Nyquist frequency

1 vote
2 answers
7k views

Understanding the phase in DFT

1 vote
2 answers
2k views

DCT vs DFT why do we need/want phase?

1 vote
0 answers
604 views

Implementing rotation in frequency domain and map it back to spatial domain

1 vote
1 answer
155 views

LSM level set method vs thresholding

1 vote
2 answers
195 views

Fractional powers of complex numbers (DSPrelated computation)

1 vote
0 answers
49 views

Adversarial training: deep learning book

1 vote
1 answer
191 views

Quadrature signal acquisition simulation

1 vote
1 answer
1k views

2D Fourier downsampling

1 vote
3 answers
680 views

DFT and perfect reconstruction of a square wave on a digital computer

1 vote
0 answers
52 views

3D interpolation of a volume with irregular upsampling

1 vote
0 answers
97 views

A simple tutorial on how to use fessler NUFFT toolbox for motion correction?

1 vote
1 answer
244 views

Why does upsampling and interpolation by convolution introduce a shift compared to imresize?

0 votes
0 answers
413 views

How to implement interpolation by convolution for rotation of an image by an angle which is not a multiple of 90 degrees?

0 votes
0 answers
57 views

2D Fourier transform normalization/standardization for machine learning

0 votes
1 answer
3k views

U-nets : how exaclty is upsampling performed

0 votes
0 answers
66 views

Why does upsampling in the frequency domain produces replicas of the signal in spatial/time domain [duplicate]

0 votes
0 answers
18 views

Find points that are mapped to the original grid with image rotation by a non multiple of 90 degrees

0 votes
0 answers
200 views

NUFFT of non-uniformly sampled signal

0 votes
1 answer
486 views

Better understanding of downsampling (decimation) and upsampling (interpolation)

0 votes
0 answers
947 views

Matlab normxcorr for 1D signals

0 votes
1 answer
618 views

Fourier transform in Matlab and hermitian symmetry

0 votes
1 answer
196 views

Linear interpolation formula

0 votes
1 answer
114 views

Aliasing correspondance with respect to DFT