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# Alan AF

14 total contributions since 2011

Professional Interests: Image prosessing

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Question

Scaling image after rotaining camera in y direction
HI I have a set of Images that are calculated to simulate a ray interaction from different views. each image is similar to cal...

5 years ago | 0 answers | 0

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Question

Hi Everyone, Is there any numerically efficient package to compute the Radon transform and the back projection, probably using ...

5 years ago | 2 answers | 1

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Question

Fourier based Filtered back projection
*Hello Everyone,* Are there any Fourier based implementation of the CT filtered back projection reconstruction algorithm. ...

6 years ago | 0 answers | 0

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Question

non uniform fourier transform for Tomography
Hi How can I use the NUFFT for CT tomography problem? I tried to use Fesler package but could not understand how to implement ...

6 years ago | 0 answers | 0

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Question

Central Slice theorem using using Fessler's NUFFT package?
Hello! Do Anyone know how to implement the Central Slice theorem using using Fessler's NUFFT package?

7 years ago | 0 answers | 0

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Question

How to implement Central slice theorem in matlab?
Hello! May I have you help please with the below issue: I am trying to find a accurate and fast implementation of the cent...

7 years ago | 0 answers | 0

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Projection slice theorem using polar NUFFT
Hi everyone! Are there any implementation of the central slice theorem using the polar_FFT of NUFFT ( nonuniform FFT )? Ac...

7 years ago | 0 answers | 0

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Question

spherical aberration and Chromatic aberration
Hi How can we simulate spherical aberration in matlab? It might be by using the below code, but what are the parameters ?? ...

7 years ago | 4 answers | 0

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Question

Maximal Information Coefficient
How can the *Maximal Information Coefficient* be simulated in Matlab? it is described in the paper below: <MIC http://www....

8 years ago | 0 answers | 1

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Question

comparing volume of two 3d matrices
I have two 3d matrices called ORIGINAL and RECONSTRUCTED, size 500x500x500. * ORIGINAL [Solid intensity: 0 black , 1 white...

8 years ago | 1 answer | 0

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Gray image quantization
Thank you, I found the Solution: R2D = mat2gray(R2D); [R2D8,map] = gray2ind(R2D,128); pic = ind2gray(R2D8,map); p...

8 years ago | 0

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Question

Gray image quantization
I am trying to quantize an image into 12 bit intensity using the below code: R2D = mat2gray(R2D); % intensity b...

8 years ago | 2 answers | 0

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Question

Hi Can any one help me implementing 'Exponential Radon'? the Radon function in Matlab is using the Linear Radon type for X-Ray...

8 years ago | 0 answers | 0