# Questions tagged [image-processing]

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### Maximum-Entropy Method deconvolution implementation?

I am looking for an implementation of the Maximum Entropy Method for image deconvolution, ideally in MATLAB or Mathematica. I'm trying to reconstruct an image from fringe visibilities, as is often ...
451 views

### Difference between Fast Fourier transform of a 2D lattice image and its reciprocal lattice image

I have constructed an image of nXn pixels with each pixel having values either 0 or 1. I have added circles in the form of square lattice with definite period a. The image basically looks like (a). ...
224 views

### How do they draw collision pictures in Atlas?

Is the picture below a simulation? How to they draw these pictures? The picture is from here.
138 views

### Difference Between Angular Resolution and Spatial Resolution of optical device (Camera)

As per wikipedia angular resolution is the ability of device to capture minute details of an object and is the same definition in case of spatial resolution. Whats the difference Between Angular ...
111 views

### What is the pixel size of Hitachi SU8230 SEM at 100k magnification?

I have a publication showing an SEM micrograph taken by Hitachi SU8230 model. Is there anyway to learn the pixel sizes?
72 views

### What is the concept of phase congruency?

I am beginner in signal processing. I am studying the importance of phase in signals. I want to know about Phase Congruency, but there is very little information available on internet. So can anybody ...
27 views

### What is the theoretical limit for image sensors

Telescopes are principaly limited by a diffraction-limit. Does this limit affect the image sensor? The Rubin Observatory LSST Camera, the biggest camera in the world with 3.2 gigapixels is having a ...
13 views

### How to evaluate the parallax error in the measure of diffraction rings' diameter?

I have to estimate with an image analysis the diameter of the rings generated by the diffraction of an electron beam with a polycrystalline graphite target. The pattern is made visible by a ...
29 views

### Calculate Modulation Transfer Function from Line Spread Function

I am trying to measure the MTF of a radiology imaging system from a set of CT scans of a phantom. The imaging system is primarily designed for stationary scans so the CT images were low in spatial ...
12 views

### Probabilistic determination of syzygy

Is there a framework for describing the probabilistic confidence of an $N$-body syzygy? Forgive me if I'm misusing terminology: I'd like to know how physicists/astronmers model the confidence of "...
25 views

### About regularization cost function present in Hasselman's 91 (Retrieve wave spectra)

Good morning, What I'm trying to understand is the part of minimizing the functional present in HH91 ("On the nonlinear mapping of an ocean wave spectrum into a synthetic aperture radar image ...
18 views

### Programming integral to go from Image Scene to Light Field

below is the integral I am ultimately trying to program in python 3. To describe the integral, it takes an image scene's photon emission E(s,t,z) and converts it to 4D light field data that a camera ...
59 views

### Is it possible to change the location of a virtual image without using moving lenses?

The benefit of a head-up display is primarily in reducing the time required by the user to refocus their eyes from the head-down display to the head-up surroundings. In applications such as cars, the ...
36 views

### Does the recent picture of the black hole have a native resolution?

Can the resolution be measured in pixels? If so, what is the pixel resolution?
73 views

### What does the width of the 2D Fourier transform of a speckle pattern mean?

Speckle patterns can be studied by capturing an image of the speckle pattern produced on a rough surface when light from a laser passes through an aperture stop. When analysing this speckle pattern, ...
14 views

### What operation is used to construct single image of dual-energy x-ray scanned object?

I know that for dual-energy x-ray screening, two different energies are used which produces two distinct images. I want to know how these images are combined to result in a single image. I know that ...