File Exchange

image thumbnail

Filter noise and interpolate microscopy images in frequency domain

version 1.2 (693 KB) by

Remove spatial frequencies beyond the optical cutoff and perform physically accurate interpolation.

3 Downloads

Updated

View License

Intensities recorded by the microscopes (any imaging system with finite aperture) are subject to diffraction limit - the recorded features cannot be finer than the optical cutoff of the system. Filtering the spatial frequencies beyond the optical cutoff provides simple yet effective means of reducing noise. Since microscopy data is band-limited, padding in frequency domain provides accurate interpolation.

Comments and Ratings (1)

Rudolf

Rudolf (view profile)

Updates

1.2

Previous submission contained wrong file.

1.1

* Added an example of improving a point spread function affected by Poisson noise.
* Sharpness of the frequency domain filter is now automatically calculated.
* Renamed the function.

MATLAB Release
MATLAB 7.14 (R2012a)

Download apps, toolboxes, and other File Exchange content using Add-On Explorer in MATLAB.

» Watch video

opticalLowPassInterpolation27Feb2013/ImageProcessing/

opticalLowPassInterpolation27Feb2013/OpticsModeling/