Enhancing Image Quality of Thermal Images (Seek)
As you may know, I recently bought the ”Seek Thermal Camera” for my smartphone. It works great, but the images I take are blurry and quite noisy. In this post I will try to sharpen …
Tag: FFT
Smoothing a Halftone Photo using FFT
In this post I will show how to smooth a halftone image using the fast Fourier Transform (FFT). You can try this out yourself by downloading my Matlab code on the bottom of the article. …
Faster Linear Convolution Using Careful Zero Padding
When computing a linear convolution between an image I and a kernel K, the convention is to use FFT, pad with zeroes (also called zero filling) and use the convolution theorem to do this efficiently. …
Fast Fourier Transform of a zero vector
This is a short post about FFT of zero vectors and as a result show why FFTW does not check if the argument is a zero vector. I could argue that zero vectors are a …
Faro Shuffle retention
This post is about faro shuffles. A Faro shuffle is a perfect riffle shuffle of two halves of a deck of cards so that each card from each half is interlaced perfectly. There are two …
