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…
