Category: scikit-learn
#denoising #dictionary learning #scikit-learn
I am presenting an image denoising example that fully runs under my local scikits-learn fork. Coming soon near you!
The 400 square pixels area covering Lena’s face was distorted by additive gaussian noise with a standard deviation of 50 (pixel values are ranged 0-256.)
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The dictionary contains 100 atoms …
Category: scikit-learn
#gsoc #Uncategorized
After a little busy while, I have graduated and entered the summer vacation, which means time for serious GSoC work.
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So we had a little conference in order to discuss what will be done and when. We gathered quite a few code snippets since the official start of the project …
Category: scikit-learn
#Uncategorized #dictionary learning #omp #orthogonal matching pursuit
I am working on implementing the Orthogonal Matching Pursuit (OMP) algorithm for the scikit. It is an elegant algorithm (that almost writes itself in Numpy!) to compute a greedy approximation to the solution of a sparse coding problem:
$$ \text{argmin} \big|\big|\gamma\big|\big|_0 \text{ subject to }\big …