What did you do this week?

During this week I developed, integrated and tested UDF for forming of a feature vector, based on the presence of non-zero order diffraction peaks.

 Also I got familiar with LiberTEM GUI and had first attempts to integrate GUI for crystallinity map generation.

What is coming up next?

Finish integration of GUI for crystallinity map generation

Did you get stuck anywhere?

Applying 2 different masks (in real and Fourier space) in GUI

My name is Ruzaeva Karina and I am a master student in RWTH Aachen, I study Electrical Engineering and sphere of my interest includes image/signal processing and data science.

During Google Summer of Code I am planning to integrate the algorithms for 4D STEM datasets processing in LiberTEM and make them accessible for material scientists without programming knowledge. I will focus on algorithms, which are applicable for phase-change materials (PCM), because they are some of the most promising materials for data-storage applications.

During bonding period I got familiar with GUI basics and made some literature and libraries overview.

What did I do this week?

During my firs week, I developed user-defined function (UDF) for "crystallinity mapping" in LiberTEM for phase change materials and wrote some tests. This UDF helps to easily distinguish the amorphous and crystalline regions of the specimen.

The data which can be processed with the UDF is 4D-STEM datasets (2D scan domain and 2D detector domain). The algorithm I used is based on Integration over a ring of frames in Fourier space after deleting of outliers and frames preprocessing.

What is coming up next?

Implementing of a UDF for feature vector forming based on blob (non-zero order diffraction peaks) finding, this feature vector can be used for region clustering

Did you get stuck anywhere?

No specific problems appeared, just lack of experience with Github could make me a little slower.