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Johan Carlson
Johan Carlson, Professor of Signal processing. View original picture , opens in new tab/window

"A more sustainable use of our resources is absolutely crucial"

Published: 13 May 2022

Johan Carlson is Professor of Signal processing and one of two leaders for Creaternity's graduate school.

What are you researching right now?

My research today is about developing signal processing methods for different applications of measurement technology with ultrasound. Most projects are about non-destructive testing, detecting and locating damage to materials without having to open up and look. Other projects are about using ultrasound to determine certain properties of materials, mainly metals, which are otherwise determined by destructive testing methods.

How come you started researching signal processing?

I have always been interested in signal processing and data analysis, so when I was offered to start my PhD, it felt more or less obvious. During my PhD studies, I researched ultrasound methods for flow measurement, but after my doctoral degree, the focus changed more towards material characterisation and non-destructive testing. In recent years, my group and I have started working more and more with ultrasound imaging in combination with modern machine learning methods.

How does your research play a role in Creaternity?

Ultrasonic measurement is non-destructive, which means that you can do quality control on components without destroying them. A direct effect is to reduce waste during production. A more long-term effect is that you can use the technology to control and optimise the manufacturing processes so that they become both more reliable and more efficient.

What is the most fun discovery / result you have made / produced as a researcher?

It must be when I woke up in the middle of the night with an idea of how to measure / study the hardening process of plaster / cement with the help of ultrasound. After a few early hours in the lab, I had the first results for something that later became a whole series of articles and seminars.

What do you want to achieve during your research career?

A lot is really about helping to train new, young researchers through my role as a supervisor. Through my own research, I hope to be able to push the boundaries of what is technically possible today with imaging ultrasound. From previously being something that could only be done in large labs or hospitals, technological development has made it possible bring this out into the field. It opens up both new solutions and new challenges.

What is the most fun / challenging part of being a part of Creaternity?

In my role as one of the leaders of the graduate school, it is absolutely most fun to be a part of and see how our PhD students grow in the role and develop. It is a unique opportunity to closely follow several research projects within Creaternity.

Why do you think Creaternity is important?

A more sustainable use of our resources is absolutely crucial, and to get there we need to work together interdisciplinary. Difficult challenges simply require new approaches.

Tell us a little about yourself!

I was born and raised in Umeå, but moved to Luleå in 1993 to study computer science and engineering. After my undergraduate studies, I started as a PhD student. Since 2009, I live with my wife, two sons and a dog in Måttsund, south of Luleå.

Johan Carlson

Johan Carlson, Professor

Phone: +46 (0)920 492517
Organisation: Signal Processing, Signals and Systems, Department of Computer Science, Electrical and Space Engineering