During her doctoral research in the Netherlands, Gemma Piella developed a new method for processing images. With this method more details are visible at a lower resolution than the original image: both the wood and the individual trees are distinct. Piella also combined various images of the same object to produce a detailed complete picture.
Mathematician Gemma Piella has developed a new technique for processing images. For this she used a mathematical operation that makes use of so-called wavelets. Just like a sinus, the upward and downward deviation of each of these small waves is the same. However, the wavelets only exist over a short distance and all of the peaks and troughs have different heights and widths. These characteristics ensure that a single operation can simultaneously render both large and small objects visible. This enables you to see both the entire wood and the individual trees at the same time.
A scene can only be fully understood if it can be seen at many different levels. For example, if you see a wood from a distance, your first impression is just a green surface. If you come closer by, you can see the trees. If you zoom in even further still, you can even see the leaves and the bark. Therefore, which information you extract from the picture depends upon the level at which you see it. So-called multiresolution techniques such as those used by Piella, render all details, at every level in the image visible at the same time.
Lydie van der Meer | NWO
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The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
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Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
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In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...
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