Sökning: "hyperspektrala bilder"
Visar resultat 1 - 5 av 12 uppsatser innehållade orden hyperspektrala bilder.
1. Accelerating MCR-ALS decomposition of hyperspectral images using k-means clustering
Kandidat-uppsats, Lunds universitet/Beräkningsbiologi och biologisk fysik - Genomgår omorganisationSammanfattning : A hyperspectral image may be decomposed into component spectra and their distri- bution in the image to simplify analysis by revealing underlying patterns and reducing the dimensionality of the image; this may be achieved by the algorithm MCR-ALS. However, the algorithm is time consuming, but could be accelerated by a data re- duction. LÄS MER
2. A comparison of different machine learning algorithms applied to hyperspectral data analysis
Master-uppsats, Umeå universitet/Institutionen för fysikSammanfattning : Hyperspectral image analysis works with image data where each pixel contains hundreds of wavelengths acquired from spectral measurements. It is a growing field of research in the sciences and industries because it can distinguish visually similar objects. LÄS MER
3. Pretraining a Neural Network for Hyperspectral Images Using Self-Supervised Contrastive Learning
Master-uppsats, Linköpings universitet/DatorseendeSammanfattning : Hyperspectral imaging is an expanding topic within the field of computer vision, that uses images of high spectral granularity. Contrastive learning is a discrim- inative approach to self-supervised learning, a form of unsupervised learning where the network is trained using self-created pseudo-labels. LÄS MER
4. Detektion och klassificering av äppelmognad i hyperspektrala bilder
Master-uppsats, Linköpings universitet/Medie- och Informationsteknik; Linköpings universitet/Tekniska fakultetenSammanfattning : Detta arbete presenterar en icke-destruktiv metod för att detektera och klassificera mognadsgraden hos äpplen med användning av hyperspektrala bilder. Fastställning av mognadsgraden hos äpplen är intressant för bland annat äppelodlare och musterier vid lagring och beredning. Äpplens mognadsgrad är även intressant inom växtförädling. LÄS MER
5. Image simulations of the mission Martian Moons eXploration
Master-uppsats, KTH/RymdteknikSammanfattning : Martian Moons eXploration is a JAXA-lead mission aiming at exploring the moons of Mars, Phobos and Deimos. The hyperspectral infrared camera provided by France should perform global mapping of Phobos at high resolution in order to characterize surface composition and therefore help determine the origins of the moons. LÄS MER