Sökning: "Signal and Image change detection"

Hittade 4 uppsatser innehållade orden Signal and Image change detection.

1. 1. Fractional Fourier Transform and Scaling Problem in Signals and Images

   Magister-uppsats, Blekinge Tekniska Högskola/Institutionen för tillämpad signalbehandling

   Författare :Achyutha Ramarao Maddukuri; [2018]
   Nyckelord :Dynamic scaling; Fractional Fourier transform; Fourier transform; Pattern recognition; Signal and Image change detection;

   Sammanfattning : Context: We identify a material or thing that can be seen and touched in the world as having structures at both coarser and finer levels of scale. Scaling problem presents in a branch of science concerned with the description, prediction understanding of natural phenomena and visual arts. LÄS MER

3. 2. Natural sugar as an MRI contrast agent for brain cancer detection using chemical exchange saturation transfer (CEST) imaging at 3T

   Master-uppsats, Lunds universitet/Sjukhusfysikerutbildningen

   Författare :Anina Seidemo; [2018]
   Nyckelord :Medicine and Health Sciences;

   Sammanfattning : Hjärntumörer utgör cirka 2,5% av alla cancerdiagnoser i Sverige (2013) och femårsöverlevnaden är cirka 50%. Hjärntumörer diagnostiseras med bildtagningstekniker såsom datortomografi (CT), positronemissionstomografi (PET) och magnetkamera (MR). LÄS MER

4. 3. Developing a spiking neural model of Long Short-Term Memory architectures

   Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

   Författare :Isabella Pozzi; [2018]
   Nyckelord :Physics and Astronomy;

   Sammanfattning : Current advances in Deep Learning have shown significant improvements in common Machine Learning applications such as image, speech and text recognition. Specifically, in order to process time series, deep Neural Networks (NNs) with Long Short-Term Memory (LSTM) units are widely used in sequence recognition problems to store recent information and to use it for future predictions. LÄS MER

5. 4. Investigation of phase conjugation for medical imaging

   Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Atomfysik

   Författare :Ivan Sytcevich; [2017]
   Nyckelord :Phase conjugation; Ultrasound Optical Tomography; Rare-Earth-Doped Crystals.; Physics and Astronomy;

   Sammanfattning : With the development of extremely precise spectral filters based on spectral hole burning and slow light effects, the idea of their implementation in an Ultrasound Optical Tomography (UOT) medical imaging technique arose. Simulations have shown that the resulting Contrast-to-Noise (CNR) ratio is fairly good at depths up to 5 cm but decreases dramatically when probing deeper in tissue. LÄS MER