Essays about: "compressive sensing CS"

Found 5 essays containing the words compressive sensing CS.

  1. 1. Sparse Approximation of Spatial Channel Model with Dictionary Learning

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Matilda Zhou; [2022]
    Keywords : Spatial channel model SCM ; dictionary learning; compressive sensing CS ; discrete Fourier transform DFT ; overcomplete discrete Fourier transform ODFT ; Rumslig kanalmodell; ordbokslärning; kompressionsavkänning; diskret Fourier-transform; överkomplett diskret Fourier-transform;

    Abstract : In large antenna systems, traditional channel estimation is costly and infeasible in some situations. Compressive sensing was proposed to estimate the channel with fewer measurements. Most of the previous work uses a predefined discrete Fourier transform matrix or overcomplete Fourier transform matrix to approximate the channel. READ MORE

  3. 2. Reconstruction of Hyperspectral Images Using Generative Adversarial Networks

    University essay from Linköpings universitet/Reglerteknik

    Author : Jacob Eek; [2021]
    Keywords : Coded aperture snapshot spectral imaging; CASSI; Raman; Raman spectroscopy; Explosive; Detection; Hyperspectral Image; HSI; Compressed sensing; Compressive Sensing; CS; Machine Learning; Reconstruction; Inverse problem; Generative Adversarial Network; GAN; CGAN; BEGAN; Latent variable optimization;

    Abstract : Fast detection and identification of unknown substances is an area of interest for many parties. Raman spectroscopy is a laser-based method allowing for long range no contact investigation of substances. READ MORE

  4. 3. Compressive Sensing: Single Pixel SWIR Imaging of Natural Scenes

    University essay from Linköpings universitet/Datorseende

    Author : Andreas Brorsson; [2018]
    Keywords : Compressed sensing; Compressive sensing; CS; Compressive imaging; compressed imaging; CI; SPC; Single pixel camera; single pixel imaging; SWIR; Short-wavelength infrared; IR; infrared; Natural Scenes; DMD; Digital micromirror device; FOI;

    Abstract : Photos captured in the shortwave infrared (SWIR) spectrum are interesting in military applications because they are independent of what time of day the pic- ture is captured because the sun, moon, stars and night glow illuminate the earth with short-wave infrared radiation constantly. A major problem with today’s SWIR cameras is that they are very expensive to produce and hence not broadly available either within the military or to civilians. READ MORE

  5. 4. Development of 3D Spectrometry using Compressive Sensing

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

    Author : Jonas Ravelid; [2018]
    Keywords : Compressive Sensing; 3D; Spectroscopy; Imaging; Multi-spectral; CS; TwIST; Mask; Physics and Astronomy;

    Abstract : Multi-spectral imaging is a powerful approach in spectral analysis of objects with spatial details. However, such approaches are most often time consuming and experimentally complex since both spectral and spatial information in two dimensions are to be resolved. READ MORE

  6. 5. Compressive Sensing in Medical Ultrasonography

    University essay from KTH/Ljud- och bildbehandling

    Author : Julien Richy; [2012]
    Keywords : ;

    Abstract : The recently introduced compressive sensing (CS) theory allows – under certain assumptions – to recover a signal sampled below the Nyquist sampling limit. Compressive sensing can be applied for two purposes. First, to decrease the number of samples needed to capture the information, thus allowing faster acquisitions. READ MORE