[PDF] Top 20 Sampling by blocks of measurements in compressed sensing

... the sampling strategy imposes to ac- quire data in the form of blocks of measurements (see ...block-structured sampling), instead of isolated measure- ments (see ... Voir le document complet

... level in the image plane (corresponding to a certain level σ) which will serve to measure the detection level of our ...occurs in the Fourier plane, the noise should be injected on the complex ...= ... Voir le document complet

... imposed by the sensing ...generates blocks sampling schemes by (i) projecting a given target proba- bility distribution p defined on the set of isolated measurements on ... Voir le document complet

... advantage of Bayesian methods is to estimate the sparsity level of the image by using a hierarchical ...further by exploiting the spatial corre- lations between the image pixels in the ... Voir le document complet

... theory of sampling has been emerged in the signal processing ...Compressive Sampling or Compressed Sensing (CS) [1], suggests that one can reconstruct perfectly a signal, ... Voir le document complet

... series of CS reconstructions that will enable to separate noisy components from fluorescence signal ...degree of freedom in this series of CS experiments in the choice of the ... Voir le document complet

... Structure of a Fourier-Domain OCT ...uniform sampling, it is necessary to acquire data at a frequency twice the ...point of view but is often violated in ...example of this reality as ... Voir le document complet

... In a room, the acoustic transfer between a source and a receiver is described by the so-called “Room Impulse Response”, which depends on both positions and the room ...the sampling theorem, directly ... Voir le document complet

... problem in the original space, the k-space. Most of those methods are based on the minimization of an inconsistency term between a region of Auto-Calibrating Signal (ACS region), where the ... Voir le document complet

... success of CS in applications such as MRI [1]. It is in particular due to the fact that in the above result we do not assume any structure (apart from sparsity) in the signals to be ... Voir le document complet

... structure of Magnetic Resonance Images (MRI) and especially their compressibility in an appropriate representation basis enables the application of the compressive sensing theory, which ... Voir le document complet

... analysis of atrial fibrillation (AF) arrhythmia represents a challenge ...pattern of AF known as f -wave, is partially masked by the ventricular activity of the heartbeat in the surface ... Voir le document complet

... curves of three random Bernoulli matrices from Table I, with m=10 2 , 12 2 and 14 2 ...underlined in bold in Table I. Note that, due to the limitation of computer memory, as shown in ... Voir le document complet

... challenge in high-resolution MRI that has been successfully addressed by Compressed Sensing (CS) ...accelerated by a factor up to 20 in 2D imaging, the complexity of image ... Voir le document complet

... one of the most dynamic and safe imag- ing modalities used in clinical routine ...resides in its long acquisition times. Over the last decade, Com- pressed Sensing (CS) has been increasingly ... Voir le document complet

... 3. Compressed Sensing Approach Linear methods are easy to use, and the variance of each estimator is rather direct to ...estimator. In this paper, we adopt a compressed sensing ... Voir le document complet

... number of vectors in Φ depends on the analysis operator ...rows in Ω are in general-position, implying that every subset of d or less rows are necessarily linearly ...independent. ... Voir le document complet

... incorporation of granulates or fibers can affect the mechanical and/or thermal performances due to their physico-mechanical effects in the earthen ...resist in contact with liquid water [8], mainly ... Voir le document complet

... L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignemen[r] ... Voir le document complet

... Specifically we consider the case when the probabilities pi mentioned above are values of a continuous function at uniformly spaced points on a given interval. In t[r] ... Voir le document complet