Journal ArticleDOI
Bilateral Filtering of fMRI Data
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TLDR
It is demonstrated that adaptive filtering provides improved detection of activated regions and average activities in consistent regions rather than regions that maximize correlation with a BOLD model.Abstract:
We present a class of adaptive filtering techniques of functional magnetic resonance imaging (fMRI) data related to bilateral filtering. This class of methods average activities in consistent regions rather than regions that maximize correlation with a BOLD model. Similarity measures based on signal similarity and anatomical similarity are discussed and compared experimentally to standard linear low pass filtering. It is demonstrated that adaptive filtering provides improved detection of activated regions.read more
Citations
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I and i
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Journal ArticleDOI
A Hitchhiker's Guide to Functional Magnetic Resonance Imaging
José Miguel Soares,Ricardo Magalhães,Pedro Moreira,Alexandre Sousa,Edward Ganz,Adriana Sampaio,Victor Alves,Paulo Marques,Nuno Sousa +8 more
TL;DR: This guide is designed to help those new to the fMRI technique to overcome the most critical difficulties in its use, as well as to serve as a resource for the neuroimaging community.
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Joint image denoising using adaptive principal component analysis and self-similarity
TL;DR: An efficient joint denoising algorithm based on adaptive principal component analysis (PCA) and self-similarity that improves the predictability of pixel intensities in reconstructed images and outperforms the state-of-the-art methods in most cases.
Journal ArticleDOI
LISA improves statistical analysis for fMRI.
Gabriele Lohmann,Johannes Stelzer,Eric Lacosse,Vinod Kumar,Karsten Mueller,Esther Kuehn,Esther Kuehn,Wolfgang Grodd,Klaus Scheffler +8 more
TL;DR: A new fMRI analysis tool, LISA, is introduced, which provides increased statistical power compared to existing techniques and allows to find small activation areas that have previously evaded detection.
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SAR image despeckling via bilateral filtering
TL;DR: Experimental results show that the visual quality and evaluation indexes of the proposed algorithm outperform the classical Lee filtering.
References
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Journal ArticleDOI
I and i
TL;DR: There is, I think, something ethereal about i —the square root of minus one, which seems an odd beast at that time—an intruder hovering on the edge of reality.
Proceedings ArticleDOI
Bilateral filtering for gray and color images
Carlo Tomasi,Roberto Manduchi +1 more
TL;DR: In contrast with filters that operate on the three bands of a color image separately, a bilateral filter can enforce the perceptual metric underlying the CIE-Lab color space, and smooth colors and preserve edges in a way that is tuned to human perception.
Journal ArticleDOI
SUSAN—A New Approach to Low Level Image Processing
TL;DR: This paper describes a new approach to low level image processing; in particular, edge and corner detection and structure preserving noise reduction and the resulting methods are accurate, noise resistant and fast.
Journal ArticleDOI
Linear Systems Analysis of Functional Magnetic Resonance Imaging in Human V1
TL;DR: Results from three empirical tests support the hypothesis that fMRI responses in human primary visual cortex (V1) depend separably on stimulus timing and stimulus contrast, and the noise in the fMRI data is independent of stimulus contrast and temporal period.