Search Results for author: Alejandra Sierra

Found 7 papers, 4 papers with code

No-Clean-Reference Image Super-Resolution: Application to Electron Microscopy

no code implementations16 Jan 2024 Mohammad Khateri, Morteza Ghahremani, Alejandra Sierra, Jussi Tohka

The inability to acquire clean high-resolution (HR) electron microscopy (EM) images over a large brain tissue volume hampers many neuroscience studies.

Image Super-Resolution

Self-Supervised Super-Resolution Approach for Isotropic Reconstruction of 3D Electron Microscopy Images from Anisotropic Acquisition

no code implementations19 Sep 2023 Mohammad Khateri, Morteza Ghahremani, Alejandra Sierra, Jussi Tohka

To overcome this limitation, we propose a novel deep-learning (DL)-based self-supervised super-resolution approach that computationally reconstructs isotropic 3DEM from the anisotropic acquisition.

Super-Resolution

gACSON software for automated segmentation and morphology analyses of myelinated axons in 3D electron microscopy

1 code implementation13 Dec 2021 Andrea Behanova, Ali Abdollahzadeh, Ilya Belevich, Eija Jokitalo, Alejandra Sierra, Jussi Tohka

In this work, we introduce a freely available Matlab-based gACSON software for visualization, segmentation, assessment, and morphology analysis of myelinated axons in 3D-EM volumes of brain tissue samples.

Segmentation

RatLesNetv2: A Fully Convolutional Network for Rodent Brain Lesion Segmentation

1 code implementation24 Jan 2020 Juan Miguel Valverde, Artem Shatillo, Riccardo de Feo, Olli Gröhn, Alejandra Sierra, Jussi Tohka

RatLesNetv2 obtained similar to higher Dice coefficient values than the other ConvNets and it produced much more realistic and compact segmentations with notably fewer holes and lower Hausdorff distance.

Image Segmentation Lesion Segmentation +1

Cylindrical Shape Decomposition for 3D Segmentation of Tubular Objects

3 code implementations1 Nov 2019 Ali Abdollahzadeh, Alejandra Sierra, Jussi Tohka

We develop a cylindrical shape decomposition (CSD) algorithm to decompose an object, a union of several tubular structures, into its semantic components.

Object Semantic Segmentation

Automatic Rodent Brain MRI Lesion Segmentation with Fully Convolutional Networks

no code implementations23 Aug 2019 Juan Miguel Valverde, Artem Shatillo, Riccardo de Feo, Olli Gröhn, Alejandra Sierra, Jussi Tohka

Several automatic methods have been developed for different human brain MRI segmentation, but little research has targeted automatic rodent lesion segmentation.

Image Segmentation Lesion Segmentation +3

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