Search Results for author: Francisco Vasconcelos

Found 20 papers, 7 papers with code

Measuring proximity to standard planes during fetal brain ultrasound scanning

no code implementations10 Apr 2024 Chiara Di Vece, Antonio Cirigliano, Meala Le Lous, Raffaele Napolitano, Anna L. David, Donald Peebles, Pierre Jannin, Francisco Vasconcelos, Danail Stoyanov

This paper introduces a novel pipeline designed to bring ultrasound (US) plane pose estimation closer to clinical use for more effective navigation to the standard planes (SPs) in the fetal brain.

Pose Estimation regression

Gaussian Pancakes: Geometrically-Regularized 3D Gaussian Splatting for Realistic Endoscopic Reconstruction

2 code implementations9 Apr 2024 Sierra Bonilla, Shuai Zhang, Dimitrios Psychogyios, Danail Stoyanov, Francisco Vasconcelos, Sophia Bano

Within colorectal cancer diagnostics, conventional colonoscopy techniques face critical limitations, including a limited field of view and a lack of depth information, which can impede the detection of precancerous lesions.

Novel View Synthesis Simultaneous Localization and Mapping +1

NeRF-Supervised Feature Point Detection and Description

no code implementations13 Mar 2024 Ali Youssef, Francisco Vasconcelos

Feature point detection and description is the backbone for various computer vision applications, such as Structure-from-Motion, visual SLAM, and visual place recognition.

Homography Estimation Point Cloud Registration +2

Online estimation of the hand-eye transformation from surgical scenes

no code implementations4 Jun 2023 Krittin Pachtrachai, Francisco Vasconcelos, Danail Stoyanov

To solve the hand-eye problem in robotic-assisted minimally invasive surgery and also simplify the calibration procedure by using neural network method cooporating with the new objective function.

Ultrasound Plane Pose Regression: Assessing Generalized Pose Coordinates in the Fetal Brain

no code implementations19 Jan 2023 Chiara Di Vece, Maela Le Lous, Brian Dromey, Francisco Vasconcelos, Anna L David, Donald Peebles, Danail Stoyanov

In obstetric ultrasound (US) scanning, the learner's ability to mentally build a three-dimensional (3D) map of the fetus from a two-dimensional (2D) US image represents a significant challenge in skill acquisition.

regression

AutoFB: Automating Fetal Biometry Estimation from Standard Ultrasound Planes

no code implementations12 Jul 2021 Sophia Bano, Brian Dromey, Francisco Vasconcelos, Raffaele Napolitano, Anna L. David, Donald M. Peebles, Danail Stoyanov

To achieve a reproducible and accurate measurement, a sonographer needs to identify three standard 2D planes of the fetal anatomy (head, abdomen, femur) and manually mark the key anatomical landmarks on the image for accurate biometry and fetal weight estimation.

Anatomy Segmentation

FetReg: Placental Vessel Segmentation and Registration in Fetoscopy Challenge Dataset

1 code implementation10 Jun 2021 Sophia Bano, Alessandro Casella, Francisco Vasconcelos, Sara Moccia, George Attilakos, Ruwan Wimalasundera, Anna L. David, Dario Paladini, Jan Deprest, Elena De Momi, Leonardo S. Mattos, Danail Stoyanov

Through the \textit{Fetoscopic Placental Vessel Segmentation and Registration (FetReg)} challenge, we present a large-scale multi-centre dataset for the development of generalized and robust semantic segmentation and video mosaicking algorithms for the fetal environment with a focus on creating drift-free mosaics from long duration fetoscopy videos.

Segmentation Semantic Segmentation

Deep Sequential Mosaicking of Fetoscopic Videos

1 code implementation15 Jul 2019 Sophia Bano, Francisco Vasconcelos, Marcel Tella Amo, George Dwyer, Caspar Gruijthuijsen, Jan Deprest, Sebastien Ourselin, Emmanuel Vander Poorten, Tom Vercauteren, Danail Stoyanov

Mosaicking can align multiple overlapping images to generate an image with increased FoV, however, existing techniques apply poorly to fetoscopy due to the low visual quality, texture paucity, and hence fail in longer sequences due to the drift accumulated over time.

Data Augmentation

Refractive Structure-From-Motion Through a Flat Refractive Interface

no code implementations ICCV 2017 Francois Chadebecq, Francisco Vasconcelos, George Dwyer, Rene Lacher, Sebastien Ourselin, Tom Vercauteren, Danail Stoyanov

By explicitly considering a refractive interface, we develop a succinct derivation of the refractive fundamental matrix in the form of the generalised epipolar constraint for an axial camera.

Pose Estimation

A comparative study of breast surface reconstruction for aesthetic outcome assessment

no code implementations20 Jun 2017 Rene Lacher, Francisco Vasconcelos, David Bishop, Norman Williams, Mohammed Keshtgar, David Hawkes, John Hipwell, Danail Stoyanov

Breast cancer is the most prevalent cancer type in women, and while its survival rate is generally high the aesthetic outcome is an increasingly important factor when evaluating different treatment alternatives.

3D Reconstruction Surface Reconstruction

Similarity Registration Problems for 2D/3D Ultrasound Calibration

no code implementations31 Jul 2016 Francisco Vasconcelos, Donald Peebles, Sebastien Ourselin, Danail Stoyanov

The needle is tracked as a 3D line, and is scanned by the ultrasound as either a 3D line (3D US) or as a 2D point (2D US).

Pose Tracking

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