In this paper we present an online camera pose estimation method that combines Content-Based Image Retrieval (CBIR) and pose refinement based on a learned representation of the scene geometry extracted from monocular images. Our pose estimation method is two-step, we first retrieve an initial 6 Degrees of Freedom (DoF) location of an unknown-pose q...
International audience
International audience
Retinal blood vessels segmentation is an important step for computer-aided early diagnosis of several retinal vascular diseases, in particular diabetic retinopathy. This segmentation is necessary to evaluate the state of the vascular network and to detect abnormalities (aneurysms, hemorrhages, etc). Many image processing and machine learning method...
Particle estimation is a classical problem arising in many science fields, such as biophysics, fluid mechanics,bio-medical imaging. Many interesting applications in these areas involve 3D data: this work presentsa technique to estimate the 3D coordinates of the center of spherical particles. This procedure providesan estimation of both the center a...
We propose a characterization of hierarchical watersheds built in the framework of edge-weighted graphs. Based on the notion of binary partition hierarchy by altitude ordering, we provide sufficient and necessary conditions for a hierarchy to be a hierarchical watershed. Those conditions are further used to design an efficient algorithm to recogniz...
Ultrasound-Guided Regional Anesthesia is a technique to provide regional anesthesia aided by ultrasound visualization of the region on which the anesthesia will be applied. A proper detection and tracking of the nerve contour is necessary to decide where anesthesia should be applied. If the needle is too far from the nerve contour, the anesthesia c...
During the last decade, there is an ever increasing interest about the decryption and analysis of the human visual system, which offers an intelligent mechanism for capturing and transforming the visual stimulus into a very dense and informative code of spikes. The compression capacity of the visual system is beyond the latest image and video compr...
Living in the age of the digital media explosion, the amount of data that is being stored increases dramatically. However, even if existing storage systems suggest efficiency in capacity, they are lacking in durability. Hard disks, flash, tape or even optical storage have limited lifespan in the range of 5 to 20 years. Interestingly, recent studies...
