Search Results for author: Alberto Sanfeliu

Found 23 papers, 2 papers with code

Human motion trajectory prediction using the Social Force Model for real-time and low computational cost applications

no code implementations17 Nov 2023 Oscar Gil, Alberto Sanfeliu

Human motion trajectory prediction is a very important functionality for human-robot collaboration, specifically in accompanying, guiding, or approaching tasks, but also in social robotics, self-driving vehicles, or security systems.

Generative Adversarial Network Trajectory Prediction

Robot Navigation Anticipative Strategies in Deep Reinforcement Motion Planning

no code implementations15 Oct 2022 Óscar Gil, Alberto Sanfeliu

The navigation of robots in dynamic urban environments, requires elaborated anticipative strategies for the robot to avoid collisions with dynamic objects, like bicycles or pedestrians, and to be human aware.

Motion Planning Robot Navigation

Weakly and Semi-Supervised Detection, Segmentation and Tracking of Table Grapes with Limited and Noisy Data

no code implementations27 Aug 2022 Thomas A. Ciarfuglia, Ionut M. Motoi, Leonardo Saraceni, Mulham Fawakherji, Alberto Sanfeliu, Daniele Nardi

To improve detection and segmentation on the target data, we propose to train the segmentation algorithm with a weak bounding box label, while for tracking we leverage 3D Structure from Motion algorithms to generate new labels from already labelled samples.

Segmentation

Humans Social Relationship Classification during Accompaniment

no code implementations6 Jul 2022 Oscar Castro, Ely Repiso, Anais Garrell, Alberto Sanfeliu

This paper presents the design of deep learning architectures which allow to classify the social relationship existing between two people who are walking in a side-by-side formation into four possible categories --colleagues, couple, family or friendship.

Classification

Body Gesture Recognition to Control a Social Robot

no code implementations15 Jun 2022 Javier Laplaza, Joan Jaume Oliver, Ramón Romero, Alberto Sanfeliu, Anaís Garrell

In this work, we propose a gesture based language to allow humans to interact with robots using their body in a natural way.

Gesture Recognition

Perception-Intention-Action Cycle in Human-Robot Collaborative Tasks

no code implementations1 Jun 2022 J. E. Dominguez-Vidal, Nicolas Rodriguez, Rene Alquezar, Alberto Sanfeliu

In this work we argue that in Human-Robot Collaboration (HRC) tasks, the Perception-Action cycle in HRC tasks can not fully explain the collaborative behaviour of the human and robot and it has to be extended to Perception-Intention-Action cycle, where Intention is a key topic.

Single-view 3D Body and Cloth Reconstruction under Complex Poses

no code implementations9 May 2022 Nicolas Ugrinovic, Albert Pumarola, Alberto Sanfeliu, Francesc Moreno-Noguer

We, therefore, propose a coarse-to-fine approach in which we first learn an implicit function that maps the input image to a 3D body shape with a low level of detail, but which correctly fits the underlying human pose, despite its complexity.

3D Reconstruction

Effects of a Social Force Model reward in Robot Navigation based on Deep Reinforcement Learning

no code implementations8 Dec 2019 Óscar Gil Viyuela, Alberto Sanfeliu

For this reason, this work adds a dense reward function based on SFM and uses the forces in the states like an additional description.

Reinforcement Learning (RL) Robot Navigation

Improving Map Re-localization with Deep 'Movable' Objects Segmentation on 3D LiDAR Point Clouds

no code implementations8 Oct 2019 Victor Vaquero, Kai Fischer, Francesc Moreno-Noguer, Alberto Sanfeliu, Stefan Milz

Results show that we are able to accurately re-locate over a filtered map, consistently reducing trajectory errors between an average of 35. 1% with respect to a non-filtered map version and of 47. 9% with respect to a standalone map created on the current session.

Autonomous Vehicles

3DPeople: Modeling the Geometry of Dressed Humans

no code implementations ICCV 2019 Albert Pumarola, Jordi Sanchez, Gary P. T. Choi, Alberto Sanfeliu, Francesc Moreno-Noguer

Finally, we design a multi-resolution deep generative network that, given an input image of a dressed human, predicts his/her geometry image (and thus the clothed body shape) in an end-to-end manner.

3D Human Shape Estimation Optical Flow Estimation

Fast video object segmentation with Spatio-Temporal GANs

no code implementations28 Mar 2019 Sergi Caelles, Albert Pumarola, Francesc Moreno-Noguer, Alberto Sanfeliu, Luc van Gool

To achieve this, we concentrate all the heavy computational load to the training phase with two critics that enforce spatial and temporal mask consistency over the last K frames.

Descriptive Object +4

Unsupervised Person Image Synthesis in Arbitrary Poses

no code implementations CVPR 2018 Albert Pumarola, Antonio Agudo, Alberto Sanfeliu, Francesc Moreno-Noguer

Given an input image of a person and a desired pose represented by a 2D skeleton, our model renders the image of the same person under the new pose, synthesizing novel views of the parts visible in the input image and hallucinating those that are not seen.

Image Generation

Hallucinating Dense Optical Flow from Sparse Lidar for Autonomous Vehicles

no code implementations30 Aug 2018 Victor Vaquero, Alberto Sanfeliu, Francesc Moreno-Noguer

In this paper we propose a novel approach to estimate dense optical flow from sparse lidar data acquired on an autonomous vehicle.

Autonomous Vehicles Optical Flow Estimation

Deep Lidar CNN to Understand the Dynamics of Moving Vehicles

no code implementations28 Aug 2018 Victor Vaquero, Alberto Sanfeliu, Francesc Moreno-Noguer

Perception technologies in Autonomous Driving are experiencing their golden age due to the advances in Deep Learning.

Autonomous Driving Optical Flow Estimation

Deconvolutional Networks for Point-Cloud Vehicle Detection and Tracking in Driving Scenarios

no code implementations23 Aug 2018 Victor Vaquero, Ivan del Pino, Francesc Moreno-Noguer, Joan Solà, Alberto Sanfeliu, Juan Andrade-Cetto

The system is thoroughly evaluated on the KITTI tracking dataset, and we show the performance boost provided by our CNN-based vehicle detector over a standard geometric approach.

Autonomous Driving Multi-Object Tracking

Joint Coarse-And-Fine Reasoning for Deep Optical Flow

no code implementations22 Aug 2018 Victor Vaquero, German Ros, Francesc Moreno-Noguer, Antonio M. Lopez, Alberto Sanfeliu

We propose a novel representation for dense pixel-wise estimation tasks using CNNs that boosts accuracy and reduces training time, by explicitly exploiting joint coarse-and-fine reasoning.

Optical Flow Estimation

Segmentation-aware Deformable Part Models

no code implementations CVPR 2014 Eduard Trulls, Stavros Tsogkas, Iasonas Kokkinos, Alberto Sanfeliu, Francesc Moreno-Noguer

In this work we propose a technique to combine bottom-up segmentation, coming in the form of SLIC superpixels, with sliding window detectors, such as Deformable Part Models (DPMs).

Optical Flow Estimation Segmentation +1

Dense Segmentation-Aware Descriptors

no code implementations CVPR 2013 Eduard Trulls, Iasonas Kokkinos, Alberto Sanfeliu, Francesc Moreno-Noguer

In this work we exploit segmentation to construct appearance descriptors that can robustly deal with occlusion and background changes.

Motion Estimation Segmentation

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