Publication
Real-time, high-speed video decompression using a frame- and event-based DAVIS sensor
Publications associées (61)
Subjective performance evaluation of bitrate allocation strategies for MPEG and JPEG Pleno point cloud compression
Touradj Ebrahimi, Michela Testolina, Davi Nachtigall Lazzarotto
The recent rise in interest in point clouds as an imaging modality has motivated standardization groups such as JPEG and MPEG to launch activities aiming at developing compression standards for point clouds. Lossy compression usually introduces visual arti ...
Springer2024Temporal Conditional Coding for Dynamic Point Cloud Geometry Compression
Point clouds allow for the representation of 3D multimedia content as a set of disconnected points in space. Their inher- ent irregular geometric nature poses a challenge to efficient compression, a critical operation for both storage and trans- mission. T ...
2024Evaluation of the impact of lossy compression on event camera-based computer vision tasks
Touradj Ebrahimi, Davi Nachtigall Lazzarotto, Bowen Huang
In the field of image acquisition, Dynamic Vision Sensors (DVS) present an innovative methodology, capturing only the variations in pixel brightness instead of absolute values and thereby revealing unique features. Given that the primary deployment of DVS ...
2023Vertical and Leg Stiffness Modeling During Running: Effect of Speed and Incline
Kamiar Aminian, Frédéric Meyer, Grégoire Millet, Mathieu Pascal Falbriard
A spring mass model is often used to describe human running, allowing to understand the concept of elastic energy storage and restitution. The stiffness of the spring is a key parameter and different methods have been developed to estimate both the vertica ...
GEORG THIEME VERLAG KG2023Latent Space Slicing for Enhanced Entropy Modeling in Learning-Based Point Cloud Geometry Compression
The growing adoption of point clouds as an imaging modality has stimulated the search for efficient solutions for compression. Learning-based algorithms have been reporting increasingly better performance and are drawing the attention from the research com ...
IEEE2022Volume change response and fabric evolution of granular MX80 bentonite along different hydro-mechanical stress paths
Alessio Ferrari, Jose Antonio Bosch Llufriu, Patrycja Ewelina Baryla
Despite the increasing understanding of bentonite behaviour, there is still missing evidence on how different hydro-mechanical loadings, including sequences of hydration and compression, affect the fabric and the volume change behaviour of the material. It ...
Springer Nature2022High-Throughput Lossy-to-Lossless 3D Image Compression
Gilles Fourestey, Félix Schmidt
The rapid increase in medical and biomedical image acquisition rates has opened up new avenues for image analysis, but has also introduced formidable challenges. This is evident, for example, in selective plane illumination microscopy where acquisition rat ...
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2021Large-Scale Crowdsourcing Subjective Quality Evaluation of Learning-Based Image Coding
Touradj Ebrahimi, Evgeniy Upenik, Michela Testolina
Learning-based image codecs produce different compression artifacts, when compared to the blocking and blurring degradation introduced by conventional image codecs, such as JPEG, JPEG~2000 and HEIC. In this paper, a crowdsourcing based subjective quality e ...
IEEE2021Image Compression and Quality Assessment using Convolutional Neural Networks
The rapid development of digital imaging and video has placed visual contents in the heart of our lives. Digital multimedia span a vast number of areas from business to leisure, including but not limited to education, medicine, accessibility, training, adv ...
EPFL2020Towards Continuous and Ambulatory Blood Pressure Monitoring: Methods for Efficient Data Acquisition for Pulse Transit Time Estimation
We developed a prototype for measuring physiological data for pulse transit time (PTT) estimation that will be used for ambulatory blood pressure (BP) monitoring. The device is comprised of an embedded system with multimodal sensors that streams high-throu ...
2020