no code implementations • 21 Feb 2023 • Lin Zhang, Tiziano Portenier, Orcun Goksel
We introduce a contrastive learning framework for generating photorealistic images from simulated label maps, by learning from unpaired sets of both.
no code implementations • 9 Jun 2021 • Kevin Thandiackal, Tiziano Portenier, Andrea Giovannini, Maria Gabrani, Orcun Goksel
In this work, we propose Genifer (GENeratIve FEature-driven image Replay), where a generative model is trained to replay images that must induce the same hidden features as real samples when they are passed through the classifier.
no code implementations • 9 Mar 2021 • Devavrat Tomar, Lin Zhang, Tiziano Portenier, Orcun Goksel
Interactive simulation of ultrasound imaging greatly facilitates sonography training.
no code implementations • 23 Feb 2021 • Alvaro Gomariz, Tiziano Portenier, César Nombela-Arrieta, Orcun Goksel
We herein propose a deep learning-based cell detection framework that can operate on large microscopy images and outputs desired probabilistic predictions by (i) integrating Bayesian techniques for the regression of uncertainty-aware density maps, where peak detection can be applied to generate cell proposals, and (ii) learning a mapping from the numerous proposals to a probabilistic space that is calibrated, i. e. accurately represents the chances of a successful prediction.
no code implementations • 27 Jan 2021 • Alvaro Gomariz, Raphael Egli, Tiziano Portenier, César Nombela-Arrieta, Orcun Goksel
However, for combinations that do not exist in a labeled training dataset, one cannot have any estimation of potential segmentation quality if that combination is encountered during inference.
no code implementations • 20 Jan 2021 • Lin Zhang, Tiziano Portenier, Orcun Goksel
Given the high level of expertise required for navigation and interpretation of ultrasound images, computational simulations can facilitate the training of such skills in virtual reality.
no code implementations • 27 Aug 2020 • Alvaro Gomariz, Tiziano Portenier, Patrick M. Helbling, Stephan Isringhausen, Ute Suessbier, César Nombela-Arrieta, Orcun Goksel
Quantitative characterization of structures in acquired images often relies on automatic image analysis methods.
no code implementations • NeurIPS 2020 • Tiziano Portenier, Siavash Bigdeli, Orcun Goksel
Inspired by recent advances in natural texture synthesis, we train deep neural models to generate textures by non-linearly combining learned noise frequencies.
no code implementations • 18 Jun 2020 • Lin Zhang, Tiziano Portenier, Christoph Paulus, Orcun Goksel
To incorporate anatomical information potentially lost in low quality images, we additionally provide segmentation maps to image translation.
2 code implementations • 8 Jan 2020 • Siavash A. Bigdeli, Geng Lin, Tiziano Portenier, L. Andrea Dunbar, Matthias Zwicker
Learning probabilistic models that can estimate the density of a given set of samples, and generate samples from that density, is one of the fundamental challenges in unsupervised machine learning.
Ranked #1 on Density Estimation on UCI MINIBOONE
no code implementations • 15 Mar 2019 • Tiziano Portenier, Qiyang Hu, Paolo Favaro, Matthias Zwicker
In this work, we propose a novel system for smart copy-paste, enabling the synthesis of high-quality results given a masked source image content and a target image context as input.
1 code implementation • 5 Dec 2018 • Qiyang Hu, Adrian Wälchli, Tiziano Portenier, Matthias Zwicker, Paolo Favaro
Because items in an image can be animated in arbitrarily many different ways, we introduce as control signal a sequence of motion strokes.
no code implementations • ECCV 2018 • Attila Szabo, Qiyang Hu, Tiziano Portenier, Matthias Zwicker, Paolo Favaro
We study the problem of building models that can transfer selected attributes from one image to another without affecting the other attributes.
no code implementations • ECCV 2018 • Shihao Wu, Hui Huang, Tiziano Portenier, Matan Sela, Danny Cohen-Or, Ron Kimmel, Matthias Zwicker
To alleviate this restriction, we introduce S2Dnet, a generative adversarial network for transferring multiple views of objects with specular reflection into diffuse ones, so that multi-view reconstruction methods can be applied more effectively.
no code implementations • 24 Apr 2018 • Tiziano Portenier, Qiyang Hu, Attila Szabó, Siavash Arjomand Bigdeli, Paolo Favaro, Matthias Zwicker
We present a novel system for sketch-based face image editing, enabling users to edit images intuitively by sketching a few strokes on a region of interest.
no code implementations • CVPR 2018 • Qiyang Hu, Attila Szabó, Tiziano Portenier, Matthias Zwicker, Paolo Favaro
We learn our representation without any labeling or knowledge of the data domain, using an autoencoder architecture with two novel training objectives: first, we propose an invariance objective to encourage that encoding of each attribute, and decoding of each chunk, are invariant to changes in other attributes and chunks, respectively; second, we include a classification objective, which ensures that each chunk corresponds to a consistently discernible attribute in the represented image, hence avoiding degenerate feature mappings where some chunks are completely ignored.
2 code implementations • ICLR 2018 • Attila Szabó, Qiyang Hu, Tiziano Portenier, Matthias Zwicker, Paolo Favaro
Such models could be used to encode features that can efficiently be used for classification and to transfer attributes between different images in image synthesis.