Search Results for author: Diego Gutierrez

Found 15 papers, 2 papers with code

Sparse Ellipsometry: Portable Acquisition of Polarimetric SVBRDF and Shape with Unstructured Flash Photography

1 code implementation9 Jul 2022 Inseung Hwang, Daniel S. Jeon, Adolfo Muñoz, Diego Gutierrez, Xin Tong, Min H. Kim

Ellipsometry techniques allow to measure polarization information of materials, requiring precise rotations of optical components with different configurations of lights and sensors.

Data Augmentation

Single-image Full-body Human Relighting

no code implementations15 Jul 2021 Manuel Lagunas, Xin Sun, Jimei Yang, Ruben Villegas, Jianming Zhang, Zhixin Shu, Belen Masia, Diego Gutierrez

We present a single-image data-driven method to automatically relight images with full-body humans in them.

Image Reconstruction

Virtual Light Transport Matrices for Non-Line-Of-Sight Imaging

no code implementations ICCV 2021 Julio Marco, Adrian Jarabo, Ji Hyun Nam, Xiaochun Liu, Miguel Ángel Cosculluela, Andreas Velten, Diego Gutierrez

The light transport matrix (LTM) is an instrumental tool in line-of-sight (LOS) imaging, describing how light interacts with the scene and enabling applications such as relighting or separation of illumination components.

The joint role of geometry and illumination on material recognition

no code implementations7 Jan 2021 Manuel Lagunas, Ana Serrano, Diego Gutierrez, Belen Masia

In this work, we perform a comprehensive and systematic analysis of how the interplay of geometry, illumination, and their spatial frequencies affects human performance on material recognition tasks.

Material Recognition

A Similarity Measure for Material Appearance

1 code implementation4 May 2019 Manuel Lagunas, Sandra Malpica, Ana Serrano, Elena Garces, Diego Gutierrez, Belen Masia

We present a model to measure the similarity in appearance between different materials, which correlates with human similarity judgments.

Image Similarity Search

Learning icons appearance similarity

no code implementations1 Feb 2019 Manuel Lagunas, Elena Garces, Diego Gutierrez

Selecting an optimal set of icons is a crucial step in the pipeline of visual design to structure and navigate through content.

Navigate

Virtual Wave Optics for Non-Line-of-Sight Imaging

no code implementations17 Oct 2018 Xiaochun Liu, Ibón Guillén, Marco La Manna, Ji Hyun Nam, Syed Azer Reza, Toan Huu Le, Diego Gutierrez, Adrian Jarabo, Andreas Velten

Since imaging information cannot be recovered from the irradiance arriving at the relay surface, we introduce the concept of the phasor field, a mathematical construct representing a fast variation in irradiance.

Convolutional sparse coding for capturing high speed video content

no code implementations13 Jun 2018 Ana Serrano, Elena Garces, Diego Gutierrez, Belen Masia

Video capture is limited by the trade-off between spatial and temporal resolution: when capturing videos of high temporal resolution, the spatial resolution decreases due to bandwidth limitations in the capture system.

Compressive Sensing

Convolutional Sparse Coding for High Dynamic Range Imaging

no code implementations13 Jun 2018 Ana Serrano, Felix Heide, Diego Gutierrez, Gordon Wetzstein, Belen Masia

Current HDR acquisition techniques are based on either (i) fusing multibracketed, low dynamic range (LDR) images, (ii) modifying existing hardware and capturing different exposures simultaneously with multiple sensors, or (iii) reconstructing a single image with spatially-varying pixel exposures.

Fast Back-Projection for Non-Line of Sight Reconstruction

no code implementations6 Mar 2017 Victor Arellano, Diego Gutierrez, Adrian Jarabo

These works combine ultrafast imaging systems with computation, which back-projects the recorded space-time signal to build a probabilistic map of the hidden geometry.

A Computational Model of a Single-Photon Avalanche Diode Sensor for Transient Imaging

no code implementations23 Feb 2017 Quercus Hernandez, Diego Gutierrez, Adrian Jarabo

In this work we describe a computational model to simulate the behaviour of SPAD sensors, aiming to provide a realistic camera model for time-resolved light transport simulation, with applications on prototyping new reconstructions techniques based on SPAD time-of-flight data.

How do people explore virtual environments?

no code implementations13 Dec 2016 Vincent Sitzmann, Ana Serrano, Amy Pavel, Maneesh Agrawala, Diego Gutierrez, Belen Masia, Gordon Wetzstein

Understanding how people explore immersive virtual environments is crucial for many applications, such as designing virtual reality (VR) content, developing new compression algorithms, or learning computational models of saliency or visual attention.

Recent Advances in Transient Imaging: A Computer Graphics and Vision Perspective

no code implementations3 Nov 2016 Adrian Jarabo, Belen Masia, Julio Marco, Diego Gutierrez

Transient imaging has recently made a huge impact in the computer graphics and computer vision fields.

PICO

Intrinsic Light Field Images

no code implementations15 Aug 2016 Elena Garces, Jose I. Echevarria, Wen Zhang, Hongzhi Wu, Kun Zhou, Diego Gutierrez

We present a method to automatically decompose a light field into its intrinsic shading and albedo components.

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