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ACM Transactions on Graphics (TOG), Volume 34 Issue 5, October 2015

Learning to Remove Soft Shadows
Maciej Gryka, Michael Terry, Gabriel J. Brostow
Article No.: 153
DOI: 10.1145/2732407

Manipulated images lose believability if the user's edits fail to account for shadows. We propose a method that makes removal and editing of soft shadows easy. Soft shadows are ubiquitous, but remain notoriously difficult to extract and...

SemanticPaint: Interactive 3D Labeling and Learning at your Fingertips
Julien Valentin, Vibhav Vineet, Ming-Ming Cheng, David Kim, Jamie Shotton, Pushmeet Kohli, Matthias Nießner, Antonio Criminisi, Shahram Izadi, Philip Torr
Article No.: 154
DOI: 10.1145/2751556

We present a new interactive and online approach to 3D scene understanding. Our system, SemanticPaint, allows users to simultaneously scan their environment whilst interactively segmenting the scene simply by reaching out and touching any...

Sketching Folds: Developable Surfaces from Non-Planar Silhouettes
Amaury Jung, Stefanie Hahmann, Damien Rohmer, Antoine Begault, Laurence Boissieux, Marie-Paule Cani
Article No.: 155
DOI: 10.1145/2749458

We present the first sketch-based modeling method for developable surfaces with pre-designed folds, such as garments or leather products. The main challenge we address for building folded surfaces from sketches is that silhouette strokes on the...

Phasor Imaging: A Generalization of Correlation-Based Time-of-Flight Imaging
Mohit Gupta, Shree K. Nayar, Matthias B. Hullin, Jaime Martin
Article No.: 156
DOI: 10.1145/2735702

In correlation-based time-of-flight (C-ToF) imaging systems, light sources with temporally varying intensities illuminate the scene. Due to global illumination, the temporally varying radiance received at the sensor is a combination of...

Multiway K-Clustered Tensor Approximation: Toward High-Performance Photorealistic Data-Driven Rendering
Yu-Ting Tsai
Article No.: 157
DOI: 10.1145/2753756

This article presents a generalized sparse multilinear model, namely multiway K-clustered tensor approximation (MK-CTA), for synthesizing photorealistic 3D images from large-scale multidimensional visual datasets. MK-CTA extends previous...

Approximate Translational Building Blocks for Image Decomposition and Synthesis
Chuan Li, Michael Wand
Article No.: 158
DOI: 10.1145/2757287

We introduce approximate translational building blocks for unsupervised image decomposition. Such building blocks are frequently appearing copies of image patches that are mapped coherently under translations.

We exploit the coherency...

Online Structure Analysis for Real-Time Indoor Scene Reconstruction
Yizhong Zhang, Weiwei Xu, Yiying Tong, Kun Zhou
Article No.: 159
DOI: 10.1145/2768821

We propose a real-time approach for indoor scene reconstruction. It is capable of producing a ready-to-use 3D geometric model even while the user is still scanning the environment with a consumer depth camera. Our approach features explicit...

Continuum Foam: A Material Point Method for Shear-Dependent Flows
Yonghao Yue, Breannan Smith, Christopher Batty, Changxi Zheng, Eitan Grinspun
Article No.: 160
DOI: 10.1145/2751541

We consider the simulation of dense foams composed of microscopic bubbles, such as shaving cream and whipped cream. We represent foam not as a collection of discrete bubbles, but instead as a continuum. We employ the material point method...

Efficient and Accurate Spherical Kernel Integrals Using Isotropic Decomposition
Cyril Soler, Mahdi M. Bagher, Derek Nowrouzezahrai
Article No.: 161
DOI: 10.1145/2797136

Spherical filtering is fundamental to many problems in image synthesis, such as computing the reflected light over a surface or anti-aliasing mirror reflections over a pixel. This operation is challenging since the profile of spherical filters...

Modeling Character Canvases from Cartoon Drawings
Mikhail Bessmeltsev, Will Chang, Nicholas Vining, Alla Sheffer, Karan Singh
Article No.: 162
DOI: 10.1145/2801134

We introduce a novel technique for the construction of a 3D character proxy, or canvas, directly from a 2D cartoon drawing and a user-provided correspondingly posed 3D skeleton. Our choice of input is motivated by the observation that...

Band-Sifting Decomposition for Image-Based Material Editing
Ivaylo Boyadzhiev, Kavita Bala, Sylvain Paris, Edward Adelson
Article No.: 163
DOI: 10.1145/2809796

Photographers often “prep” their subjects to achieve various effects; for example, toning down overly shiny skin, covering blotches, etc. Making such adjustments digitally after a shoot is possible, but difficult without good tools and...

Multiview Intrinsic Images of Outdoors Scenes with an Application to Relighting
Sylvain Duchêne, Clement Riant, Gaurav Chaurasia, Jorge Lopez Moreno, Pierre-Yves Laffont, Stefan Popov, Adrien Bousseau, George Drettakis
Article No.: 164
DOI: 10.1145/2756549

We introduce a method to compute intrinsic images for a multiview set of outdoor photos with cast shadows, taken under the same lighting. We use an automatic 3D reconstruction from these photos and the sun direction as input and decompose each...