Unsupervised Deep Single-Image Intrinsic Decomposition using Illumination-Varying Image Sequences

dc.contributor.authorLettry, Louisen_US
dc.contributor.authorVanhoey, Kennethen_US
dc.contributor.authorVan Gool, Lucen_US
dc.contributor.editorFu, Hongbo and Ghosh, Abhijeet and Kopf, Johannesen_US
dc.date.accessioned2018-10-07T15:00:26Z
dc.date.available2018-10-07T15:00:26Z
dc.date.issued2018
dc.description.abstractMachine learning based Single Image Intrinsic Decomposition (SIID) methods decompose a captured scene into its albedo and shading images by using the knowledge of a large set of known and realistic ground truth decompositions. Collecting and annotating such a dataset is an approach that cannot scale to sufficient variety and realism. We free ourselves from this limitation by training on unannotated images. Our method leverages the observation that two images of the same scene but with different lighting provide useful information on their intrinsic properties: by definition, albedo is invariant to lighting conditions, and cross-combining the estimated albedo of a first image with the estimated shading of a second one should lead back to the second one's input image. We transcribe this relationship into a siamese training scheme for a deep convolutional neural network that decomposes a single image into albedo and shading. The siamese setting allows us to introduce a new loss function including such cross-combinations, and to train solely on (time-lapse) images, discarding the need for any ground truth annotations. As a result, our method has the good properties of i) taking advantage of the time-varying information of image sequences in the (pre-computed) training step, ii) not requiring ground truth data to train on, and iii) being able to decompose single images of unseen scenes at runtime. To demonstrate and evaluate our work, we additionally propose a new rendered dataset containing illumination-varying scenes and a set of quantitative metrics to evaluate SIID algorithms. Despite its unsupervised nature, our results compete with state of the art methods, including supervised and non data-driven methods.en_US
dc.description.number7
dc.description.sectionheadersImage Decomposition and Recoloring
dc.description.seriesinformationComputer Graphics Forum
dc.description.volume37
dc.identifier.doi10.1111/cgf.13578
dc.identifier.issn1467-8659
dc.identifier.pages409-419
dc.identifier.urihttps://doi.org/10.1111/cgf.13578
dc.identifier.urihttps://diglib.eg.org:443/handle/10.1111/cgf13578
dc.publisherThe Eurographics Association and John Wiley & Sons Ltd.en_US
dc.titleUnsupervised Deep Single-Image Intrinsic Decomposition using Illumination-Varying Image Sequencesen_US
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