Appearance Bending: A Perceptual Editing Paradigm for Data-Driven Material Models

We present a model to measure the similarity in appearance between different materials, which correlates with human similarity judgments. We first create a database of 9,000 rendered images depicting objects with varying materials, shape and illumination. We then gather data on perceived similarity from crowdsourced experiments; our analysis of over 114,840 answers suggests that indeed a shared perception of appearance similarity exists. We feed this data to a deep learning architecture with a novel loss function, which learns a feature space for materials that correlates with such perceived appearance similarity. Our evaluation shows that our model outperforms existing metrics. Last, we demonstrate several applications enabled by our metric, including appearance-based search for material suggestions, database visualization, clustering and summarization, and gamut mapping.

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Linear Subspaces of the Appearance Space

Mylo

Klein

2018

JWSCG

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Manipulating digital optical material representations is still a difficult problem because arbitrary manipulations lead almost certainly to an unrealistic impression of the material. In this paper we present an approach to material editing based on a digital model of the V1-area of the visual cortex. The V1-model is used to define the appearance space as the space of weighted sums of the cortical-model filter responses. We will show that it is possible to transform several optical material manipulation schemes into our editing scheme. As those optical material manipulation schemes may also be physical phenomena, we may introduce a new material edit. Our argumentation will be supported by comparing editing-examples.

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Appearance Bending: A Perceptual Editing Paradigm for Data-Driven Material Models

Cited by 3 publications

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Evaluating physical and rendered material appearance

Evaluating physical and rendered material appearance

A similarity measure for material appearance

Linear Subspaces of the Appearance Space

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