A Multispectral Dataset of Oil and Watercolor Paints

Azadeh Asadi Shahmirzadi,Hans-Peter Seidel,Vahid Babaei

doi:10.2352/issn.2470-1173.2020.5.maap-107

Abstract

Designers need to specify the colors for their 3D objects in form of sRGB values, but, given the limitations of the color 3D printing process, they have no idea how those colors chosen on a screen will look once printed in 3D. In addition, HP Inc. wants to showcase the color capabilities of our 3D color printing systems in an effective way. This paper describes an aesthetically pleasing tool to effectively showcase the color capabilities of our color 3D printing systems. It is also a reference color system that enables designers 1) to select colors that are achievable with our printing systems, 2) to interactively composite color palettes for their 3D design and 3) to get the desired printed color in a time and cost-efficient way that minimizes iterations. The system itself consists of a series of subobjects where each sub-object shows how a color looks like when manufactured in different surface orientations. It can be disassembled and used for compositing color palettes for 3D objects, and it is also designed to be manufactured and cleaned fully assembled, showcasing the power of 3D printing.

Highlights

In the majority of available paint datasets [1], a large number of paint tubes are used to get different hues, with black or Titanium white paints added to create different values
As one major motivation of publishing this kind of dataset is fine art reproduction for cultural heritage preservation, paint swatches need to be created following the method of artists
In case of oil paints, a mixture of Zinc and Titanium white is used to lighten up the created hues in different steps

Summary

Introduction

In the majority of available paint datasets [1], a large number of paint tubes are used to get different hues, with black or Titanium white paints added to create different values. Paints are only “computationally” mixed together, or not at all This method has a main disadvantage: painting artists rarely use it. Prominent painting artists use only a limited number of paints. Their so called “limited palette” is highly praised by art critics for better painting unity, balance, color harmony, cool-warm color contrasts, less over-mixing mud, more economical, etc. Watercolor artists avoid white and use water to dilute and lighten up the paints

Experimental Setup

Findings

Conclusion