Color Independent Quality Assessment of 3D Printed Surfaces Based on Image Entropy

  • Krzysztof Okarma
  • Jarosław Fastowicz
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 578)


The paper is focused on the issue of visual quality assessment of 3D printed surfaces which can be helpful in detection of quality decrease during the printing process as well as the quality inspection of previously printed objects. The basic assumption of the proposed approach is the fact that each distortion of the regular patterns, visible on the side surfaces of objects printed using Fused Deposition Modeling (FDM) technology, causes the increase of the local image entropy. However, due to different colors of the filaments used in our experiments, a reliable prediction of the absolute entropy values can be troublesome. The proposed solution utilizes the combined quality indicator based on the entropy and its variance calculated for the hue component, as well as for the RGB channels, depending on the color of the filament, allowing proper detection of low quality surfaces regardless of the filament’s color.


3D prints Entropy Image quality assessment Image analysis 


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© Springer International Publishing AG 2018

Authors and Affiliations

  1. 1.Department of Signal Processing and Multimedia Engineering, Faculty of Electrical EngineeringWest Pomeranian University of Technology, SzczecinSzczecinPoland

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