Use of non-photorealistic rendering and photometric stereo in making bas-reliefs from photographs

J. Wu*, Ralph Robert Martin, P. L. Rosin, X. F. Sun, Y. K. Lai, Y. H. Liu, C. Wallraven

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (SciVal)

Abstract

Automatic bas-relief generation from 2D photographs potentially has applications to coinage, commemorative medals and souvenirs. However, current methods are not yet ready for real use in industry due to insufficient artistic effect, noticeable distortion, and unbalanced contrast. We previously proposed a shape-from-shading (SFS) based method to automatically generate bas-reliefs from single frontal photographs of human faces; however, suppression of unwanted details remained a problem. Here, we give experimental results showing how incorporating non-photorealistic rendering (NPR) into our previous framework enables us to both suppress unwanted detail, and yet also emphasize important features. We have consider an alternative approach to recovering relief shape, based on photometric stereo instead of SFS for surface orientation estimation. This can effectively reduce the computational time.

Original languageEnglish
Pages (from-to)202-213
Number of pages12
JournalGraphical Models
Volume76
Issue number4
Early online date28 Feb 2014
DOIs
Publication statusPublished - 01 Jul 2014

Keywords

  • Bas-relief
  • Non-photorealistic rendering
  • Photometric stereo
  • Shape-from-shading

Fingerprint

Dive into the research topics of 'Use of non-photorealistic rendering and photometric stereo in making bas-reliefs from photographs'. Together they form a unique fingerprint.

Cite this