Model-driven photometric stereo for in-process inspection of non-diffuse curved surfaces

Mingjun Ren, G. Xiao, L. Zhu, Wenhan Zeng, D. Whitehouse

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


This paper presents an in-process inspection approach for quality control of non-diffuse curved surfaces based upon an evolution of conventional photometric stereo. An inverse reflectance model is proposed to reveal the non-linear reflectance behaviour of general non-diffuse surfaces from images based on a neural network. The model can directly be used to drive a high accurate photometric stereo which only requires a single RGB image with a pre-captured collocated image. This allows the technique to realize in-process inspection of moving surfaces with micro-second level capturing rate. Experimental study confirms the excellent texture recovery and defect detection capabilities in mass production.

Original languageEnglish
Pages (from-to)563-566
Number of pages4
JournalCIRP Annals
Issue number1
Early online date24 Apr 2019
Publication statusPublished - 2019


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