One-Day Outdoor Photometric Stereo Using Skylight Estimation

Jiyoung Jung, Joon Young Lee, In So Kweon

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


We present an outdoor photometric stereo method using images captured in a single day. We simulate a sky hemisphere for each image according to its GPS and timestamp and parameterize the obtained sky hemisphere into quadratic skylight and Gaussian sunlight distributions. Our previous work recovered an outdoor scene on a clear day, whereas the current paper shows that cloudy days can provide better illumination conditions for surface orientation recovery, and hence we propose a modified sky model to represent a well-conditioned skylight distribution for outdoor photometric stereo. The proposed method models natural illumination according to a sky model, providing sufficient constraints for shape reconstruction from 1-day images. We tested the proposed method to recover various sized objects and scenes from real-world outdoor daylight images and verified the method using synthetic and real data experiments.

Original languageEnglish
Pages (from-to)1126-1142
Number of pages17
JournalInternational Journal of Computer Vision
Issue number8
StatePublished - 1 Aug 2019


  • Light modeling
  • Outdoor illumination
  • Photometric stereo
  • Scene reconstruction
  • Skylight estimation


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