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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 16 — Aug. 7, 2006
  • pp: 7099–7108

Separation and contrast enhancement of overlapping cast shadow components using polarization

Shih-Schön Lin, Konstantin M. Yemelyanov, Edward N. Pugh, Jr., and Nader Engheta  »View Author Affiliations


Optics Express, Vol. 14, Issue 16, pp. 7099-7108 (2006)
http://dx.doi.org/10.1364/OE.14.007099


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Abstract

Shadow is an inseparable aspect of all natural scenes. When there are multiple light sources or multiple reflections several different shadows may overlap at the same location and create complicated patterns. Shadows are a potentially good source of information about a scene if the shadow regions can be properly identified and segmented. However, shadow region identification and segmentation is a difficult task and improperly identified shadows often interfere with machine vision tasks like object recognition and tracking. We propose here a new shadow separation and contrast enhancement method based on the polarization of light. Polarization information of the scene captured by our polarization-sensitive camera is shown to separate shadows from different light sources effectively. Such shadow separation is almost impossible to realize with conventional, polarization-insensitive imaging.

© 2006 Optical Society of America

OCIS Codes
(100.0100) Image processing : Image processing
(150.0150) Machine vision : Machine vision
(230.5440) Optical devices : Polarization-selective devices
(260.5430) Physical optics : Polarization

ToC Category:
Machine Vision

History
Original Manuscript: April 14, 2006
Revised Manuscript: May 29, 2006
Manuscript Accepted: May 30, 2006
Published: August 7, 2006

Citation
Shih-Schön Lin, Konstantin M. Yemelyanov, Edward N. Pugh, Jr., and Nader Engheta, "Separation and contrast enhancement of overlapping cast shadow components using polarization," Opt. Express 14, 7099-7108 (2006)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-16-7099


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References

  1. M. Nagao, T. Matsutyama, and Y. Ikeda, "Region extraction and shape analysis in aerial photographs," Comput. Vis. Graph. Image Process. 10,195-223 (1979). [CrossRef]
  2. R. Gershon, A. D. Jepson, and J. K. Tsotsos, "Ambient illumination and the determination of material changes," J. Opt. Soc. Am. A 3,1700-1707 (1986). [CrossRef] [PubMed]
  3. R. Irvin and D. Mckeown, "Methods for exploiting the relationship between buildings and their shadows in aerial imagery," IEEE Trans. on Syst. Man.Cybern. 19,1564-1575 (1989). [CrossRef]
  4. J. M. Scanlan, D. M. Chabries, and R. W. Christiansen, "A Shadow Detection and Removal Algorithm for 2D Images," in Proc. of Int. Conf. on Acoustics, Speech, and Signal Processing (1990) pp. 2057-2060.
  5. Y. Liow and T. Pavlidis, "Use of shadows for extracting buildings in aerial images," Comput. Vis. Graph. Image Process. 49,242-277 (1991). [CrossRef]
  6. C. Wang, L. Huang, and A. Rosenfeld, "Detecting clouds and cloud shadows on aerial photographs," Pattern. Recogn. Lett. 12,55-64 (1991). [CrossRef]
  7. D. Koller, K. Danilidis, and H.-H. Nagel, "Model-based object tracking in monocular image sequences of road traffic scenes," Int. J. Comput. Vis. 10,257-281 (1993). [CrossRef]
  8. C. Jiang and M. O. Ward, "Shadow segmentation and classification in a constrained environment," CVGIP: Image Understanding 59,213-225 (1994). [CrossRef]
  9. G. Funka-Lea and R. Bajcsy, "Combining color and geometry for the active visual recognition of shadows," in Proc. Int. Conf. on Computer Vision (1995) pp. 203-209.
  10. J. Stauder, R. Melch, and J. Ostermann, "Detection of moving cast shadows for object segmentation," IEEE Trans. Multimedia 1,65-77 (1999). [CrossRef]
  11. J. A. Marchant and C. M. Onyango, "Shadow-invariant classification for scenes illuminated by daylight," J. Opt. Soc. Am. A 17,1952-1961 (2000). [CrossRef]
  12. G. Finlayson, S. Hordley, and M. S. Drew, "Removing shadows from images," in ECCV (2002) pp. 823-836.
  13. R. Cucchiara, C. Grana, M. Piccardi, and A. Prati, "Detecting moving objects, Ghosts, and shadows in video streams," IEEE Trans. Pattern Anal. Mach. Intell. 25,1337-1342 (2003). [CrossRef]
  14. T. Gevers and H. Stokman, "Classifying color edges in video into shadow-geometry, highlight, or material transitions," IEEE Trans. Multimedia 5,237-243 (2003). [CrossRef]
  15. A. Prati, I. Mikic, M. M. Trivedi, and R. Cucchiara, "Detecting Moving Shadows: Algorithms and Evaluation," IEEE Trans. Pattern Anal. Mach. Intell. 25,918-923 (2003). [CrossRef]
  16. I. Sato, Y. Sato, and K. Ikeuchi, "Illumination from shadows," IEEE Trans. Pattern Anal. Mach. Intell. 25,290-300 (2003). [CrossRef]
  17. S. Nadimi and B. Bhanu, "Physical models for moving shadow and object detection in video," IEEE Trans. Pattern Anal. Mach. Intell. 26,1079-1087 (2004). [CrossRef]
  18. E. Salvador, A. Cavallaro, and T. Ebrahimi, "Cast shadow segmentation using invariant color features," Comput. Vis. Image Understand. 95,238-259 (2004). [CrossRef]
  19. J. M. Wang, Y. C. Chung, C. L. Chang, and S. W. Chen, "Shadow Detection and Removal for Traffic Images," in Proc. 2004 IEEE Int. Conf. on Networking, Sensing and Control (IEEE Syst. Man Cybern. Society, Taipei, Taiwan, 2004) pp. 649-654. [CrossRef]
  20. K. Frisch, "Die polarisation des himmelslichtes als orientierender faktor bei den tanzen der bienen," Experientia 5,142-148 (1949). [CrossRef] [PubMed]
  21. R. Wehner, "Polarized-light navigation by insects," Scientific American 235,106-114 (1976). [CrossRef] [PubMed]
  22. R. Schwind, "Zonation of the optical environment and zonation in the rhabdom structure within the eye of the backswimmer, Notenecta glauca," Cell and Tissue Research 232,53-63 (1983). [CrossRef] [PubMed]
  23. G. Horváth, "Reflection polarization patterns at flat water surfaces and their relevance for insect polarization vision," J. Theor. Biol. 175,27-37 (1995). [CrossRef] [PubMed]
  24. M. P. Rowe, E. N. Jr. Pugh, and N. Engheta, "Polarization-difference imaging: a biologically inspired technique for observation through scattering media," Opt. Lett. 20,608-610 (1995). [CrossRef] [PubMed]
  25. J. S. Tyo, M. P. Rowe, E. N. Jr. Pugh, and N. Engheta, "Target detection in optically scatter media by polarization-difference imaging," Appl. Opt. 35,1855-1870 (1996). [CrossRef] [PubMed]
  26. S.-S. Lin, K. M. Yemelyanov, E. N. Jr. Pugh, and N. Engheta, "Polarization Enhanced Visual Surveillance Techniques," in Proc. IEEE Int. Conf. on Networking, Sensing and Control (IEEE Syst. Man..Cybern.Society, Taipei, Taiwan, 2004),  1, pp. 216-221. [CrossRef]
  27. S.-S. Lin, K. M. Yemelyanov, E. N. Jr. Pugh, and N. Engheta, "Polarization- and specular-reflection-based, non-contact latent fingerprint imaging and lifting," J. Opt. Soc. Am. A (to be published).
  28. K. M. Yemelyanov, S.-S. Lin, E. N. Jr. Pugh, and N. Engheta, "Adaptive Algorithms for 2-channel polarization sensing under various polarization statistics with non-uniform distributions," Appl. Opt. (to be published). [PubMed]
  29. J. S. Tyo, E. N. Jr. Pugh, and N. Engheta, "Colorimetric representation for use with polarization-difference imaging of objects in scattering media," J. Opt. Soc. Am. A 15,367-374 (1998). [CrossRef]
  30. K. M. Yemelyanov, M. A. Lo, E. N. Jr. Pugh, and N. Engheta, "Display of polarization information by coherently moving dots," Opt. Express 11,1577-1584 (2003). [CrossRef] [PubMed]
  31. W. G. Egan, "Dark-target retroreflection increase," in Polarization: Measurement, Analysis, and Remote Sensing II, D. H. Goldstein and D. B. Chenault, eds., Proc. SPIE, 3754, 218-225 (1999). [CrossRef]
  32. M. J. Duggin, "Imaging polarimetry in scene element discrimination," in Polarization: Measurement, Analysis, and Remote Sensing II, D. H. Goldstein and D. B. Chenault, eds., Proc SPIE 3754, 108-117 (1999). [CrossRef]
  33. D. H. Goldstein, D. B. Chenault, and J. L. Pezzaniti, "Polarimetric characterization of Spectralon," in Polarization: Measurement, Analysis, and Remote Sensing II, D. H. Goldstein and D. B. Chenault, eds., Proc. SPIE 3754, 126-136 (1999). [CrossRef]
  34. E. Hecht, Optics (Addison Wesley Longman, Inc., Reading, MA, USA 1998).
  35. K. M. Yemelyanov, S.-S. Lin, W. Q. Luis, E. N. Jr. Pugh, and N. Engheta, "Bio-inspired display of polarization information using selected visual cues," in Polarization Science and Remote Sensing, J. A. Shaw and J. S. Tyo eds.Proc. SPIE,  5158,71-84 (2003). [CrossRef]
  36. A. P. Pentland, "Finding the illuminant direction," J. Opt. Soc. Am. 72,448-455 (1982). [CrossRef]
  37. Y. Zhang and Y. Yang, "Illuminant direction determination for multiple light sources," in Proc. CVPR (IEEE, 2000) pp. 269-276.
  38. J. Pinel and H. Nicolas, "Estimation 2d illuminant direction and shadow segmentation in natural video sequences," in Proc. VLBV (2001) pp. 197-202.
  39. M. W. Powell, S. Sarkar, and D. Goldgof, "A simple strategy for calibrating the geometry of light sources," IEEE Trans. Pattern Anal. Mach. Intell. 23,1022-1027 (2001). [CrossRef]

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