Abstract
Consider photography in scattering media. One goal is to enhance the images and compensate for scattering effects. A second goal is to estimate a distance map of the scene. A prior method exists to achieve these goals. It is based on acquiring two images from a fixed position, using a single camera mounted with a polarizer at different settings. However, the shortcomings of this polarization-based method comprise having to acquire these images sequentially, reduced light level, and inapplicability at low backscatter degree of polarization. In this paper, a new technique is described to alleviate these issues by integrating polarization and stereo cues. More precisely, the earlier single-camera method is extended to a pair of cameras displaced by a finite baseline. Each camera utilizes polarizers at different settings. Stereo disparity and polarization analysis are fused to construct de-scattered left and right views. The binocular stereo cues provide additional geometric constraints for distance computation. Moreover, the proposed technique acquires the two raw images simultaneously. Thus it can be applied to dynamic scenes. Underwater experiments are presented.
| Original language | English |
|---|---|
| Title of host publication | 2009 Workshop on Applications of Computer Vision, WACV 2009 |
| DOIs | |
| State | Published - Dec 1 2009 |
| Event | 2009 Workshop on Applications of Computer Vision, WACV 2009 - Snowbird, UT, United States Duration: Dec 7 2009 → Dec 8 2009 |
Other
| Other | 2009 Workshop on Applications of Computer Vision, WACV 2009 |
|---|---|
| Country | United States |
| City | Snowbird, UT |
| Period | 12/7/09 → 12/8/09 |
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ASJC Scopus subject areas
- Computer Science Applications
- Computer Vision and Pattern Recognition
Cite this
Enhancing images in scattering media utilizing stereovision and polarization. / Sarafraz, Amin; Negahdaripour, Shahriar; Schechner, Yoav Y.
2009 Workshop on Applications of Computer Vision, WACV 2009. 2009. 5403034.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Enhancing images in scattering media utilizing stereovision and polarization
AU - Sarafraz, Amin
AU - Negahdaripour, Shahriar
AU - Schechner, Yoav Y.
PY - 2009/12/1
Y1 - 2009/12/1
N2 - Consider photography in scattering media. One goal is to enhance the images and compensate for scattering effects. A second goal is to estimate a distance map of the scene. A prior method exists to achieve these goals. It is based on acquiring two images from a fixed position, using a single camera mounted with a polarizer at different settings. However, the shortcomings of this polarization-based method comprise having to acquire these images sequentially, reduced light level, and inapplicability at low backscatter degree of polarization. In this paper, a new technique is described to alleviate these issues by integrating polarization and stereo cues. More precisely, the earlier single-camera method is extended to a pair of cameras displaced by a finite baseline. Each camera utilizes polarizers at different settings. Stereo disparity and polarization analysis are fused to construct de-scattered left and right views. The binocular stereo cues provide additional geometric constraints for distance computation. Moreover, the proposed technique acquires the two raw images simultaneously. Thus it can be applied to dynamic scenes. Underwater experiments are presented.
AB - Consider photography in scattering media. One goal is to enhance the images and compensate for scattering effects. A second goal is to estimate a distance map of the scene. A prior method exists to achieve these goals. It is based on acquiring two images from a fixed position, using a single camera mounted with a polarizer at different settings. However, the shortcomings of this polarization-based method comprise having to acquire these images sequentially, reduced light level, and inapplicability at low backscatter degree of polarization. In this paper, a new technique is described to alleviate these issues by integrating polarization and stereo cues. More precisely, the earlier single-camera method is extended to a pair of cameras displaced by a finite baseline. Each camera utilizes polarizers at different settings. Stereo disparity and polarization analysis are fused to construct de-scattered left and right views. The binocular stereo cues provide additional geometric constraints for distance computation. Moreover, the proposed technique acquires the two raw images simultaneously. Thus it can be applied to dynamic scenes. Underwater experiments are presented.
UR - http://www.scopus.com/inward/record.url?scp=77951173967&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77951173967&partnerID=8YFLogxK
U2 - 10.1109/WACV.2009.5403034
DO - 10.1109/WACV.2009.5403034
M3 - Conference contribution
AN - SCOPUS:77951173967
SN - 9781424454976
BT - 2009 Workshop on Applications of Computer Vision, WACV 2009
ER -