Density estimation for dynamic volumes
Computers and Graphics
Hair photobooth: geometric and photometric acquisition of real hairstyles
ACM SIGGRAPH 2008 papers
Fluorescent immersion range scanning
ACM SIGGRAPH 2008 papers
ACM SIGGRAPH 2009 Courses
Median Photometric Stereo as Applied to the Segonko Tumulus and Museum Objects
International Journal of Computer Vision
Descattering transmission via angular filtering
ECCV'10 Proceedings of the 11th European conference on Computer vision: Part I
Hemispherical confocal imaging using turtleback reflector
ACCV'10 Proceedings of the 10th Asian conference on Computer vision - Volume Part I
A Combined Theory of Defocused Illumination and Global Light Transport
International Journal of Computer Vision
Combining confocal imaging and descattering
EGSR'08 Proceedings of the Nineteenth Eurographics conference on Rendering
Shape from single scattering for translucent objects
ECCV'12 Proceedings of the 12th European conference on Computer Vision - Volume Part II
Refractive calibration of underwater cameras
ECCV'12 Proceedings of the 12th European conference on Computer Vision - Volume Part V
International Journal of Computer Vision
ACM Transactions on Graphics (TOG)
Multi-projector color structured-light vision
Image Communication
Evaluating the effect of diffuse light on photometric stereo reconstruction
Machine Vision and Applications
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Virtually all structured light methods assume that the scene and the sources are immersed in pure air and that light is neither scattered nor absorbed. Recently, however, structured lighting has found growing application in underwater and aerial imaging, where scattering effects cannot be ignored. In this paper, we present a comprehensive analysis of two representative methods - light stripe range scanning and photometric stereo - in the presence of scattering. For both methods, we derive physical models for the appearances of a surface immersed in a scattering medium. Based on these models, we present results on (a) the condition for object detectability in light striping and (b) the number of sources required for photometric stereo. In both cases, we demonstrate that while traditional methods fail when scattering issignificant, our methods accurately recover the scene (depths, normals, albedos) as well as the properties of the medium. These results are in turn used to restore the appearances of scenes as if they were captured in clear air. Although we have focused on light striping and photometric stereo, our approach can also be extended to other methods such as grid coding, gated and active polarization imaging.