Non-rigid Photometric Stereo with Colored Lights

Hernández, C.; Vogiatzis, George; Brostow, Gabriel J.; Stenger, Björn; Cipolla, Roberto

doi:10.1109/iccv.2007.4408939

Cited by 134 publications

(133 citation statements)

References 22 publications

(18 reference statements)

Supporting

Mentioning

133

Contrasting

Order By: Relevance

“…In this work we present a novel method that extends the approach of Hernandez et al [13] to textured surfaces. The principal idea is to track surface motion and exploit the fact that surface colour, i.e.…”

Section: Problem Formulationmentioning

confidence: 99%

“…This is clearly demonstrated by the results: the albedo map is constant over time, the red-green-blue colour changes (visible in the input images) disappear; at the same time, the texture, for instance the stripes of the shirt are not present in the normal image. If we assumed uniform albedo, as in [13], stripes would appear in the normal image, not in the albedo map.…”

Section: Datasetsmentioning

confidence: 99%

“…Note that the related work of Hernandez et al [13] also uses optical flow to track the deformation of the surface. However, they use optical flow after normal and depth maps are already computed and their goal is to put them in correspondence.…”

Section: Optimisationmentioning

confidence: 99%

“…The method of Hernandez et al [13] works on uniformly coloured surfaces, and a calibration tool is employed to estimate this colour. In contrast to them, we do not want to restrict our method to uniform albedos, either not to apply an initial estimation of reflectance properties.…”

Section: Problem Formulationmentioning

confidence: 99%

“…Here all the light sources are in play simultaneously. This category is also termed as colour photometric stereo, as coloured lights are used to recover surface shape [9,[12][13][14].…”

Section: Motivationmentioning

confidence: 99%

See 4 more Smart Citations

Colour Dynamic Photometric Stereo for Textured Surfaces

Jankó

Delaunoy

Prados

2011

Computer Vision – ACCV 2010

View full text Add to dashboard Cite

Abstract. In this paper we present a novel method to apply photometric stereo on textured dynamic surfaces. We aim at exploiting the high accuracy of photometric stereo and reconstruct local surface orientation from illumination changes. The main difficulty derives from the fact that photometric stereo requires varying illumination while the object remains still, which makes it quite impractical to use for dynamic surfaces. Using coloured lights gives a clear solution to this problem; however, the system of equations is still ill-posed and it is ambiguous whether the change of an observed surface colour is due to the change of the surface gradient or of the surface reflectance. In order to separate surface orientation from reflectance, our method tracks texture changes over time and exploits surface reflectance's temporal constancy. This additional constraint allows us to reformulate the problem as an energy functional minimisation, solved by a standard quasi-Newton method. Our method is tested both on real and synthetic data, quantitatively evaluated and compared to a state-of-the-art method.

show abstract

Section: Problem Formulationmentioning

confidence: 99%

Section: Datasetsmentioning

confidence: 99%

Section: Optimisationmentioning

confidence: 99%

Section: Problem Formulationmentioning

confidence: 99%

“…Here all the light sources are in play simultaneously. This category is also termed as colour photometric stereo, as coloured lights are used to recover surface shape [9,[12][13][14].…”

Section: Motivationmentioning

confidence: 99%

See 3 more Smart Citations