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Single Day Outdoor Photometric Stereo
[article]
2019
arXiv
pre-print
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Photometric Stereo (PS) under outdoor illumination remains a challenging, ill-posed problem due to insufficient variability in illumination. ...
In this paper, we investigate the solution of outdoor PS over a single day, under different weather conditions. ...
Since [20] and calibrated [8] cases, deep photometric stereo [31] and single image normal estimation [24] , [26] (averaged over the day) on our real lighting dataset. ...
arXiv:1803.10850v3
fatcat:n4ucn7xefjcxfmb6nnqfvlkzkm
Time-Lapse Photometric Stereo and Applications
2014
Computer graphics forum (Print)
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This allows us to estimate approximate surface normals for outdoor scenes using a single day of data. ...
We build upon photometric stereo techniques to recover approximate shadowing, shading and normal components allowing us to alter the material and normals of the scene. ...
This representation indicates the difficulties in applying photometric stereo directly to outdoor time-lapse images. ...
doi:10.1111/cgf.12504
fatcat:pqfsldx4vja5ziezk2sopncrga
One-day outdoor photometric stereo via skylight estimation
2015
2015 IEEE Conference on Computer Vision and Pattern Recognition (CVPR)
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We present an outdoor photometric stereo method using images captured in a single day. ...
thus provides sufficient constraints for shape reconstruction from one day images. ...
[12] refine the multi-view stereo result of an outdoor scene by using one day images for photometric stereo. ...
doi:10.1109/cvpr.2015.7299082
dblp:conf/cvpr/JungLK15
fatcat:yr5ybdx5azbqfklamisz7lox24
What Is a Good Day for Outdoor Photometric Stereo?
2015
2015 IEEE International Conference on Computational Photography (ICCP)
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Outdoor photometric stereo presents additional challenges as one does not have control over illumination anymore. In this paper, we explore the stability of surface normals reconstructed outdoors. ...
Photometric Stereo has been explored extensively in laboratory conditions since its inception. Recently, attempts have been made at applying this technique under natural outdoor lighting. ...
Or, in other words: what makes it a good day for outdoor Photometric Stereo? ...
doi:10.1109/iccphot.2015.7168379
dblp:conf/iccp/Hold-GeoffroyZG15
fatcat:h2f3gvgoyzexjbn5kgyvnuonte
Photometric stereo for outdoor webcams
2012
2012 IEEE Conference on Computer Vision and Pattern Recognition
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We present a photometric stereo technique that operates on time-lapse sequences captured by static outdoor webcams over the course of several months. ...
Finally, we describe a new photometric stereo technique for non-Lambertian scenes and unknown light source intensities to recover normal maps and spatially varying materials of the scene. ...
In particular, to our knowledge, no complete photometric stereo approach has been demonstrated on outdoor webcam data. ...
doi:10.1109/cvpr.2012.6247684
dblp:conf/cvpr/AckermannLFG12
fatcat:jre5gzwvwbfv3frtj73d5f2twe
Heliometric Stereo: Shape from Sun Position
[chapter]
2012
Lecture Notes in Computer Science
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We present a variant of photometric stereo which uses the sun as a distant light source, so that lighting direction can be computed from known GPS and timestamps. ...
Unlike many approaches to uncalibrated outdoor image analysis, this procedure is automatic, and we report quantitative results by comparing extracted surface normals to Google Earth 3D models. ...
There is less work on outdoor, uncalibrated photometric stereo. ...
doi:10.1007/978-3-642-33709-3_26
fatcat:47zicyul4zdztfd7tiwmhvapta
Outdoor photometric stereo
2013
IEEE International Conference on Computational Photography (ICCP)
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We introduce a framework for outdoor photometric stereo utilizing natural environmental illumination. ...
Our framework extends beyond existing photometric stereo methods intended for laboratory environments to encompass robust outdoor operation in the real world. ...
throughout a day. ...
doi:10.1109/iccphot.2013.6528306
dblp:conf/iccp/YuYTTC13
fatcat:twszqqnsb5bgtiphng7tgjulz4
Photometric stereo and weather estimation using internet images
2009
2009 IEEE Conference on Computer Vision and Pattern Recognition
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We extend photometric stereo to make it work with internet images, which are typically associated with different viewpoints and significant noise. ...
Photometric Stereo under General Lighting The theoretic framework for photometric stereo under general lighting is developed in [1, 12] . ...
It presents a serious challenge for traditional photometric stereo. ...
doi:10.1109/cvprw.2009.5206732
fatcat:7g7kiq6c7fdnbfewk6kjt2we7q
Photometric stereo and weather estimation using internet images
2009
2009 IEEE Conference on Computer Vision and Pattern Recognition
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We extend photometric stereo to make it work with internet images, which are typically associated with different viewpoints and significant noise. ...
Photometric Stereo under General Lighting The theoretic framework for photometric stereo under general lighting is developed in [1, 12] . ...
It presents a serious challenge for traditional photometric stereo. ...
doi:10.1109/cvpr.2009.5206732
dblp:conf/cvpr/ShenT09
fatcat:upd6idrb65hrbijhvmypn6h4vu
x-Hour Outdoor Photometric Stereo
2015
2015 International Conference on 3D Vision
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This work provides, for the first time, a detailed analysis of the factors affecting the performance of x-hour outdoor photometric stereo. ...
While Photometric Stereo (PS) has long been confined to the lab, there has been a recent interest in applying this technique to reconstruct outdoor objects and scenes. ...
Introduction Since its inception in the early 80s, Photometric Stereo (PS) [23] has been explored under many an angle. ...
doi:10.1109/3dv.2015.11
dblp:conf/3dim/Hold-GeoffroyZG15
fatcat:se4j3xjcubfllmp45ecxepf3de
Removing the Example from Example-Based Photometric Stereo
[chapter]
2012
Lecture Notes in Computer Science
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We introduce an example-based photometric stereo approach that does not require explicit reference objects. ...
Similar to the standard approach, we then transfer normals from reconstructed to unreconstructed regions based on robust photometric matching. ...
In this paper we presented a combination of multi-view stereo and photometric stereo that is able to cope with outdoor imagery and has minimal capturing requirements. ...
doi:10.1007/978-3-642-35740-4_16
fatcat:7xbj3qb6lnfzja4miyhqwjd37i
ACQUISITION AND REPRODUCTION OF SURFACE APPEARANCE IN ARCHITECTURAL ORTHOIMAGES
2015
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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It is suitable for outdoor environments, where the illumination is variable and uncontrolled. ...
Software tools for photogrametric and multi-view stereo reconstruction are nowadays of generalized use in the digitization of architectural cultural heritage. ...
Enhanced detail is achieved thanks to the photometric stereo method. ...
doi:10.5194/isprsarchives-xl-5-w4-139-2015
fatcat:dt5aigbhlnh45mhx5foin3t6qa
Multispectral Transfer Network: Unsupervised Depth Estimation for All-Day Vision
2018
PROCEEDINGS OF THE THIRTIETH AAAI CONFERENCE ON ARTIFICIAL INTELLIGENCE AND THE TWENTY-EIGHTH INNOVATIVE APPLICATIONS OF ARTIFICIAL INTELLIGENCE CONFERENCE
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In experiments, we demonstrate the better performance and generalization of depth estimation through the proposed multispectral stereo dataset, including various driving conditions. ...
To understand the real-world, it is essential to perceive in all-day conditions including cases which are not suitable for RGB sensors, especially at night. ...
In outdoor scenarios, a 3D laser scanner is usually used to capture depth data. ...
doi:10.1609/aaai.v32i1.12297
fatcat:sgdvfpyklnb37mr4f3sklw3fzi
A Survey of Photometric Stereo Techniques
2015
Foundations and Trends in Computer Graphics and Vision
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A Survey of Photometric Stereo Techniques. ...
A Survey of Photometric Stereo Techniques. ...
Toby Collins and Adrien Bartoli. 3D reconstruction in laparoscopy with closerange photometric stereo. ...
doi:10.1561/0600000065
fatcat:7zx7zhrscrbhhhsdyzab52o2wu
Shadow Estimation Method for "The Episolar Constraint: Monocular Shape from Shadow Correspondence"
[article]
2013
arXiv
pre-print
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Finally, we demonstrate that the shadow masks derived through this algorithm substantially improve the performance of sun-based photometric stereo compared to earlier shadow mask estimation. ...
This is the approach used in [2] for outdoor photometric stereo. ...
[1] which solve the photometric stereo problem for outdoor webcams. Sunkavalli et al. ...
arXiv:1304.4112v1
fatcat:zc3iyqsquzai7nxcjgccpetiim
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