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Single Day Outdoor Photometric Stereo [article]

Yannick Hold-Geoffroy, Paulo F.U. Gotardo, Jean-François Lalonde
2019 arXiv   pre-print
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

Fangyang Shen, Kalyan Sunkavalli, Nicolas Bonneel, Szymon Rusinkiewicz, Hanspeter Pfister, Xin Tong
2014 Computer graphics forum (Print)  
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

Jiyoung Jung, Joon-Young Lee, In So Kweon
2015 2015 IEEE Conference on Computer Vision and Pattern Recognition (CVPR)  
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?

Yannick Hold-Geoffroy, Jinsong Zhang, Paulo F.U. Gotardo, Jean-Francois Lalonde
2015 2015 IEEE International Conference on Computational Photography (ICCP)  
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

J. Ackermann, F. Langguth, S. Fuhrmann, M. Goesele
2012 2012 IEEE Conference on Computer Vision and Pattern Recognition  
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]

Austin Abrams, Christopher Hawley, Robert Pless
2012 Lecture Notes in Computer Science  
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

Lap-Fai Yu, Sai-Kit Yeung, Yu-Wing Tai, D. Terzopoulos, T. F. Chan
2013 IEEE International Conference on Computational Photography (ICCP)  
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

Li Shen, Ping Tan
2009 2009 IEEE Conference on Computer Vision and Pattern Recognition  
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

Li Shen, Ping Tan
2009 2009 IEEE Conference on Computer Vision and Pattern Recognition  
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

Yannick Hold-Geoffroy, Jinsong Zhang, Paulo F.U. Gotardo, Jean-Francois Lalonde
2015 2015 International Conference on 3D Vision  
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]

Jens Ackermann, Martin Ritz, André Stork, Michael Goesele
2012 Lecture Notes in Computer Science  
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

A. Martos, R. Cachero
2015 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
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

Namil Kim, Yukyung Choi, Soonmin Hwang, In So Kweon
2018 PROCEEDINGS OF THE THIRTIETH AAAI CONFERENCE ON ARTIFICIAL INTELLIGENCE AND THE TWENTY-EIGHTH INNOVATIVE APPLICATIONS OF ARTIFICIAL INTELLIGENCE CONFERENCE  
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

Jens Ackermann, Michael Goesele
2015 Foundations and Trends in Computer Graphics and Vision  
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]

Austin Abrams, Chris Hawley, Kylia Miskell, Adina Stoica, Nathan Jacobs, Robert Pless
2013 arXiv   pre-print
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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