Robotics and Computer Vision Lab

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International Conference
2014.03.18 11:25

Calibrating a non-isotropic near point light source using a plane

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저 자 Jaesik Park, Sudipta N. Sinha, Yasuyuki Matsushita, Yu-Wing Tai, In So Kweon
학 회 IEEE International Conference on Computer Vision and Pattern Recognition (CVPR)
논문일시(Year) 2014
논문일시(Month) 06
http://rcv.kaist.ac.kr/~jspark/projects/light_calibration/We show that a non-isotropic near point light source rigidly attached to a camera can be calibrated using multiple images of a weakly textured planar scene. We prove that if the radiant intensity distribution (RID) of a light source is radially symmetric with respect to its dominant direction, then the shading observed on a Lambertian scene plane is bilaterally symmetric with respect to a 2D line on the plane. The symmetry axis detected in an image provides a linear constraint for estimating the dominant light axis. The light position and RID parameters can then be estimated using a linear method. Specular highlights if available can also be used for light position estimation. We also extend our method to handle non-Lambertian reflectances which we model using a biquadratic BRDF. We have evaluated our method on synthetic data quantitavely. Our experiments on real scenes show that our method works well in practice and enables light calibration without the need of a specialized hardware.

List of Articles
210. Extrinsic Calibration of 2D Laser Sensors
Dong-Geol Choi, Yunsu Bok, Jun-sik Kim, In So Kweon
International Conference on Robotics & Automation (ICRA) 2014 / 05
209. Extrinsic Calibration of Non-overlapping Camera-Laser System using Structured Environment
Yunsu Bok, Dong-Geol Choi, Pascal Vasseur, In So Kweon
IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) 2014 / 09
208. GMM-based Saliency Aggregation for Calibration-free Gaze Estimation
Jinsoo Choi, Byungtae Ahn, Jaesik Park, In So Kweon
International Conference on Image Processing (ICIP) 2014 / 10
207. Cost-Aware Depth Map Estimation for Lytro Camera
Min Jung Kim, Tae-Hyun Oh, In So Kweon
International Conference on Image Processing (ICIP) 2014 / 10
206. Balanced Optical Flow Refinement by Bidirectional Constraint
Jongwon Choi, Hyeongwoo Kim, Tae-Hyun Oh, In So Kweon
International Conference on Image Processing (ICIP) 2014 / 10
205. Auto-adjusting Camera Exposure for Outdoor Robotics using Gradient Information
Inwook Shim, Joon-Young Lee, In So Kweon
IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) 2014 / 09
204. Color Transfer using Probabilistic Moving Least Squares
Youngbae Hwang, Joon-Young Lee, In So Kweon, Seon Joo Kim
IEEE International Conference on Computer Vision and Pattern Recognition (CVPR) 2014 / 06
203. Exploiting Shading Cues in Kinect IR Images for Geometry Refinement
Gyeongmin Choe, Jaesik Park, Yu-Wing Tai, In So Kweon
IEEE International Conference on Computer Vision and Pattern Recognition (CVPR) 2014 / 06
» Calibrating a non-isotropic near point light source using a plane
Jaesik Park, Sudipta N. Sinha, Yasuyuki Matsushita, Yu-Wing Tai, In So Kweon
IEEE International Conference on Computer Vision and Pattern Recognition (CVPR) 2014 / 06
201. PRISM: A System for Weighted Multi-Color Browsing of Fashion Products
Donggeun Yoo, Kyunghyun Paeng, Sunggyun Park, Jungin Lee, Seungwook Paek, Sung-Eui Yoon, In So Kweon
International World Wide Web Conference (WWW) Companion 2014 / 04
200. Noise aware depth denoising for a time-of-flight camera
Jiyoung Jung, Joon-Young Lee, In So Kweon
20th Korea-Japan Joint Workshop on Frontiers of Computer Vision 2014 / 02
199. Robust Computer Vision Techniques for High-quality 3D Modeling
Joon-Young Lee, Jiyoung Jung, Yunsu Bok, Jaesik Park, Dong-Geol Choi, Yudeog Han, In So Kweon
IAPR Asian Conference on Pattern Recognition 2013 / 11
198. Orientation based multi-scale corner detection for mobile robot application
Sungho Kim, In So Kweon, Wangheon Lee
International Conference on Control, Automation and Systems 2012 / 10
197. Appearance-based Gaze Estimation using Kinect
Jinsoo Choi, Byungtae Ahn, Jaesik Park, In So Kweon
The 10th International Conference on Ubiquitous Robots and Ambient Intelligence (URAI 2013) 2013 / 10
196. Haze Removal on Superpixel Domain
Sang-Woo Noh, Byungtae Ahn, In So Kweon
The 10th International Conference on Ubiquitous Robots and Ambient Intelligence (URAI) 2013 / 10
195. Partial Sum Minimization of Singular Values in RPCA for Low-Level Vision
Tae-Hyun Oh, Hyeongwoo Kim, Yu-Wing Tai, Jean-Charles Bazin, In So Kweon
IEEE International Conference on Computer Vision (ICCV) 2013 / 12
194. High Quality Shape from a Single RGB-D Image under Uncalibrated Natural Illumination
Yudeog Han, Joon-Young Lee, In So Kweon
IEEE International Conference on Computer Vision (ICCV) 2013 / 12
193. Multiview Photometric Stereo using Planar Mesh Parameterization
Jaesik Park, Sudipta N. Sinha, Yasuyuki Matsushita, Yu-Wing Tai, In So Kweon
IEEE International Conference on Computer Vision (ICCV) 2013 / 12
192. Fluttering Pattern Generation using Modified Legendre Sequence for Coded Exposure Imaging
Hae-Gon Jeon, Joon-Young Lee, Yudeog Han, Seon Joo Kim, In So Kweon
IEEE International Conference on Computer Vision (ICCV) 2013 / 12
191. Evaluation of Vocabulary Trees for Localization in Robot Applications
Soonmin Hwang, Chaehoon Park, Yukyung Choi, Donggeun Yoo, In So Kweon
International Conference on Control, Automation and Systems 2013 / 10
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