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IEEE Transactions on Pattern Analysis and Machine Intelligence
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IEEE Transactions on Pattern Analysis and Machine Intelligence
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IEEE Transactions on Pattern Analysis and Machine Intelligence
A Flexible New Technique for Camera Calibration
IEEE Transactions on Pattern Analysis and Machine Intelligence
Multiple view geometry in computer vision
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Multiple Illuminant Direction Detection with Application to Image Synthesis
IEEE Transactions on Pattern Analysis and Machine Intelligence
Estimation of Illuminant Direction and Intensity of Multiple Light Sources
ECCV '02 Proceedings of the 7th European Conference on Computer Vision-Part IV
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Multiple-cue Illumination Estimation in Textured Scenes
ICCV '03 Proceedings of the Ninth IEEE International Conference on Computer Vision - Volume 2
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Camera Calibration and Light Source Estimation from Images with Shadows
CVPR '05 Proceedings of the 2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'05) - Volume 2 - Volume 02
Spatial Augmented Reality: Merging Real and Virtual Worlds
Spatial Augmented Reality: Merging Real and Virtual Worlds
Reconstruction in the Round Using Photometric Normals and Silhouettes.
CVPR '06 Proceedings of the 2006 IEEE Computer Society Conference on Computer Vision and Pattern Recognition - Volume 2
Estimation of multiple directional illuminants from a single image
Image and Vision Computing
Retrieving multiple light sources in the presence of specular reflections and texture
Computer Vision and Image Understanding
Recovering Light Directions and Camera Poses from a Single Sphere
ECCV '08 Proceedings of the 10th European Conference on Computer Vision: Part I
Computer Analysis of Lighting in Realist Master Art: Current Methods and Future Challenges
ICIAP '09 Proceedings of the 15th International Conference on Image Analysis and Processing
IJCAI'85 Proceedings of the 9th international joint conference on Artificial intelligence - Volume 2
Analytical forward projection for axial non-central dioptric and catadioptric cameras
ECCV'10 Proceedings of the 11th European conference on computer vision conference on Computer vision: Part III
Polygonal light source estimation
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Single Image Calibration of Multi-axial Imaging Systems
CVPR '13 Proceedings of the 2013 IEEE Conference on Computer Vision and Pattern Recognition
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This paper introduces a novel method for recovering light directions and camera parameters using a single sphere. Traditional methods for estimating light directions using spheres either assume both the radius and center of the sphere being known precisely, or they depend on multiple calibrated views to recover these parameters. In this paper, it will be shown that light directions can be uniquely determined from specular highlights observed in a single view of a sphere without knowing or recovering the exact radius and center of the sphere. Besides, given multiple views of the sphere, it will be shown that the focal length and the relative positions and orientations of the cameras can be determined using the recovered sphere and light directions. Closed form solutions for estimation of light directions and camera poses are presented, and an optimization procedure for estimation of the focal length is introduced. Experimental results on synthetic and real data demonstrates both the accuracy and robustness of the proposed method.