ITE Transactions on Media Technology and Applications
Online ISSN : 2186-7364
ISSN-L : 2186-7364
Special Section on 3D Imaging Technologies and Their Applications
[Paper] Compressive Inverse Light Transport for Radiometric Compensation in Projection-based Displays
Isao MiyagawaTetsuya Kinebuchi
Author information
JOURNAL FREE ACCESS

2017 Volume 5 Issue 3 Pages 96-109

Details
Abstract

We propose a new method that obtains an inverse light transport matrix suitable for radiometric compensation; it creates seamless projection-based displays on unknown 3D structures. We extend the theory of inverse light transport to support uncalibrated projector-camera systems in which the optical axes of the projector and the camera are not aligned. The inverse light transport matrix consists of the inverse matrices of direct light transport matrix and inter-reflection matrix. Given that direct and inter-reflection matrices are separated from the light transport matrix, the inverse inter-reflection matrix is computed by Neumann inverse series. The proposed method introduces compressed sensing to optimally estimate the inverse direct light transport matrix from the sets of projector illumination patterns and the camera responses from which the global components are canceled by the inverse inter-reflection matrix. We visualize the matrix elements of the various light transport matrices generated by our approach to examine its performance. We demonstrate compensation trials that compare the proposed method with existing methods. Our experiments confirm that our method offers excellent projection-based displays on 3D objects.

Content from these authors
© 2017 The Institute of Image Information and Television Engineers
Previous article Next article
feedback
Top