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- Gaku Nakano
- ECCV
- 2016

- Gaku Nakano, Itaru Kitahara, Yuichi Ohta
- ISMAR
- 2008

Even though shadows are important for photometric consistency in Mixed Reality (MR) [1]. When human cannot perceive the inconsistency of artificial shadows which are not physically correct, they are acceptable as “perceptually-correct” shadows. This paper focuses on the simplification of light source models for generating the perceptually-correct artificial… (More)

- Gaku Nakano
- BMVC
- 2015

The perspective-n-point (PnP) problem, which estimates 3D rotation and translation of a calibrated camera from n pairs of known 3D points and corresponding 2D image points, is a classical problem but still fundamental in the computer vision community. It is well studied that the PnP problem can be solved by at least three points [1]. If n ≥ 4, the PnP… (More)

- Subhajit Chaudhury, Gaku Nakano, Jun Takada, Akihiko Iketani
- 2017 IEEE Winter Conference on Applications of…
- 2017

Crack development in concrete structures starts at the micro-crack stage and proceeds to the macro-crack stage due to repeated cyclic loading, like ongoing vehicles on bridges. Automatic detection of early stage cracks is required for both safety and economic reasons. We present an automatic crack detection method that scans a captured concrete area and… (More)

- Gaku Nakano
- 2015

This paper proposes a globally optimal direct least squares (DLS) method for the PnP problem with Cayley parameterization. First we derive a new optimality condition without Lagrange multipliers, which is independent of any rotation representations. Then, we show that the new equation can be solved by several types of parameterizations and among them,… (More)

- Gaku Nakano, Jun Takada
- VISAPP
- 2013

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