Hiroaki Date

Learn More
− The Mobile Laser Scanning (MLS) system can acquire point clouds of urban environments including roads, buildings, trees, lamp posts etc. and enables effective mapping of them. With the spread of the MLS system, the demands for the management of roads and facilities using MLS point clouds have increased. Especially, pole-like objects (PLOs) such as lamp(More)
To clarify the roles of Wnt pathway in medulloblastoma oncogenesis, immunohistochemical staining of beta-catenin and Wnt-1 and genomic analyses of CTNNB1 (beta-catenin) and AXIN1 (axin 1) were examined in 23 sporadic cases. Accumulation of beta-catenin in tumor cells was immunohistochemically proven in 5 cases; 2 cases showed positive immunoreactivity for(More)
In this paper, we propose a new mesh smoothing method for mesh models with measurement noise obtained from a 3D scanner. Our proposed method enables not only the removal of noise from the faces but the preservation and smoothing of features recognized as sharp edges and corners. First, by using the eigen analysis of normal voting tensor, mesh edges composed(More)
The majority of neural tube defects were believed to be folic acid (FA)-preventable in the 1990s. The Japanese government recommended women planning pregnancy to take FA supplements of 400 μg/d in 2000, but the incidence of spina bifida has not decreased. We aimed to evaluate the OR of having an infant with spina bifida for women who periconceptionally took(More)
OBJECT The natural history of asymptomatic spinal lipoma in infancy remains unclear, and the indication for the prophylactic untethering operation is still debatable. To address this question, a multicenter cooperative study for the treatment of spinal lipoma was performed by the 7 most active institutions in neurosurgical care for spina bifida in Japan(More)
In a 3D free-form CAM system, a series of intermediate shape models for machining are required as the references of NC programming. The safety and efficiency of the machining greatly depend on the geometric relation between these intermediate shape models. However current CAM systems lack the function of automatic generation of the appropriate series of(More)