公开(公告)号：US10157497B2

公开(公告)日：2018-12-18

申请号：US15493552

申请日：2017-04-21

Applicant: Utah State University Research Foundation

Inventor： Taylor C. Bybee ,  Scott E. Budge

IPC: G06T17/05 ,  G06T7/80 ,  G06T7/33 ,  G06T15/04 ,  G01S17/88

Abstract: For textured digital elevation model generation, a method projects swath point projection coordinates of each lidar point of texel swaths into a corresponding texel swath with normalized projection coordinates. Each texel swath includes lidar points, an optical image, and swath output projection point coordinates of the lidar points into the optical image. The method generates a projection matrix including lidar point data for each lidar point of each texel swath. The method calculates enhanced lidar coordinates for each lidar point as a function of minimizing misregistration errors. In addition, the method creates enhanced output pixel coordinates for each image pixel based on the enhanced lidar coordinates for the lidar points and the associated output pixel coordinates. The method generates a textured digital elevation model based on the enhanced output pixel coordinates for each image pixel, and the enhanced lidar coordinates.

公开(公告)号：US20170309066A1

公开(公告)日：2017-10-26

申请号：US15493552

申请日：2017-04-21

Applicant: Utah State University Research Foundation

Inventor： Taylor C. Bybee ,  Scott E. Budge

IPC: G06T17/05 ,  G06T7/33 ,  G06T7/80 ,  G06T15/04

CPC classification number: G06T17/05 ,  G06T7/337 ,  G06T7/80 ,  G06T15/04 ,  G06T2207/10028 ,  G06T2207/10032

Abstract: For textured digital elevation model generation, a method projects swath point projection coordinates of each lidar point of texel swaths into a corresponding texel swath with normalized projection coordinates. Each texel swath includes lidar points, an optical image, and swath output projection point coordinates of the lidar points into the optical image. The method generates a projection matrix including lidar point data for each lidar point of each texel swath. The method calculates enhanced lidar coordinates for each lidar point as a function of minimizing misregistration errors. In addition, the method creates enhanced output pixel coordinates for each image pixel based on the enhanced lidar coordinates for the lidar points and the associated output pixel coordinates. The method generates a textured digital elevation model based on the enhanced output pixel coordinates for each image pixel, and the enhanced lidar coordinates.