Mr. Jianxin Xu Profile

Jianxin Xu

at Jiangsu Provincial Bureau of Surveying and Mapping

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Proceedings Article | 19 July 2013 Paper

Study of texture stitching in 3D modeling of lidar point cloud based on per-pixel linear interpolation along loop line buffer

Jianxin Xu, Hong Liang

Proceedings Volume 8878, 88780N (2013) https://doi.org/10.1117/12.2030933

KEYWORDS: 3D modeling, Clouds, LIDAR, Volume rendering, Tin, Laser scanners, 3D image processing, Algorithm development, Radium, RGB color model

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Terrestrial laser scanning creates a point cloud composed of thousands or millions of 3D points. Through pre-processing, generating TINs, mapping texture, a 3D model of a real object is obtained. When the object is too large, the object is separated into some parts. This paper mainly focuses on problem of gray uneven of two adjacent textures’ intersection. The new algorithm is presented in the paper, which is per-pixel linear interpolation along loop line buffer .The experiment data derives from point cloud of stone lion which is situated in front of west gate of Henan Polytechnic University. The model flow is composed of three parts. First, the large object is separated into two parts, and then each part is modeled, finally the whole 3D model of the stone lion is composed of two part models. When the two part models are combined, there is an obvious fissure line in the overlapping section of two adjacent textures for the two models. Some researchers decrease brightness value of all pixels for two adjacent textures by some algorithms. However, some algorithms are effect and the fissure line still exists. Gray uneven of two adjacent textures is dealt by the algorithm in the paper. The fissure line in overlapping section textures is eliminated. The gray transition in overlapping section become more smoothly.

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