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Seamless images stitching for 3D human models. | LitMetric

Seamless images stitching for 3D human models.

Springerplus

National Laboratory for Parallel and Distributed Processing, National University of Defense Technology, Changsha, China ; College of Computer, National University of Defense Technology, Changsha, China.

Published: October 2016

AI Article Synopsis

Article Abstract

Realistic 3D human model reconstruction is an important component in computer graphics and computer vision. In particular, texturing on the surface of models is a key stage of reconstruction. In this paper, we dispose the texture mapping on the model's surface as an optimization of image stitching, and present an effective method to generate a seamless, integrated and smooth texture on the surface of 3D human model. First, we build a corresponding Markov Random Field model with respect to color images and triangular meshes of the surface. On the basis of [Formula: see text]-expansion optimization for this Markov Random Field model, a 2D translation coordinate of color image, as an adaptive iterative factor, is introduced into the optimization to match the color content at the boundary of adjacent meshes. That compensates for the misalignment of adjacent color images, which caused by the inaccuracy of depth data and multi-view misregistration. Then we apply Poisson blending to a composite vector field in gradient domain, to resolve the small but noticeable illumination variations between different color images. To repair the blank regions, we parameterize the model's surface and project it onto a 2D plane. Then the K-Nearest Neighbor algorithm is applied to fill up the blank regions with texture contents. Finally, we evaluate our method by comparison with another three advanced methods on some human models, and the results demonstrate that our method of images stitching creates a best texture on the surface of 3D human model both in visual effect and quantitative analysis.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5056926PMC
http://dx.doi.org/10.1186/s40064-016-3447-zDOI Listing

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