【摘 要】
:
3D modeling of trees in real environments is a challenge in computer graphics and computer vision, since the geometric shape and topological structure of trees
【机 构】
:
Sino-French Laboratory LIAMA,National Laboratory of Pattern Recognition,Digital Technology Center
【基金项目】
:
北京市自然科学基金;国家高技术研究发展计划(863计划);国家自然科学基金
论文部分内容阅读
3D modeling of trees in real environments is a challenge in computer graphics and computer vision, since the geometric shape and topological structure of trees are more complex than conventional artificial objects. In this paper, we present a multi-process approach that is mainly performed in 2D space to faithfully construct a 3D model of the trunk and main branches of a real tree from a single range image. The range image is first segmented into patches by jump edge detection based on depth discontinuity. Coarse skeleton points and initial radii are then computed from the contour of each patch. Axis directions are estimated using cylinder fitting in the neighborhood of each coarse skeleton point. With the help of axis directions, skeleton nodes and corresponding radii are computed. Finally, these skeleton nodes are hierarchically connected, and improper radii are modified based on plant knowledge. 3D models generated from single range images of real trees demonstrate the effectiveness of our method. The main contributions of this paper are simple reconstruction by virtue of image storage order of single scan and skeleton computation based on axis directions.
其他文献
Elastic scattering properties of the ultracold interaction for the triplet state of 133Cs and 85Rb atoms are studied using two kinds of potentials by the same p
A series of carboxylic acids was esterified to the corresponding esters with TiCl4 as catalyst at room temperature,in high yields. This catalyst was highly effe
This paper presents a novel approach for human identification at a distance using gait recognition.Recog- nition of a person from their gait is a biometric of increasing interest.The proposed work int
A phosphrous-containing poly(aryl ether ketone) was synthesized derived from bisphenol-A and bis[4-(4-fluorobenzoyl)phenyl] phenyl phosphine oxide (FPPPO) by nu
In this paper, the authors investigate the synchronization of an array of linearly coupled identical dynamical systems with a delayed coupling. Here the couplin
Fiducial marker based Augmented Reality has many applications. So far the inner pattern of the fiducial marker is always used to encode the markers. Thus a larg
We propose a scheme for teleportation of four-level atomic states in thermal cavities. The scheme does not involve the generalized Bell-state or generalized GHZ
cis-1,2-Disubstituted cyclododecanes 2 were synthesized by sodium borohydride reduction of 2-monosubstituted cyclododecanones and their structures were confirme
在分析低散热柴油机燃烧过程特点的基础上,建立了一个准维三区燃烧模型,喷油规律的计算进行了简化处理,考虑高温喷雾燃烧区和产物区的辐射传热,对低散热柴油机在不同隔热条件
We study the symmetries of a (2+1)-dimensional generalized Broer-Kaup system by means of the classical Lie group theory. The corresponding group algebra is cons