CAJ | 학술논문

介绍了一种新颖的从单张树木图片中提取树木的L-system规则的算法,并将其应用于三维树木建模.用户首先在图片上勾画出树木的主要可见枝干和树冠轮廓,通过图像处理的方法识别出树木的可见枝干的二维骨架;然后依据树木枝干的分布规律对骨架进行三维重建,并抽取其L-system生长规则和几何参数.所得L-system规则在树冠轮廓的约束下,经过迭代生长可以重建树木的分支结构.实验证明,相比以往的规则提取方法,该方法在保持模型质量的前提下,成本更低,方法更加简便.
개소료일충신영적종단장수목도편중제취수목적L-system규칙적산법,병장기응용우삼유수목건모.용호수선재도편상구화출수목적주요가견지간화수관륜곽,통과도상처리적방법식별출수목적가견지간적이유골가;연후의거수목지간적분포규률대골가진행삼유중건,병추취기L-system생장규칙화궤하삼수.소득L-system규칙재수관륜곽적약속하,경과질대생장가이중건수목적분지결구.실험증명,상비이왕적규칙제취방법,해방법재보지모형질량적전제하,성본경저,방법경가간편.
This paper proposes a novel method for extracting L-system of trees from a single image, which is applied in modeling 3D trees. Firstly, the user sketches the visible trunk and crown of the tree, and recognizes the 2D skeletons of visible branches through image processing. Then, the 3D skeletons can be reconstructed according to the distribution laws of branches, from which a set of L-system rules and geometric parameters will be extracted. And the other invisible branch structures will be recovered by an iterative growth of L-system rules with the constraint of the silhouette. The proposed method, according to the experiments, turns out to be in lower cost and easier with main-taining the model quality compared with previous methods for extracting rules.