Image-based Tree Shadow Morphing Technique (グラフィクスとCAD 研究報告夏の集中研究集会「インターネット時代のCGとCAD」)

概要

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Image-based tree shadow generation means transforming one shadow image into another, and at the same time ensuring the middle images look as realistic and reasonable as possible. The method proposed in this paper employs the abstract geometry model of trees to define the key points of shadows and then uses them as correspondence features. Different from traditional morphing techniques, the key points of new shadows are not determined just by interpolation of the source features and target features, but are calculated on considerng the influence of the sun. movement. Line segments connected the key points sequentially are used as multiple line pairs and then use the field morphing ^[6] to establish the transformation. Finally, probability-based dissolved algorithm is proposed to deal with the mixing problem of the binary shadow images. The experiments show that using this method, the irregularity of tree shadows can be well dealt with and the rich detail of the shadows has also been preserved during the transforming process.
一般社団法人情報処理学会の論文
2000-09-07