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几何模型技术在三维水墨动漫场景中的应用研究
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作者 贾丹丹 《信息与电脑》 2022年第23期71-73,共3页
几何模型技术在动漫制作中占据极为重要的地位,为进一步提高水墨动漫场景的图画质量,基于几何模型技术设计了三维水墨动漫场景设计方法。通过选择模型基准点计算平均曲率,得到均方根曲率值,再根据均方根曲率值与设定阈值的关系,判定某... 几何模型技术在动漫制作中占据极为重要的地位,为进一步提高水墨动漫场景的图画质量,基于几何模型技术设计了三维水墨动漫场景设计方法。通过选择模型基准点计算平均曲率,得到均方根曲率值,再根据均方根曲率值与设定阈值的关系,判定某点是否能够作为模型基准点。建立动漫场景典型空间坐标系,获取三维点云模型空间原点的位置,计算欧氏距离,获取坐标转化规律。设计基于三维点云模型的场景构造算法,得到动漫场景构造设计方法。验证实验结果显示,在6个场景图像中,设计方法的信噪比(Signal-to-Noise Ratio,SNR)值高于50 dB,画面质量较好。在鲁棒性测试中,设计方法在不同攻击指标下的客观参数值较低。由此可见,通过设计方法可以得到图像效果较好的三维水墨动漫场景。 展开更多
关键词 几何模型技术 三维场景 水墨动漫 应用研究 视觉质量
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An XML-based information model for archaeological pottery
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作者 刘德智 RAZDAN Anshuman +1 位作者 SIMON Arleyn BAE Myungsoo 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2005年第5期447-453,共7页
An information model is defined to support sharing scientific information on Web for archaeological pottery. Apart from non-shape information, such as age, material, etc., the model also consists of shape information ... An information model is defined to support sharing scientific information on Web for archaeological pottery. Apart from non-shape information, such as age, material, etc., the model also consists of shape information and shape feature information. Shape information is collected by Lasers Scanner and geometric modelling techniques. Feature information is generated from shape information via feature extracting techniques. The model is used in an integrated storage, archival, and sketch-based query and retrieval system for 3D objects, native American ceramic vessels. A novel aspect of the information model is that it is totally implemented with XML, and is designed for Web-based visual query and storage application. 展开更多
关键词 Geometric modelling Feature extraction XML Content-based 3D search
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