Quantitative evaluation of irregular sampling methods

不规则抽样方法的定量评价

• 批准号: 261967493
• 负责人: Professor Dr. Oliver Deussen
• 金额: --
• 依托单位: Arbeitsgruppe Visual Computing
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/261967493?language=en
• 关键词: Quantitative; evaluation; irregular; sampling; methods

One of the big challenges of computer graphics and especially of computer-generated imagery is the construction of appropriate sampling patterns. Such patterns should suppress Moiré-Patterns but should also reduce the generated noise that is inherent to the sampling process. One possibility is to change the frequency spectrum of the noise so that the human observer does not notify it anymore. Such noise is called Blue Noise and is characterized by suppressing low frequencies below a prominent medium frequency.In the project we will extend sampling methods that have been developed by the applicant and his group in the last years. We want to deepen the theoretical understanding of such methods, but also develop practical methods for image synthesis. A particular useful method allows automatic judgement about the realizability of a spectrum, this method also enables the user to produce new forms of sampling patterns with desired frequency properties. We want to extend this method within the project.

计算机图形学，尤其是计算机生成的图像的一大挑战是构建合适的采样模式。这样的图案应该抑制莫尔图案，但也应该减少采样过程中固有的产生的噪声。一种可能性是改变噪声的频谱，这样人类观察者就不会再通知它。这种噪声被称为蓝色噪声，其特征是将低频抑制在显著的中频以下。在该项目中，我们将扩展申请人和他的团队在过去几年中开发的采样方法。我们希望加深对这类方法的理论理解，同时也开发出实用的图像合成方法。一种特别有用的方法允许自动判断频谱的可实现性，该方法还使用户能够产生具有所需频率特性的新形式的采样图案。我们希望在项目中扩展此方法。

项目成果

An adaptive point sampler on a regular lattice

规则格子上的自适应点采样器

• DOI: 10.1145/3072959.3073588
• 发表时间: 2017-07
• 期刊: ACM Trans. Graph
• 作者: ABDALLA G. M. AHMED;Till Niese;Hui Huang;Oliver Deussen
• 通讯作者: Oliver Deussen

Low-Discrepancy Blue Noise Sampling

低差异蓝色噪声采样

• DOI: 10.1145/2980179.2980218
• 发表时间: 2016-11-01
• 期刊: ACM TRANSACTIONS ON GRAPHICS
• 影响因子: 6.2
• 作者: Ahmed, Abdalla G. M.;Perrier, Helene;Deussen, Oliver
• 通讯作者: Deussen, Oliver

AA patterns for point sets with controlled spectral properties

• DOI: 10.1145/2816795.2818139
• 发表时间: 2015-10
• 期刊: ACM Transactions on Graphics (TOG)
• 作者: Abdalla G. M. Ahmed;Hui Huang;O. Deussen

A Simple Push-Pull Algorithm for Blue-Noise Sampling

一种简单的蓝噪声采样推挽算法

• DOI: 10.1109/tvcg.2016.2641963
• 发表时间: 2017-12-01
• 期刊: IEEE TRANSACTIONS ON VISUALIZATION AND COMPUTER GRAPHICS
• 影响因子: 5.2
• 作者: Ahmed, Abdalla G. M.;Guo, Jianwei;Deussen, Oliver
• 通讯作者: Deussen, Oliver