|
|
Image anti-aliasing techniques for Internet visual media processing: a review |
Xu-dong Jiang, Bin Sheng, Wei-yao Lin, Wei Lu, Li-zhuang Ma |
Department of Computer Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; State Key Laboratory of Computer Science, Institute of Software, Chinese Academy of Sciences, Beijing 100190, China; Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Autodesk Software (China) Co., Ltd. Shanghai Branch, Shanghai 200122, China |
|
|
Abstract Anti-aliasing is a well-established technique in computer graphics that reduces the blocky or stair-wise appearance of pixels. This paper provides a comprehensive overview of the anti-aliasing techniques used in computer graphics, which can be classified into two categories: post-filtering based anti-aliasing and pre-filtering based anti-aliasing. We discuss post-filtering based anti-aliasing algorithms through classifying them into hardware anti-aliasing techniques and post-process techniques for deferred rendering. Comparisons are made among different methods to illustrate the strengths and weaknesses of every category. We also review the utilization of anti-aliasing techniques from the first category in different graphic processing units, i.e., different NVIDIA and AMD series. This review provides a guide that should allow researchers to position their work in this important research area, and new research problems are identified.
|
Received: 18 March 2014
Published: 06 September 2014
|
|
网络可视媒体处理中的图像反锯齿技术:回顾与展望
研究目的:通过调查不同反锯齿技术的实现方法和优缺点,为研究人员提供一种快速理解反锯齿技术的方法,并指出该领域未来研究方向。 \n文章内容:将图像反锯齿技术分为后滤波和预滤波两大类,并将后滤波技术细分为硬件反锯齿技术和后处理反锯齿技术(图1)。针对每一类技术,分析了主流反锯齿技术的实现原理和主要优缺点。在讨论每一类技术的最后,将这些技术作了归纳和比较,并阐述其应用。对后滤波技术,首先讨论了基于GPU管线的SSAA、MSAA及其不同的改进技术,接着分析了为适应延迟渲染技术而出现的独立于GPU管线的各种后处理滤波技术(以形态反锯齿技术为代表),最后从不同方面比较了主流后滤波技术间的差异(表1)。对于预滤波技术,主要依据时间发展脉络讨论了不同的解析反锯齿技术。最后,从反锯齿质量、性能、输入限制、带宽需求等方面对这两大类技术作了比较(表2),指出了未来研究方向。
关键词:
反锯齿,
硬件,
后滤波,
预滤波,
采样
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
|
Shared |
|
|
|
|
|
Discussed |
|
|
|
|