一种后处理式的改进抗锯齿算法

计算机科学 ›› 2018, Vol. 45 ›› Issue (11A): 218-221.

一种后处理式的改进抗锯齿算法

邵鹏¹, 周伟¹, 李光泉¹, 吴志健²

江西农业大学计算机与信息工程学院南昌330045¹
武汉大学计算机学院武汉430072²

出版日期:2019-02-26 发布日期:2019-02-26
通讯作者: 邵鹏(1983-),男,博士,讲师,主要研究方向为智能计算、图像处理,E-mail:sp198310@163.com
作者简介:周伟(1998-),男,主要研究方向为图像处理。
基金资助:
本文受国家自然科学基金(70971043,61763019),江西省教育厅科技项目(GJJ160409,GJJ161076)资助。

Improved Anti-aliasing Algorithm Based on Deferred Shading

SHAO Peng¹, ZHOU Wei¹, LI Guang-quan¹, WU Zhi-jian²

School of Computer and Information Engineering,Jiangxi Agricultural University,Nanchang 330045,China¹
School of Computer,Wuhan University,Wuhan 430072,China²

Online:2019-02-26 Published:2019-02-26

摘要/Abstract

摘要： FXAA算法是一种后处理式的抗锯齿算法,由于它是基于图像像素的边缘检测算法,在很多情况下边缘检测的不准确会造成许多不必要的抗锯齿计算,导致图像过度模糊。为了提高抗锯齿的性能,提出了一种基于FXAA算法的改进抗锯齿算法(IAAFXAA)。该算法将相对视点的深度和法线保存到纹理中,当使用深度和法线信息时从G-buffer中提取。该算法能利用深度、法线信息进行较为精确的边缘检测。大量的实验结果与分析表明,该算法在保证抗锯齿效果的同时,能更加精确地确定抗锯齿区域,生成高质量的边界,避免图像的过度模糊,提升图像质量。

关键词: G-Buffer, 边缘检测, 抗锯齿, 延迟渲染

Abstract: FXAA is a post-processing anti-aliasing algorithm.Because it is an edge detection algorithm based on image pixel,it causes a lot of unnecessary anti-aliasing computation.In order to improve the performance of anti-aliasing,an improved anti-aliasing algorithm based on FXAA (IAAFXAA) was proposed.The depth and normal of the relative view are saved into the texture.The algorithm extracts depth and normal information from G-buffer,and uses depth and normal information to perform more accurate edge detection.A large number of experimental results and analysis show that while ensuring the good anti-aliasing effect,the proposed algorithm can determine the anti-aliasing region more accurately to generate high-quality boundaries,and avoid excessive blurring of images to improve image quality.

Key words: Anti-aliasing, Deferred rendering, Edge detection, G-Buffer

中图分类号:

TP301

邵鹏, 周伟, 李光泉, 吴志健. 一种后处理式的改进抗锯齿算法[J]. 计算机科学, 2018, 45(11A): 218-221. https://doi.org/

SHAO Peng, ZHOU Wei, LI Guang-quan, WU Zhi-jian. Improved Anti-aliasing Algorithm Based on Deferred Shading[J]. Computer Science, 2018, 45(11A): 218-221. https://doi.org/

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