Sub-Pixel Anti-Aliasing Via Triangle-Based Geometry Reconstruction
| dc.contributor.author | Du, Wenjun | en_US |
| dc.contributor.author | Feng, Jieqing | en_US |
| dc.contributor.author | Yang, Baoguang | en_US |
| dc.contributor.editor | J. Keyser, Y. J. Kim, and P. Wonka | en_US |
| dc.date.accessioned | 2015-03-03T12:50:59Z | |
| dc.date.available | 2015-03-03T12:50:59Z | |
| dc.date.issued | 2014 | en_US |
| dc.description.abstract | Anti-aliasing has recently been employed as a post-processing step to adapt to the deferred shading technique in real-time applications. Some of these existing algorithms store supersampling geometric information as geometric buffer (G-buffer) to detect and alleviate sub-pixel-level aliasing artifacts. However, the anti-aliasing filter based on sampled sub-pixel geometries only may introduce unfaithful shading information to the sub-pixel color in uniform-geometry regions, and large G-buffer will increase memory storage and fetch overheads. In this paper, we present a new Triangle-based Geometry Anti-Aliasing (TGAA) algorithm, to address these problems. The coverage triangle of each screen pixel is accessed, and then, the coverage information between the triangle and neighboring sub-pixels is stored in a screen-resolution bitmask, which allows the geometric information to be stored and accessed in an inexpensive manner. Using triangle-based geometry, TGAA can exclude irrelevant neighboring shading samples and achieve faithful anti-aliasing filtering. In addition, a morphological method of estimating the geometric edges in high-frequency geometry is incorporated into the TGAA's anti-aliasing filter to complement the algorithm. The implementation results demonstrate that the algorithm is efficient and scalable for generating high-quality anti-aliased images. | en_US |
| dc.description.seriesinformation | Computer Graphics Forum | en_US |
| dc.identifier.doi | 10.1111/cgf.12476 | en_US |
| dc.identifier.issn | 1467-8659 | en_US |
| dc.identifier.uri | https://doi.org/10.1111/cgf.12476 | en_US |
| dc.publisher | The Eurographics Association and John Wiley and Sons Ltd. | en_US |
| dc.title | Sub-Pixel Anti-Aliasing Via Triangle-Based Geometry Reconstruction | en_US |