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Decomposition of 32 bpp into 16 bpp textures with alpha

Authors:

Nobuki Yoda,

Takeo IgarashiAuthors Info & Claims

SIGGRAPH '15: ACM SIGGRAPH 2015 Posters

Article No.: 33, Page 1

https://doi.org/10.1145/2787626.2792610

Published: 31 July 2015 Publication History

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Abstract

In 2D game graphics, textures are packed into a single texture called a sprite sheet in order to achieve efficient rendering. The sprite sheet can be compressed to save memory by using various compression methods such as block-based compressions and 16 bpp (bits per pixel) tone reduction. These methods are not without some problems, though. Block-based compressions are GPU-dependent, and high-quality compressions such as ASTC [Nystad et al. 2012] are often unavailable on mobile devices. 16 bpp tone reduction--often used with dithering--can create undesirable noise when it is scaled up (Figure 1c).

References

[1]

Nystad, J., Lassen, A., Pomianowski, A., Ellis, S., and Olson, T. 2012. Adaptive scalable texture compression. In Proc. EGGH-HPG'12, 105--114.

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[2]

Wallace, B. 1981. Merging and transformation of raster images for cartoon animation. In Proc. SIGGRAPH '81, 253--262.

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Index Terms

Decomposition of 32 bpp into 16 bpp textures with alpha
1. Computing methodologies
  1. Computer graphics
    1. Image manipulation
      1. Texturing

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Published In

SIGGRAPH '15: ACM SIGGRAPH 2015 Posters

July 2015

95 pages

ISBN:9781450336321

DOI:10.1145/2787626

Permission to make digital or hard copies of part or all of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for third-party components of this work must be honored. For all other uses, contact the Owner/Author.

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Association for Computing Machinery

New York, NY, United States

Publication History

Published: 31 July 2015

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SIGGRAPH '15: Special Interest Group on Computer Graphics and Interactive Techniques Conference

August 9 - 13, 2015

California, Los Angeles

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Overall Acceptance Rate 1,822 of 8,601 submissions, 21%

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