H-ETC2: Design of a CPU-GPU Hybrid ETC2 Encoder

Lee, Hyeon-ki; Nah, Jae-Ho

H-ETC2: Design of a CPU-GPU Hybrid ETC2 Encoder

Files

v42i7_41_14969.pdf (12.27 MB)

Date

2023

Authors

Lee, Hyeon-ki
Nah, Jae-Ho

Publisher

The Eurographics Association and John Wiley & Sons Ltd.

Abstract

This paper proposes a novel CPU-GPU hybrid encoding method based on the ETC2 format, commonly used on mobile platforms. Traditional texture compression techniques often face a trade-off between encoding speed and quality. For a better trade-off, our approach utilizes both the CPU and GPU. In a pipeline we designed, the CPU encoder identifies problematic pixel blocks during the encoding process, and the GPU encoder re-encodes them. Additionally, we carefully improve the base CPU and GPU encoders regarding encoding speed and quality. As a result, our encoder minimizes compression artifacts, increases encoding speed, or achieves both of these goals compared to previous high-quality offline ETC2 encoders.

CCS Concepts: Computing methodologies -> Image compression

        @article{10.1111:cgf.14969
,
journal = {Computer Graphics Forum},
title = {{H-ETC2: Design of a CPU-GPU Hybrid ETC2 Encoder
}},
author = {Lee, Hyeon-ki and 
Nah, Jae-Ho
},
year = {2023
},
publisher = {The Eurographics Association and John Wiley & Sons Ltd.
},
ISSN = {1467-8659
},
DOI = {10.1111/cgf.14969
}
}