Fast integer cosine transform of order-8 for high-speed video coding

V. K. Luts

doi:10.1117/12.3035188

30 September 2024 Fast integer cosine transform of order-8 for high-speed video coding

V. K. Luts

Proceedings Volume 13137, Applications of Digital Image Processing XLVII; 1313716 (2024) https://doi.org/10.1117/12.3035188
Event: Optical Engineering + Applications, 2024, San Diego, California, United States

Abstract

An integer cosine transforms of order -4 and -8 with fast algorithms has been constructed. The proposed transforms is orthogonal, maintains a one-norm, with the normalization error not exceeding 0.23%, and very close to DCT type II. A new quantization approach is proposed, using adaptive parameters that depend on the norm of the transform. The proposed integer cosine transform of order-8 for adaptive quantization parameters is 25% faster than the well-known algorithm from H.265, taking into account the computational complexity of quantization and normalization.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

V. K. Luts "Fast integer cosine transform of order-8 for high-speed video coding", Proc. SPIE 13137, Applications of Digital Image Processing XLVII, 1313716 (30 September 2024); https://doi.org/10.1117/12.3035188

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