Paper
8 October 2007 A full 2D IDCT with extreme low complexity
Author Affiliations +
Abstract
In the context of a Call for Proposal for integer IDCTs issued by MPEG in July 2005, a full 2D integer IDCT based on a previous Feig and Winograd's work has been proposed. It achieves a high precision by meeting all IEEE1180 conditions and is suitable of implementation on hardware since it can be performed only with shifts and additions. Furthermore, it can be useful in high video resolution scenarios like in 720p/1080i/p due to its feedforward operation mode without any loop as usual in row-column implementations. The proposed transformation can be implemented without changing other functional blocks either at the encoder or at the decoder or alternatively as a scaled version incorporating the scaling factors into the dequantization stage. Our algorithm uses only 1328 operations for 8x8 blocks, including scaling factors.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Antonio Navarro, Antonio Silva, and Yuriy Reznik "A full 2D IDCT with extreme low complexity", Proc. SPIE 6696, Applications of Digital Image Processing XXX, 669618 (8 October 2007); https://doi.org/10.1117/12.740234
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KEYWORDS
Video

Computer programming

Quantization

Algorithm development

Direct methods

Matrices

Silicon

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