DCT approximations based on Chen’s factorization
作者：
Highlights：
•
• We propose two 8-point multiplication-free DCT approximations.
• We consider a scaled algorithm to propose 16- and 32-point low complexity transforms.
• We measure the quality of the proposed transforms compared with competing methods.
• Still JPEG-like image and video compression experiments were performed.
• Introduced transforms were embedded into an HEVC reference software.
摘要
•We propose two 8-point multiplication-free DCT approximations.•We consider a scaled algorithm to propose 16- and 32-point low complexity transforms.•We measure the quality of the proposed transforms compared with competing methods.•Still JPEG-like image and video compression experiments were performed.•Introduced transforms were embedded into an HEVC reference software.
论文关键词：Approximate DCT,Chen’s factorization,Fast algorithms,Image and video compression,Low-complexity transforms
论文评审过程：Received 15 June 2016, Revised 8 November 2016, Accepted 27 June 2017, Available online 4 July 2017, Version of Record 14 July 2017.
论文官网地址：https://doi.org/10.1016/j.image.2017.06.014
